FCC ID: NVRPSA41080-VHF Bi-Directional Amplifier

VHF Product Manual July 2018, Rev B VHF 1/4W Public Safety Signal Booster Users Guide P R O D U C T M A N U A L 5689 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 1 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B DISCLAIMER All information and statements contained herein are accurate to the best of Westell Technologies knowledge. Westell makes no warranty with respect there to, including without limitation any results that may be obtained from the products described herein or the infringement by such products of any property rights of any persons. Use or application of such information or statements is at the users sole risk, without any liability on the part of Westell. Nothing herein shall be construed as license or recommendation for use, which infringes upon any propriety rights of any person. Product material and specifications are subject to change without notice. Westell standard terms of sale and the specific terms of any particular sale apply. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 2 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Table of Contents PREFACE................................................................................................................................... 7 Purpose ............................................................................................................................................................. 7 Scope................................................................................................................................................................. 7 Audience ........................................................................................................................................................... 7 Document Organization ................................................................................................................................ 8 References ........................................................................................................................................................ 9 Document Conventions ................................................................................................................................. 9 Safety Notices ............................................................................................................................................... 10 Technical Support ......................................................................................................................................... 10 Acronyms and Abbreviations ..................................................................................................................... 10 Copyright and Trademark Acknowledgements ...................................................................................... 10 1 GENERAL INFORMATION ............................................................................................... 11 1.1 Document Purpose and Intended Users .......................................................................................... 11 1.2 Application ............................................................................................................................................. 11 1.2.1 Product Registration Information ........................................................................................................................ 11 1.3 Safety Guidelines .................................................................................................................................... 12 1.3.1 Important Safety Information ..................................................................................................................................... 13 1.4 FCC Part 90 Signal Boosters ................................................................................................................ 13 1.5 FCC Contact Information ...................................................................................................................... 15 2 PRODUCT OVERVIEW ...................................................................................................................... 16 2.1 Product Information .............................................................................................................................. 16 2.2 Product Features .................................................................................................................................... 17 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 3 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 2.3 Included Accessories............................................................................................................................. 17 2.4 Optional Accessories ............................................................................................................................. 19 3 PRODUCT SPECIFICATION .............................................................................................. 18 3.1 RF Specifications .................................................................................................................................... 18 3.2 Power Specification ............................................................................. Error! Bookmark not defined.18 3.3 Mechanical Specification .................................................................... Error! Bookmark not defined.18 4 PRODUCT APPEARANCE....................................... ERROR! BOOKMARK NOT DEFINED. 4.1 External Configuration ............................................................................ Error! Bookmark not defined. 5 INSTALLATION GUIDELINES ............................. ERROR! BOOKMARK NOT DEFINED.22 5.1 Important Installation Guidelines ..................................................... Error! Bookmark not defined.22 5.2 Donor Antenna Installation Guidelines ........................................... Error! Bookmark not defined.23 5.3 Indoor Antenna Installation Guidelines ........................................... Error! Bookmark not defined.23 5.4 Mounting the Signal Booster ............................................................ Error! Bookmark not defined.24 6 CONNECTING THE SIGNAL BOOSTER ........... ERROR! BOOKMARK NOT DEFINED.36 6.1 Connecting Step-By-Step .................................................................... Error! Bookmark not defined.36 7.0 SYSTEM OPERATION .................................................................................................... 38 8.0 STATUS INDICATORS.................................................................................................... 43 9.0 SOFTWARE ..................................................................................................................... 45 9.1 Introduction Error!

Bookmark not defined.45 9.2 Local SoftwareError!

Bookmark not defined.45 10.0 REMOTE WEB SERVER OPTION ................................................................... 51 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 4 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 10.1 Introduction Error!

Bookmark not defined.51 10.2 Webpage Description Error!

Bookmark not defined.52 11.0 RF PARAMETER DESCRIPTIONS .............................................................................. 62 12.0 SPECTRUM ANALYZER .............................................................................................. 70 13.0 SNMP AGENT .............................................................................................................. 73 14.0 SNMP TRAPS ............................................................................................................... 83 APPENDIX A IMPORTANT PRODUCT INFORMATION .............................................. 94 A.1 Registration Number............................................................................................................................. 94 A.2 UL .............................................................................................................................................................. 94 APPENDIX B ACRONYMS AND ABBREVIATIONS ...................................................... 95 2017 Westell Technologies 1.877.844.4274 WESTELL.COM July 2018; Doc No. VHF Signal Booster UM RA Page 5 of 95 VHF Product Manual July 2018, Rev B INTENTIONALLY BLANK 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 6 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Preface This Preface includes the following:

Purpose Scope Audience Document Organization References Document Conventions Safety Notices Technical Support Acronyms and Abbreviations Copyright and Trademark Acknowledgements Purpose This manual contains information and procedures for the operation of the Westell VHF Public Safety Signal Booster. Changes that occur after the publishing date may be incorporated by a complete manual revision or as additions. Scope Reference this manual when there is a need to add enhanced signal capability to a new or existing system, to monitor a system, make maintenance adjustments, or address alarms. Audience This manual is intended for installers and users who are familiar with similar types of equipment. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 7 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Document Organization This manual includes the following chapters:

Chapter 1: General Information Outlines the document purpose and intended users, application, product registration, safety guidelines, disclaimer and FCC Part 90, FCC Warning Labels. Chapter 2: Product Overview Provides product information, describes product features and lists accessories. Chapter 3: Product Specification Provides tables containing RF, power, mechanical and environmental specifications. Also provides information about GUI items, alarm status and alarm relay. Chapter 4: Product Appearance Provides physical specifications, photographs and information about the external and internal Signal Booster configuration. Chapter 5: Installation Guidelines Lists guidelines for installing the Signal Booster and antennas. Chapter 6: Connecting the Signal Booster Provides guidelines on connecting the signal booster to power, antennas, etc. Chapter 7: System Operation Describes product operation, including how to open the communication port and describes the functions in the Status and Control pages. Chapter 8: Status Indicators Outlines the LEDs status lights on the signal booster. Chapter 9: Software Installation Outlines the steps required to install the software. Chapter 10: Remote Web Server Option Outlines the steps required to connect remotely. Chapter 11: RF Parameters Outlines the signal boosters RF parameters in the GUI. Chapter 12: Spectrum Analyzer Outlines the steps required to use the imbedded spectrum analyzer. Chapter 13: SNMP Agent Outlines the steps required to use the SNMP Agent. Chapter 14: SNMP Traps Outlines the traps for the SNMP Agent. Appendix A: Important Product Information Provides the product registration number and internal power supply information. Appendix B: Acronyms and Abbreviations A table of acronyms and abbreviations and definitions for each. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 8 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B References References References References FCC Part 90 Document Conventions Document Conventions Document Conventions Document Conventions Table P-1 lists the conventions used throughout this document. Table P-1: Document Conventions Convention Description DANGER!

Description of an imminent hazard that, if not avoided, may result in severe personal injury or death. Before you work on equipment, be aware of the hazards involved with electrical and RF circuitry and be familiar with standard practices for preventing accidents. WARNING!

Description of an imminent hazard that, if not avoided, may result in personal injury or serious equipment damage. CAUTION Description of a conditions or practice that could cause damage to equipment or property. Communicates information that is crucial to preventing loss of data or damage to hardware or software, and actions that could result in equipment failure. IMPORTANT Additional important information that the user must be aware of, but is not related to a hazard. NOTE Bold Click Additional information that is beneficial for the user to know, but is not related to a hazard. Bold text indicates an action or provides emphasis. Instructs the user to press the primary (typically left) mouse button while the pointer is over the specified location. Right-click Instructs the user to press the secondary (typically right) mouse button while the pointer is over the specified location. Double-click Instructs the user to press the primary (typically left) mouse button twice, rapidly, while the pointer is over the specified location. Select Enter 2017 Westell Technologies 1.877.844.4274 Instructs the user to perform a selection on the screen by clicking an active object. Instructs the user to type text using the keyboard. July 2018; Doc No. VHF Signal Booster UM RA Page 9 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Indicates a level in a menu. For example, Start>Programs prompts the user to click on Start, then locate and click Programs under the Start menu.

>

Safety Notices Safety Notices Safety Notices Safety Notices This general safety information applies to both operating and service personnel. Specific warnings and cautions are located in other parts of this manual where they apply and may not appear in this summary. Failure to comply with these precautions or specific warnings elsewhere in the manual violates the safety standards of design, manufacture, and intended use of equipment. Westell assumes no liability for the customers or users failure to comply with these requirements:

Explosive atmospheres - To avoid explosion or fire, do not operate this product in the presence of flammable gases or fumes. Lightning danger - Do not install or make adjustments to this unit during an electrical storm. WARNING!

Changes and Modifications not expressly approved by Westell can void your authority to operate this equipment under Federal Communications Commissions rules. Technical Support Technical Support Technical Support Technical Support If you suspect a malfunction with this product or have a technical question, call your dealer or the Westell Support Line at: (603) 626-6677, Toll Free (USA) 1-877-844-4274, press option 2, and then option 1. Westell Support can also be reached via email at IBWsupport@westell.com. Acronyms and Abbreviations Acronyms and Abbreviations Acronyms and Abbreviations Acronyms and Abbreviations Refer to Appendix B for definitions of the acronyms and abbreviations used in this manual. Copyright and Trademark Acknowledgements Copyright and Trademark Acknowledgements Copyright and Trademark Acknowledgements Copyright and Trademark Acknowledgements The following products are referred to in this manual:

2017 Westell Technologies 1.877.844.4274 is a registered trademark of Westell Technologies, Inc. July 2018; Doc No. VHF Signal Booster UM RA Page 10 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 1 General Information 1.1 Document Purpose and Intended Users The purpose of this document is to provide a step-by-step procedure to help experienced technicians or engineers install and commission an in-building Passive Wireless Distributed Antenna System (DAS) using Westells VHF Public Safety Signal Booster. Follow the instructions in this guide to minimize risks associated with modifying a live system and preclude service interruptions. This document assumes the technician or engineer understands the basic principles and functionality involved with an RF Signal Booster and in-building wireless systems. This guide has been written to address the practical concerns of the installer. 1.2 Application Use this guide whenever there is a need to add enhanced signal capability to an existing system or when a Signal Booster is included in a new installation. 1.2.1 Product Registration Information The serial number is located on the label on the panel near the power connectors. Record this number in Figure 1-1. Retain this manual, along with proof of purchase, to serve as a permanent record of your purchase. Figure 1-1: Product Registration 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 11 of 95 WESTELL.COM 1.3 Safety Guidelines VHF Product Manual July 2018, Rev B The general safety information in this guideline applies to both operations and service personnel. Specific warnings and cautions are located in the applicable manual sections, but may not appear in this summary. Failure to comply with these precautions or specific warnings elsewhere in the manual violates safety standards of design, manufacture, and intended use of equipment. Westell assumes no liability for the customers failure to comply with these requirements:

Grounding: This Signal Booster is designed to operate at 110VAC or +24/-48VDC and must always be operated with the ground wire properly connected. Explosive atmospheres: To avoid explosion or fire, do not operate this product in the presence of flammable gases or fumes. Lightning danger: Do not install or adjust this unit during an electrical storm. No user-serviceable parts are inside the unit. Hazardous voltages are present when the cover is removed. Opening the chassis will void your warranty. If you suspect a malfunction with this product, call your dealer or Westells technical support line at 1.877.844.4274. CAUTION Turn the Signal Booster power off when connecting or disconnecting cables. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 12 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Important Safety Information 1.3.1 Antennas used for the purpose of radiating signals indoors are limited to a maximum gain of 10 dBi. Each antenna must be positioned to observe minimum separation requirements from all users and bystanders. The following guidelines must be used when considering separation distances:

Indoor antennas must be placed so that under normal conditions, personnel cannot come within 55 cm of any inside antenna. Adhering to this minimum separation will ensure that the employee or bystander cannot exceed RF exposures beyond the maximum permissible limit as defined by general population/uncontrolled exposure. FCC Regulations section 1.1310 Limits for Outdoor antenna must be positioned so that under normal conditions, personnel cannot approach closer than 55 cm. A directional antenna having a maximum gain of 10 dBi is used, and precautions should be taken to prevent personnel from routinely passing through the main radiation beam at a distance closer than specified. 1.4 FCC Part 90 Signal Boosters WARNING!

THIS IS A 90.219 CLASS B DEVICE This is not a consumer device. It is designed for installation by FCC licensees and qualified installers. You must have an FCC license or express consent of an FCC Licensee to operate this device. You must register class B signal boosters (as defined in 47 CFR 90.219) online at www.fcc.gov/signal-boosters/registration. Unauthorized use may result in significant forfeiture penalties, including penalties in excess of $100,000 for each continuing violation. FCC Warning Label The following label will appear on the VHF Signal Booster in accordance with the FCC:

WARNING This is NOT a CONSUMER device. It is des igned for in stallatio n by FCC LI CENSEES and QU ALIFIED INSTALLERS. You MUST have an FCC LIC ENSE or express co nsent of an FCC Licen see to o perate this d evice. You MUST register Class B signal boo sters (as defined in 47 CFR 90.219) online at www.fcc.gov/signal-boosters/

registration. Unauthorized us e may result in significant forfeiture p enalties, including penalties in excess of $100,000 fo r each continuing violation. 2017 Westell Technologies 1.877.844.4274 WESTELL.COM July 2018; Doc No. VHF Signal Booster UM RA Page 13 of 95 FCC Label Placement on the VHF Signal Booster:

VHF Product Manual July 2018, Rev B Top View Side View Top View 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 14 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 1.5 FCC Contact Information:

Federal Communications Commission 445 12th Street SW Washington, DC 20554 Phone: 1-888-225-5322 TTY: 1-888-835-5322 Fax: 1-866-418-0232 IC Compliance As per RSS-131 Issue 3:

Nominal passband gain: 80dB Nominal bandwidth: 2MHz Rated mean output power: +24dBm Input and Output impedances: 50 ohms The Manufacturers rated output power of this equipment is for single carrier operation. For situations when multiple carrier signals are present the rating would have to be reduced by 3.5dB especially where the signal is re-radiated and can cause interference to adjacent band users. This power reduction is to be by means of input power or gain reduction and not by an attenuator at the output of the device. RF exposure statement for ISED: This device complies with Health Canadas Safety Code. The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not emit RF filed in excess of Health Canada limits for the general population; consult safety code 6, obtainable from Health Canadas website at www.hc-sc.gc.ca/rpb The antenna/s used for this transmitter must be installed to provide a separation of at least 55 cm in DL and 55 cm in UL from all persons and must not be collocated or operating in conjunction with any other antenna or transmitter. Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 15 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Selon RSS-131 Issue 3 :

Gain de bande passante nominale : 80dB Band passante nominale: 2MHz Puissance nominale de sortie moyenne: +24dBm Entre et sortie impdances: 50 ohms Puissance de sortie nominale du fabricant de cet quipement est pour opration porteuse unique. Pour les situations lorsque plusieurs signaux porteurs figurent la notation devra tre rduite de 3.5dB surtout o le signal est re-rayonn et peut causer des interfrences aux utilisateurs de la bande adjacente. Cette rduction de puissance doit tre au moyen de la rduction de puissance ou de gain dentre et non par un attnuateur la sortie de lappareil. Dclaration dexposition aux RF pour ISED : Cet appareil est conforme avec le Code de scurit de Sant Canada. Le programme dinstallation de cet quipement radio doit sassurer que lantenne est situe ou fait telle quelle nmet pas de RF a dpos plus de limites de Sant Canada pour la population gnrale ; consulter le code de scurit 6, disponible depuis le site Web de Sant Canada www.hc-sc.gc.ca/rpb Lantenne/s utilise pour ce transmetteur doit tre install pour fournir une sparation dau moins 55 cm en DL et UL 55 cm de toute personne et ne doit pas tre colocaliss ou fonctionner en conjonction avec toute autre antenne ou transmetteur. Changements ou modifications non expressment approuves par la partie responsable de la conformit pourraient annuler autorisation votre dutiliser lquipement. 2 Product Overview 2.1 Product Information The VHF Signal Booster was developed for use in enclosed structures where signals from local public safety towers to operate mobile units is poor or unavailable. Adequate signal strength must be available outside the structure as a prerequisite to achieving in-building coverage. The device is connected to an external antenna, normally located on a roof, and to one or more internal antennas placed strategically throughout the area where wireless service is desired. The VHF Signal Booster Series is a Digital Signal Booster that operates in the 136 174 MHz frequency range. The external antenna is typically directional, such as a Yagi or Panel antenna. Internal antennas are typically omnidirectional, although various other types may be used, depending on the coverage application. The Signal Booster amplifies both the uplink (mobile to base) and downlink (base to mobile) signals, thus facilitating communications to and from the intended wireless infrastructure. With a maximum total of 80 dB nominal gain on both the uplink and downlink, gain can be adjusted over a range from 52 dB to 80 dB in 1 dB steps. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 16 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Each band has a separate intermediate filtering. The intermediate filtering is done using FPGA based Digital Signal Processing that, among many, has the following features:

High Selectivity vs Low Delay AGC per channel and per time slot Squelch per channel and per time slot Integrated Spectrum Analyzer This Signal Booster is capable of handling 32 filters in uplink and 32 filters in downlink. The center frequency and BW of each one of the filters can be tuned via a software interface. This Digital Signal Booster is intended to be used in P25Ph1, P25Ph2, TETRA, DMR, Mototrb and Conventional radio systems. This Digital Signal Booster has a heavy duty IP67/NEMA4X cabinet for outdoor usage, it is designed to be wall or pole mounted. 2.2 Product Features IP67/NEMA 4X enclosure Digital Class A Channel Selective 24 dBm (1/4 Watt) Supports up to 32 Channels (Uplink and Downlink) NFPA 1221 & 72 (2016) compliant Uplink and Downlink squelch, per channel UL Listed 80 dB Gain Dry Contacts for fire panel connection Supports SNMP Web-Based GUI Independent power and gain control per channel Integrated spectrum analyzer Included Accessories 2.3 Table 2-1 contains the items that are shipped with the UHF Public Safety Signal Booster. Table 2-1: Included Accessories Quantity Description 1 1 AC or DC Power Cord Hex Key 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 17 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 18 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 2.4 Optional Accessories A complete line of accessories is available from Westell. Check with your Westell distributor for any additional items needed. Some products that are suitable for most in-building needs are listed in Table 2-2. Table 2-2: Optional Accessories WESTELL.COM July 2018; Doc No. VHF Signal Booster UM RA Page 19 of 95 2017 Westell Technologies 1.877.844.4274 VHF Product Manual July 2018, Rev B 136-174 MHz 24 dBm (1/4 Watt) 24 dBm (1/4 Watt) Up to 32 Uplink and Downlink 80 dBm 52-80 dB, 1 dB increments Channel Selective (90 KHz, 45 KHz, 30 KHz, 20 KHz, and 15 KHz BW)

<-13 dBm 9.0 dB Max 90 KHz, 14s 45 KHz, 23s 30 KHz, 32s 20 KHz, 45s 15 KHz, 55s 0 dBm Uplink (Max)

-20 dBm Downlink (Max) 1.5:1 Max 3 Product Specifications 3.1 RF Specifications Frequency Range Downlink Output Power Uplink Power Channels Supported Gain Attenuation Range Passband IMD Noise Figure Delay Input Power (w/o Damage) VSWR 3.2 Electrical Specifications Specification Main Power Input Voltage Power Consumption 1/4W Power Output 3.3 Mechanical Specifications Dimensions (LxWxD) Weight Cooling Weatherproofing Connectors Antenna Ports User Interface Alarm Relay Operating Temperature Mounting 2017 Westell Technologies 1.877.844.4274 110/220 VAC or DC (+24VDC to -48VDC)

<170W Max. 20.2 x 18.2 x 9 inches (WST012) 55 lbs. (WST012) Passive IP-67/NEMA 4X N-Type Female USB 6-Wire Dry Contact Connector

-25 to +55 C Wall, Rack or Pole mounting July 2018; Doc No. VHF Signal Booster UM RA Page 20 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 4 Product Appearance 4 Product Appearance 4 Product Appearance 4 Product Appearance 4.1 External Configuration Figure: VHF 2 Port Duplexed Configuration Figure:

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Figure: VHF 4 Port Non-Duplexed Configuration Figure:

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2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 21 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Figure: WST021 Configuration Figure:

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5 5 5 5 Product Dimensions Product Dimensions Product Dimensions Product Dimensions Figure: WST012 dimensions 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 22 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Figure: WST021 dimensions Figure:

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2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 23 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 5 Installation Guidelines 5.1 Important Installation Guidelines Westell Signal Boosters are designed for outdoor usage with a weather proof outdoor NEMA4 cabinet that can be mounted without any kind of shelter from rain, snow or hail. The Signal Booster must be installed in a vertical orientation (i.e. Connectors on the bottom of the unit). Inadequate isolation between the outside and inside antennas may cause regenerative feedback in the system. This feedback can cause the amplifier to emit a continuous signal at maximum Amplitude, and, in some cases, interfere with normal operation of the donor site. Careful consideration of the layout and placement of the system is imperative to minimize this possibility and to minimize the amount of signal leaking from the Building. Do not disassemble the Signal Booster. Danger!

Refer to the 1.3 Safety Guidelines section for proper antenna selection and installation. To avoid serious injury, death and/or damage to the Signal Booster, do not install donor or server antennas near overhead power lines or high power components. Allow enough distance so that falling antennas would not come in contact with those components. Electric shock may occur if the Signal Booster is installed in close proximity to water. WARNING!

Amplifier or handset damage may occur if a handset is connected directly to the Signal Booster or to the coax that leads to the Signal Booster. The Signal Booster must be connected to ground for protection. We recommend that installers do not wear jewelry or metal accessories when installing this Signal Booster. Do not place cables or tools that may damage the Signal Booster in close proximity to it. Check the installation site for hazardous conditions such as water-covered floors or badly worn or damaged cables prior to installation. Lifespan and performance of the Signal Booster may be reduced if the unit is operating outside its nominal temperature range. However, to improve reliability, it is recommended to mount the Signal Booster on a site with shelter from direct exposure to sun, rain, snow and hailing. It is not recommended to install the Signal Booster under bad weather conditions, such as:

Intense rainfall, snowfall or hail Storm or high wind Extremely low or high temperature High humidity of the air 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 24 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 5.2 Donor Antenna Installation Guidelines Accurately determine the azimuth to the donor site. Obtain the donor site information and approval from the service provider/carrier. Ensure that the radiation path to the donor site is unobstructed. Mount the donor antenna at or toward the edge of the roof, in the direction of the donor site. Avoid having the RF signal from the donor pass above the location(s) of the service antennas. Normally, the service antennas are installed behind and below the donor antenna, as viewed from above. This approach helps avoid interference and feedback to and from the service antennas. Normally, mounting the donor antenna higher will allow a less obstructed path to the donor site. However, in high traffic metro areas, avoid mounting the donor antenna higher than necessary, as the quality of the donor signal may become less stable and it is more likely to encounter adjacent channel interference. When possible, shield the rear of a donor antenna by locating it so that any HVAC units and/or penthouse structures are behind the antenna, relative to the donor cell site location. 5.3 Indoor Antenna Installation Guidelines Use omnidirectional antennas (see section 2.4. Optional Accessories) indoors and locate them centrally with respect to the intended coverage area to minimize signal leakage to the outside. Only use directional antennas indoors in special cases when higher gain and directionality would be helpful and RF exposure limits will not be exceeded. To avoid Signal Booster uplink overload and gain limiting, mount the indoor antennas away from areas where mobile subscribers frequently use their phones / radios, such as desks or dispatch areas. To determine the quantity and locations of indoor antennas, measure Received Signal Strength Indication (RSSI) using DM Tool software to determine areas of weak signals. These are the approximate areas where indoor antennas may be needed. Be aware that the signal from an indoor antenna, in most cases, can be expected to penetrate approximately two standard sheet rock walls to reach users. If the signal must travel through more than two walls, or if the walls are made of materials other than sheet rock, it may be necessary to split the available signal and add more antennas. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 25 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 5.4 Mounting the Signal Booster A. Mount the bracket The Signal Booster can be mounted on a wall or pole. The bracket is provided with the Signal Booster. Figure: Bracket attachment to a wall using three fixing screws Figure:

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Figure: Bracket attachment to a pipe using four inox hose clamps Figure:

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2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 26 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B B. After attaching the bracket hang the Signal Booster. Figure: Hang the Signal Booster Figure:

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C. Secure the cabinet to the bracket. To attach the Signal Boosters cabinet to the bracket use the provided four M6 x 1/2 allen screws and follow the indicated steps:

2017 Westell Technologies 1.877.844.4274 Figure: Secure the cabinet to the bracket Figure:

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July 2018; Doc No. VHF Signal Booster UM RA Page 27 of 95 WESTELL.COM D. To open the cabinet, release the 8 door screws using the provided special allen key. VHF Product Manual July 2018, Rev B TOOL TIPS Use allen key N 6 Figure: Release Signal Booster cover Figure:

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Figure: Open the Signal Booster 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 28 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Figure: Close the Signal Booster Figure:

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Figure: Secure Signal Booster Figure:

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Mounting Cabinet WST021 Mounting Cabinet WST021 Mounting Cabinet Mounting Cabinet WST021 WST021 A. This cabinet can be mounted on a wall. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 29 of 95 WESTELL.COM Figure: Secure Signal Booster VHF Product Manual July 2018, Rev B Figure: : : : Hang the Signal Booster Figure Figure Figure Figure: Secure Signal Booster cover Figure:

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2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 30 of 95 WESTELL.COM Figure: Secure Signal Booster cover Figure:

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VHF Product Manual July 2018, Rev B 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 31 of 95 WESTELL.COM B. To open the cabinet, release the door screws using a flat screw driver. VHF Product Manual July 2018, Rev B Figure: Open the Signal Booster cover Figure:

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Figure: Close the Signal Booster cover Figure:

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2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 32 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Figure: Secure Signal Booster cover Figure:

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Figure: Secure Signal Booster cover Figure:

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Use of Liquid Tight Conduit Use of Liquid Tight Conduit Use of Liquid Tight Conduit Use of Liquid Tight Conduit The unit has available a Liquid Tight Conduit Fitting connector for tubes. The unit as standard has the connector installed, so if the user requires to use this connector, if available, the NFPA cables, Ethernet, DC or AC cables can be routed through this connector. Figure: AC Routing through cable gland or conduit connector Figure:

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2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 33 of 95 WESTELL.COM If the is not going to use Liquid Tight Conduits, then the connector should be replaced by the provided sealing cup. VHF Product Manual July 2018, Rev B Figure: Remove the conduit connector Figure:

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Figure: Install the sealing cup Figure:

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Replacement of Conduit connector to sealing cup NEMA4 considerations This device is equipped with a NEMA4 enclosure, however, to ensure the NEMA rating, the user must have the following considerations:

1. Correct use of the Liquid Tight Conduit. In case this interface is not used, it should be replaced with the sealing cup. 2. Sealing cups should be installed in the non-used cable glands. 3. The RF Ports should be perfectly mated. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 34 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Mounting Cabinet WST021 Mounting Cabinet WST021 Mounting Cabinet Mounting Cabinet WST021 WST021 The unit has available a Liquid Tight Conduit Fitting connector for tubes. The unit as standard has the connector installed, so if the user requires to use this connector, if available, the NFPA cables, Ethernet, DC or AC cables can be routed through this connector. If the is not going to use Liquid Tight Conduits, then the connector should be replaced by the provided sealing cup. Figure: Remove the conduit connector Figure:

Figure:

Figure:

Figure: : : : Install the sealing cup Figure Figure Figure Replacement of Conduit connector to sealing cup NEMA4 considerations This device is equipped with a NEMA4 enclosure, however, to ensure the NEMA rating, the user must have the following considerations:

1. Correct use of the Liquid Tight Conduit. In case this interface is not used, it should be replaced with the sealing cup. 2. Sealing cups should be installed in the non-used cable glands. 3. The RF Ports should be perfectly mated. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 35 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 36 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Mounting clearance Mounting clearance Mounting clearance Mounting clearance When mounting the cabinet, the clearances around it should be considered to allow a clear open door and heat dissipation. Figure: Mounting clearance WST012 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 37 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Figure: Mounting clearance WST021 Figure:

Figure:

Figure:

Rack mount option Rack mount option Rack mount option Rack mount option Even though this cabinet is designed mainly to be wall or pole mounted, it has the option to be installed in a 19 standard rack using the Rack Mount Option. The Rack Mount Option are adaptors that allow the installation of the cabinet bracket to the 19 rack. It is recommended to use 2 post racks, this way, using back-to-back installation, 4 cabinets can be installed in a single 2 post RU rack. Mount the 19 rack Mount the cabinet adaptors. bracket to the adaptors. Mount and Fix the Signal Booster to the bracket. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 38 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Figure: Installation steps for the rack mount option WST012 Figure:

Figure:

Figure:

Mounting clearance on rack mount option Mounting clearance on rack mount option Mounting clearance on rack mount option Mounting clearance on rack mount option When mounting the cabinet in a 19 rack, the clearances around it should be considered to allow a clear open door and heat dissipation. Figure: Mounting clearance for the rack mount option WST012 Figure:

Figure:

Figure:

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 39 of 95 WESTELL.COM 6 Connecting the Signal Booster VHF Product Manual July 2018, Rev B Figure: RF ports and Power Cable Glands location Figure:

Figure:

Figure:

6.1 6.1 6.1 6.1 Connection step by step Connection step by step Connection step by step Connection step by step A. RF Ports: Connect the service antennas to the To Mobile Port and each PS700 and PS800 donor antennas to the To Base RF Ports. N type female connectors are used in this Signal Booster. B. Once the RF ports of the Signal Booster are properly loaded connect the Main AC power. If using the AC model, electrical installation must provide differential and thermo-magnetic breaker elements according to electric safety international regulations. C. Make sure that not used cable glands are properly sealed. For this, use the seal plug and self-amalgam ating tape. D. Auxiliary DC connection can be provided to the device from an external DC source. There is a dedicate d port for this purpose, and a dedicated DC connector labelled VDC IN located inside the cabinet. Plea se check appropriate DC voltage at Signal Booster specification sheet. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 40 of 95 WESTELL.COM E. NFPA Dry Contacts: there is a dedicated cable gland for this purpose. A multi-conductor cable can be used to connect the NFPA dry contacts to the Fire Department Control Box. VHF Product Manual July 2018, Rev B Figure: NFPA Dry Contact connection location inside the cabinet Figure:

Figure:

Figure:

F. Once the Signal Booster is connected to the power source, it takes about 40 seconds to run a booting routine. After that time, the Signal Booster is ready to be connected via USB cable to a computer running Westell Control Software (WCS) to be properly configured. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 41 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 7 System Operation BE SURE THAT TO MOBILE AND TO BASE PORTS ARE PROPERLY LOADED EITHER WITH 50 OHMS DUMMY LOADS, OR RADIATING SYSTEM. The Digital Signal Booster may come in one out of two versions: a 32 narrow-band filters version or an up-to-8 adjustable-bandwidth filters version. It is even possible to have both versions in one device so that the user can choose either of them. Depending on which version is actually running, the main screen of the Westell Control Software will have a slightly different look. 1. Turn on the Digital Signal Booster, connect computer to Signal Booster through Ethernet or USB cable, and run Westell Control Software. It is recommend to turn off the power amplifiers. PA OFF in narrow-band version 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 42 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B PA OFF in adjustable bandwidth version 2. Setup desired channel frequencies. Since Westell Signal Booster is channel selective, user has to know what frequencies are used in base station. Narrow-band filter frequency settings Program frequencies and bandwidths Frequency and Bandwidth settings 3. Turn on UL and DL power amplifiers, and check that any alarm indicator is active. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 43 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B TURN ON POWER AMPLIFIERS PA ON in narrow band version TURN ON POWER AMPLIFIERS PA ON in adjustable bandwidth version 4. Setup desired operating gain using FCS. UL and DL chain are independent, so both values must be set. To set DL band gain is recommended that AGC works around 3dB in each channel, in this way, maximum output power is achieved. 5. Set up squelch settings. Controls are independent in UL and DL bands. Typical values for UL are -

110dBm for squelch threshold. For DL, recommended value for squelch threshold is minimum level received in any active channel minus 10dB. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 44 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Squelch, gain and power settings: narrow band Squelch, gain and power settings: adjustable bandwidth 6. For narrow band filters version, setup desired filter bandwidth, depending on presence of adjacent channels. In principle, recommended bandwidth filter is 90KHz due to its low delay, but if adjacent signal is detected, narrow filters can be used. Spectrum analyzer of FCS can be used to know rejection to undesired signals. It is recommend that adjacent channels output power be, at least, 10dBc lower than useful carrier. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 45 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B PROGRAM FILTER BANDWIDTH Filter bandwidth selection for narrow band filters version Next figures, shows how integrated spectrum analyzer can help to select bandwidth filters:

Poorly rejected adjacent channel with 90KHz filter Adjacent channel rejection with 90KHz filter WESTELL.COM July 2018; Doc No. VHF Signal Booster UM RA Page 46 of 95 2017 Westell Technologies 1.877.844.4274 VHF Product Manual July 2018, Rev B Rejected adjacent channel with 20KHz filter Adjacent channel rejection with 20KHz filter 8 Status Indicators There is an indicator panel located at bottom of the Signal Boosters. This LED panel works as a status monitor, in order indicate warning or alarms of Signal Booster. The LED panel has four LEDs, the first one the power ON indication led, labelled PWR. The Second LED, labelled STS summarizes warnings regarding critical operational conditions of the Signal Booster. The third and fourth LED summarizes operational conditions for uplink UL and downlink DL chains. In general, the LEDs have four states: off, slow blinking, fast blinking and on. Next table describes alarm and warning conditions for each led state. Indicator Panel LED indication description 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 47 of 95 WESTELL.COM

VHF Product Manual July 2018, Rev B Signal Booster is not powered or fail in power supply Normal state: Signal Booster is powered on Low output power detected at the "To Mobile" RF port (DL) Normal State. General fail: there is an alarm, whatever the root cause is. Normal state: input signal detected in at least one active filter, at "To Base" RF port from base station (DL) Base Station Warning: no signal is detected coming from base station Normal state: no mismatch detected in "To Mobile" RF output (DL) VSWR alarm: high reflected power detected at "To Mobile" RF output DL) Led OFF Led slow blinking with period of 2 seconds approx. WARNING Table: LED Indication Description Table:

Table:

Table:

Led ON Where:

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 48 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 9 Software 9.1 Introduction Westell Signal Booster can be fully configured and monitored in local and remote mode. Local mode:

o Ethernet or USB port with Windows desktop application Remote mode:

o Remote Web server In following section, each control mode (configuration / monitoring) is described. 9.2 Local Software. Desktop application through Ethernet/USB port 9.2.1 Installation The following section will describe the steps to be followed in order to install and use the Westell Control software with your Westell Signal Booster. 1. Before connect USB cable between computer and Signal Booster, run the WestellControlSoftware.msi File. Next screen will appear 2. Choose the default installation path C:\Program Files

(x86)\WestellControlSoftware. Note that this can change according to your system configuration (32bits or 64bits), language and Windows Version. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 49 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 3. The installer will start to copy the necessary files. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 50 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 4. After installation has completed, a shortcut in user desktop will appear, and new installer windows appears in order to install USB drivers. Follow the installer step-

by-step process 5. Connect Ethernet or USB cable between computer and Signal Booster, keeping the Signal Booster powered off. New USB device will be detected 6. 7. Turn on the Signal Booster BE SURE THAT TO MOBILE AND TO BASE PORTS ARE PROPERLY LOADED EITHER WITH 50 OHMS DUMMY LOADS, OR RADIATING SYSTEM. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 51 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 8. Execute the Westell Control Software. Next window will appear:

User interface controls:

Scan Devices Button: refresh the available COM ports and identify Westell devices Connection Button: connect / disconnect software from Signal Booster List of available devices: below two buttons, is placed a dropdown list that shows all available COM ports. Available COM ports not related to Westell Signal Boosters will be shown with its number and Unknown device label. COM ports related to Westell Signal Boosters will show a device description. Embedded Web browser: graphical area where configuration and monitoring parameters will be shown. File menu: contains menus to save Signal Booster configuration to a file and load configuration from file to Signal Booster. NOTE: if Westell Signal Booster is not turned on, related COM port will appear as Unknown device 8. Click Scan Devices 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 52 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Now, the Westell Digital Signal Booster is shown in the list of available devices, and connection button is enabled. NOTE: Westell Signal Booster could not appear in list, if COM port number is higher than COM16, depending on Windows version. COM port number can be forced to arbitrary number (below COM16) through Device Administrator. In order to change COM number, click Properties pop-up menu. Click Advanced Options Change COM port number 9. Click Connect. Westell Control Software window will be automatically maximized, and web browser will show the configuration screen. Application screens are described in the next section due to these application screens and web pages (in webserver remote mode) are the same. 10. Once Signal Booster is configured, user can disconnect software using connection button, now labelled Disconnect. Initial window will be shown. If Signal Booster is disconnected or turned off, while Westell Control Software is connected to device, software will go back to initial window. Moreover, if some communication problem occurs while device is monitored, the software will go back to initial state as well. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 53 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Initial window for narrow----band filters version Initial window for narrow band filters version Initial window for narrow Initial window for narrow band filters version band filters version Initial window for adjustable bandwidth filters version Initial window for adjustable bandwidth filters version Initial window for adjustable bandwidth filters version Initial window for adjustable bandwidth filters version 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 54 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Initial window for dual firmware version Initial window for dual firmware version Initial window for dual firmware version Initial window for dual firmware version 10 10 10 10 Remote Web Server option Remote Web Server option Remote Web Server option Remote Web Server option 10.1 IP Connection Westell Signal Boosters use an Ethernet module and 3G Router to give TCP/IP connectivity (webserver and SNMP Agent). In local mode, user can connect directly a computer to the Ethernet module using the inside Ethernet cable. In order to access to web browser, default IP addresses of Ethernet module are detailed in the next table:

IP Address 192.168.1.10 IP Address Network submask 255.255.255.0 Network submask Gateway 192.168.1.2 Gateway 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 55 of 95 WESTELL.COM Computer network adapter configuration needs to be set to same network submask and gateway. IP address can take any value in this IP range (192.168.1.11, for instance). These addresses can be changed by user. VHF Product Manual July 2018, Rev B 10.2 Web pages description Once the Ethernet module is properly configured, user can connect to the Signal Booster, writing IP address in URL toolbar of any web browser available in its computer. Default URL is http://192.168.1.10. First screen to appear is Authentication. Default login and password are:

Login Password admin admin Login Password Password can be changed by user, using menu described in next sections. NOTE: in order to restore password, push the button placed close to USB Connector during 5 seconds. After authentication, web browser will load the main page of Westell Signal Booster showing RF configuration and monitoring parameters. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 56 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B At left side of webpage, configuration menus are shown:

Content Status: whole RF configuration and monitoring parameters are shown. These parameters are described in the next section. Tag: user can set a tag to ease Signal Booster identification. For modifying the TAG, write a new value in text field and click over Apply Changes link 2017 Westell Technologies 1.877.844.4274 WESTELL.COM July 2018; Doc No. VHF Signal Booster UM RA Page 57 of 95 IP: At this page, Signal Booster IP address, network submask, gateway address and IP addresses of SNMP Managers are shown. User can set addresses of two SNMP Managers (IP where SNMP agent will send TRAP information). To modify, click over Apply Changes link after writing new values on text fields. VHF Product Manual July 2018, Rev B In case the Signal Booster had been fit with an internal modem-router, its own IP address settings would be fixed and the modem's address would be shown in the greyed boxes. Spectrum: this page shows estimation for input and output spectrum in either DL or UL, whatever is selected by the user. Estimation for output spectrum takes into account RF input levels, and gain, bandwidth filters and squelch options programmed by the user, and it can be a useful tool for users to know how the undesired signals are rejected by the channel selective Signal Booster. The user can change start and stop frequency modifying text fields placed at the page bottom. Minimum span is 200KHz and maximum span is the band covered by the Signal Booster. In case the same frequency is set for both start and stop, then zero-span is set. For user convenience, a zero-span checkbox is available that makes that operation with one click, and chooses the start frequency setting as the measurement frequency. That also disables the stop frequency setting and changes it according to start frequency. And finally, measurements can be averaged up to 32 times. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 58 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Date and Time: page to modify real time clock. When the Signal Booster is not powered, this clock runs with a voltage supply provided by a 3V lithium battery, button type of 20mm (CR2032) with 220mAh. This suffices for at least half year. When the Signal Booster is powered, no current is drained from the battery. So, actual battery life will depend on Signal Booster usage. For battery replacement, please locate battery holder between USB and Ethernet connectors on main board. Battery positive side is UP, i.e. on holder clip. Date and time setting Date and time setting Date and time setting Date and time setting 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 59 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B After clicking on Apply Changes link, next message will appear, warning the user that system needs to be rebooted. Filter Info: following this link, a new window appears with detailed information of frequency and delay response of all available filter bandwidths (1dB, 3dB and 10dB bandwidths and delay at center frequency) Filter tool: assistant to easily configure signal booster filters with minimum delay response (all filters set to 90KHz bandwidth). It is especially useful if carriers are grouped in frequency packets where it is not possible to configure an independent filter for each one. With this tool filtering parameters are automatically set from a desired frequency carriers list. This tool executes in a pop-up window as the image below and is described in next sections:

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 60 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B The desired carrier frequencies of the downlink band, are to be typed in the text area of this window expressed in MHz. The tool will try to enable as many filters of 90KHz bandwidth as necessary for all carriers, using a fine gain of 0dB by default. This is trivial when carrier frequencies are sufficiently separated apart. For instance:

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 61 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B The button "Compute Configuration Proposal" shows the computed filter frequencies in another text area and, if accepted, the button "Apply Proposal" would actually perform the configuration change. However, for carrier frequencies that come in packets, the filter frequencies should not be set too close because the overall response would be distorted. Depending upon signal modulation, that response distortion might not have any consequence. But in the case that distortion cannot be tolerated, consider that the minimum frequency separation between two filters to avoid this problem is 1.25 times the semi-sum of their bandwidths. For instance, two filters width bandwidths 90KHz and 30KHz respectively, must be separated apart by 1.25(90 + 30) / 2 = 75 KHz. Nevertheless, there are certain conditions under which filters can be set closer to make up a single filter with wider bandwidth:

o The frequency separation must be 93.75 KHz. o All of them must have the same bandwidth setting of 90 KHz. o All of them must have the same fine gain setting. The Filter Info window shows the frequency response of the combination of up to five filters:

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 62 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Now, consider for instance a case with the following downlink carrier frequencies: 392.0, 392.05, 392.1, 392.15, 392.2, 393.0 and 394.0 MHz. This is when the Filter Tool comes in handy. It will automatically choose the filters required to cover the range between 392.0 MHz and 392.2 MHz. As shown in next picture, it would set three filters with frequencies 392.00625 MHz, 392.1 MHz and 392.19375 MHz for the four carriers in the packet, and two more filters for the two separated carriers. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 63 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B It is certainly possible to do this same operation manually, in the Filter Control Frame, although it would be less convenient. Should the user set filters without keeping these rules, the software would show a warning message, as in the following image:

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 64 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Password (only via web connection): to modify webpage password, old password is required, and new password needs to be written two times. After clicking on Apply Changes link, new authentication screen appear, where user must write new password. SNMP (only via web connection): user can configure through webserver some SNMP parameters:

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 65 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B o Read-only community and read-write community: set passwords for SNMP agent (typically "public" / "private") o Watchdog Period: time in minutes without external IP access to the device

(HTTP, SNMP or PING) after which the embedded Ethernet module will reboot just in case it were stuck. It does not affect RF functioning. Default value is 1440 minutes, i.e. one day. o Ethernet RESET: resets Ethernet module. o Delete All Traps: clear all alarm conditions and sets trap counter to zero o Trap community: set trap community for each connection to SNMP Manager o Trap port: set UDP port for SNMP trap sending. Default standard port is 162. SNMP polling is done through standard port nr. 161. o Trap repetition: set number of traps that SNMP agent will send every time that alarm conditions vary. Maximum number is five repetitions and the time lapse between them is 10 seconds. o Manager Enable: enables each connection to SNMP Manager independently. If enabled, traps will be sent to manager IP address set in IP section. o Keep-Alive period: Keep-Alive traps can be sent periodically with the purpose of letting the SNMP manager know that the agent is working. The time in minutes between these traps is the Keep-Alive period. Default period is 60 minutes. A setting o 0 disables sending these traps. These traps are not affected by the Trap Repetition mentioned before. Configuration o Apply Changes: as it is said above, this link is used to load changes to the Signal Booster, in configuration, tag, IP, password and date and time menus. After any configuration change, web page will show and icon that allows user to know if configuration has been successfully applied:

WESTELL.COM July 2018; Doc No. VHF Signal Booster UM RA Page 66 of 95 2017 Westell Technologies 1.877.844.4274 VHF Product Manual July 2018, Rev B o Reload Settings: clicking this link, Signal Booster configuration data is refreshed. Version: shows hardware, firmware and software versions of Signal Booster and serial number. 11 11 11 11 RF parameters description RF parameters description RF parameters description RF parameters description Status menu shows whole RF configuration and monitoring data that are distributed along the webpage. The status window is divided in two main blocks: general control and filtering control. First, general control contains signal booster main configuration parameters, while second block is a list with variable number of rows (according to number of enabled filters) which contains detailed configuration and monitoring parameters of each filter. Maximum number of filters is 32 for narrow filters version and 8 for adjustable bandwidth version General control frame for narrow-band version 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 67 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B General control frame for adjustable bandwidth version General control frame for dual version General control frame. There are four sub-sections inside this frame:

o Main uplink control: RF main parameters regarding to uplink band are contained in this section: gain, output power limit, squelch threshold, squelch enable, PA enable control, RF output power indicator, and RF input overload, PA status and stability alarms. Next table describes information of this frame:

Parameter Description Uplink frame 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 68 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Main Gain Set maximum gain of Signal Booster at UL band. Range can vary between models. Power Limit Squelch Enable Set maximum output power of Signal Booster at UL band. System automatically will apply a correction to share this limit between the active channels. For instance, +18dBm band limit means +12dBm maximum output power per channels for 4 active channels. Range can vary between models depending on rated power. Enabling this control, Signal Booster does not transmit in each channel if RF input power do not exceed the threshold level configured according to next row Squelch Threshold If squelch is enabled, input levels below this threshold are not transmitted. PA Enable This control enables / disables PA UL:

Green button and label ON means that PA is enabled, red button and label OFF means that PA is disabled RF Output Power Shows instantaneous RF output power at UL band Overload UL PA Status This alarm indicates that Signal Booster is being overloaded at UL band, due to very high RF input level PA status alarm indication based on current consumption All Filters Same BW If enabled, any change of bandwidth filter of any enabled filter will be applied to all UL filters o Main downlink control: parameters regarding to downlink band. They are almost equal to uplink band. July 2018; Doc No. VHF Signal Booster UM RA Page 69 of 95 WESTELL.COM 2017 Westell Technologies 1.877.844.4274 Downlink frame VHF Product Manual July 2018, Rev B Parameter Description Main Gain Set maximum gain of Signal Booster at DL band. Range can vary between models. Power Limit Squelch Enable Set maximum output power of Signal Booster at DL band. System automatically will apply a correction to share this limit between the active channels. For instance, +36dBm band limit means +30dBm maximum output power per channels for 4 active channels. Range can vary between models depending on rated power. Enabling this control, Signal Booster does not transmit in each channel if RF input power do not exceed the threshold level configured according to next row. Squelch Threshold If squelch is enabled, input levels below this threshold are not transmitted. PA Enable This control enables / disables PA DL:

Green button and label ON means that PA is enabled, red button and label OFF means that PA is disabled RF output power Shows instantaneous RF output power at DL band Overload DL Comm. Error AGC Fail VSWR Tx Power Low This alarm indicates that Signal Booster is being overloaded at DL band, due to very high RF input level Indicates that communication with monitoring PA Board is lost. In this case, following three alarms will not be available This alarms appear if output power is higher than maximum output power (typical +37dBm) plus 3dB. Alarm appears if high reflected power is detected in To mobile connector Indicates that measured output power at PA output is lower than expected according to RF input levels and configured gains 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 70 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B General control frame for narrow band and dual version o General control General control frame Parameter Description Linked UL/DL frequencies Squelch mode control If 'Yes' then frequency setting in DL will also modify UL according to frequency band split preset in factory. If

'No' then filter frequencies can be set independently in UL and DL. If this control is set to Linked, DL channels without input signal (according to DL Squelch threshold) automatically squelch related UL channels RESET Reboots digital signal processor Simplex Mode (only available in some narrow filters versions) If enabled, signal booster works in simplex mode. This is, any DL signal detected in any DL enabled filter blocks all UL filters and any UL signal detected in any UL enabled filter blocks all DL filters Temperature Shows internal Signal Booster temperature Rx Power Low Alarm is active, if signal is not detected in any DL channel Hardware fail alarm Indicates critical malfunctioning in digital signal processor Show filters 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 71 of 95 WESTELL.COM

VHF Product Manual July 2018, Rev B User can change filtering mode in case of dual version signal booster Firmware selection

(only for dual version) Simplex mode checkbox control is only visible in devices with such capability. It allows signal flow only in one direction, either uplink or downlink, at any given time. The chosen direction is made automatically based on signal detection which, in turn, depends on squelch. Therefore, turning on simplex mode automatically turns on squelch, both in uplink and downlink sections, and disables these controls for the user. Besides, it also sets squelch mode to "Not Linked" and disables this control, too. This is necessary since otherwise the lack of RF input signal in downlink would mute the uplink RF input, thus blocking all communication. The look of the general control frame in simplex mode is as in next image:

Filter control frame for narrow-band version Filtering control frame. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 72 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Filter control frame for narrow-band version Filter control frame for adjustable bandwidth version Filter control frame: shows configuration and monitoring information of all filters. The frame is divided in two: uplink and downlink. Data showed in each half is symmetric. Parameter On Frequency Filter control frame Description Allows to enable/disable each filter Configures center frequency of each filter Bandwidth filter control for narrow-band version only There are up to five available filters (depending on factory setup) to adjust the trade-off between rejection to undesired signals and delay Fine gain control Each channel gain can be fine adjusted RF input power Shows RF input level for each channel Signal detection 2017 Westell Technologies 1.877.844.4274 With this indicator, system shows if signal is detected at input, according to squelch threshold. Moreover, with Squelch Mode = Linked, UL shows no signal if signal is not detected in the same DL channel even if UL signal exceed squelch threshold. Similarly, with simplex mode enabled, if one signal is detected at DL band, all UL filters will show No signal July 2018; Doc No. VHF Signal Booster UM RA Page 73 of 95 WESTELL.COM RF output power VHF Product Manual July 2018, Rev B Shows estimation for RF output level for each channel, according to programmed gain and AGC control. Shows OFF in the same cases that signal detection shows No signal AGC Indicates gain reduction due to power limitation control. In case of adjustable filter version, filter control frame is slightly different. According to entry mode button, frequency and bandwidth parameter configuration can be:

o Center frequency (in 25KHz steps) and bandwidth filters (50KHz steps) o Start and stop frequencies (in 25KHz steps) 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 74 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B 12121212 Spectrum Analyzer Spectrum Analyzer Spectrum Analyzer Spectrum Analyzer The spectrum analyzer feature of the Signal Booster is a useful tool for commissioning and troubleshooting. This section explains how to use it. Scan refresh indication Frequency at cursor position Stop frequency setting Resolution bandwidth &

Sweep time readout Uplink / Downlink Uplink / Downlink switch Spectrum analyzer settings switch Input & Output trace enable Zero Span switch Stop frequency setting Input and output signals are scanned successively and can be shown or hidden independently:

2017 Westell Technologies 1.877.844.4274 Spectrum input/output selection July 2018; Doc No. VHF Signal Booster UM RA Page 75 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Either uplink or downlink signal paths are chosen and average up to 32 can help to clean noise signals. Resolution bandwidth and sweep time are set automatically. Spectrum UL / DL selection When start and stop frequencies are set equal, then zero-span mode is activated to show evolution of signals with time, which may be of special interest with pulsed signals. The same thing can be achieved by setting the zero-span checkbox, with the convenience that start frequency change would also change stop frequency accordingly. Spectrum zero-span mode Resolution bandwidth becomes enabled in zero-span mode and sweep time is automatically set according to its setting, which is user selectable between 25.000Hz, 12.500Hz, 6.250Hz and 3.125Hz. Average setting will also impact sweep time in a similar way. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 76 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Zero span settings 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 77 of 95 WESTELL.COM 13131313 SNMP Agent SNMP Agent SNMP Agent SNMP Agent VHF Product Manual July 2018, Rev B Westell Signal Booster includes a SNMPv1 agent that allows user to supervise the device by means of 'SET' and 'GET' type commands and, asynchronous traps to notify alarm conditions can be sent. The device is intended to be monitored by a polling NMS but it can send traps to a NMS or Trap Receiver if enabled. Westell can provide a NMS system upon request. The following sections will show the user configurable, relevant information that can be read via SNMP from the device. The tables will describe these values in order to explain how the information has to be read and interpreted. MIB Description The associated MIB document is WESTELL-BDA-SYSTEMv13-MIB.mib. The Westell MIB is divided into blocks. Each block describes the characteristics and values of a specific element but not all elements are implemented in this agent. Each MIB block is divided in two segments, named 1T and 2T. Segment 1T contains the information that is fixed & read only. Segment 2T has the information that can vary over time, regardless of it being read/only or read/write. The following sections will show the user configurable, relevant information that can be read via SNMP from the device. Manager This is a table with 2 consecutive elements, one for each NMS. No checking is done of the validity of the information stored in the table, so extra care must be taken by the user. SNMP Managers table Field Name OID Description Man2TAddress[0]

Man2TAddress[1]

1.3.6.1.4.1.26355.2.50.3.2.1.2. 0 First NMS Address 1.3.6.1.4.1.26355.2.50.3.2.1.2. 1 Second NMS Address Type R/W R/W 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 78 of 95 WESTELL.COM Man2TPort[0]

Man2TPort[1]

Man2TEnable[0]

Man2TEnable[1]

1.3.6.1.4.1.26355.2.50.3.2.1.3. 0 1.3.6.1.4.1.26355.2.50.3.2.1.3. 1 1.3.6.1.4.1.26355.2.50.3.2.1.5. 0 1.3.6.1.4.1.26355.2.50.3.2.1.5. 1 Man2TAliveNotificationPeri 1.3.6.1.4.1.26355.2.50.3.2.1.6. od[0]

0 Man2TAliveNotificationPeri 1.3.6.1.4.1.26355.2.50.3.2.1.6. od[1]

1 VHF Product Manual July 2018, Rev B First NMS Port where to send traps R/W Second NMS Port where to send traps R/W First NMS. 1= Enabled, 2=Disabled R/W Second NMS. 1= Enabled, 2=Disabled. R/W First NMS. If enabled in Man2TEnable, defined time between keep-alive R/W traps. Second NMS. If enabled in Man2TEnable, defined time between R/W keep-alive traps. The following MIB tree representation shows this table:

2017 Westell Technologies 1.877.844.4274 SNMP Managers table WESTELL.COM July 2018; Doc No. VHF Signal Booster UM RA Page 79 of 95 VHF Product Manual July 2018, Rev B The following picture shows the same table as seen by the Westell NMS:

NMS: SNMP Managers table Network This is a table has just one element with two items. The first one is the device's IP address and it is read-only to avoid unwanted miss-configuration. This can only be changed by means of the embedded web server or locally, through USB, by means of the Westell Control Software. The second item is a kind of button intended for resetting the embedded Ethernet hardware interface. SNMP Network table Field Name OID Net2TIp[0]

1.3.6.1.4.1.26355.2.50.4.2.1.2. 0 Description IP address Net2TResetNetwork[0]

1.3.6.1.4.1.26355.2.50.4.2.1.3. Network reset: reads as idle(1), sets to 0 reset(2) 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 80 of 95 WESTELL.COM Type R/O R/W The following MIB tree representation shows this table and following there is the NMS view:

VHF Product Manual July 2018, Rev B SNMP Network table NMS: SNMP Network table Device This is also a one element table, providing several informative fields, but only relevant and implemented one is the Location field, which allows to easily identify a device by a name provided by the user, usually related to the place where it is located. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 81 of 95 WESTELL.COM SNMP Device table Field Name OID Description 1.3.6.1.4.1.26355.2.50.5.2.1.2. 0

-

VHF Product Manual July 2018, Rev B Type R/W 1.3.6.1.4.1.26355.2.50.5.2.1.3. 0 1.3.6.1.4.1.26355.2.50.5.2.1.4. 0 1.3.6.1.4.1.26355.2.50.5.2.1.5. 0 1.3.6.1.4.1.26355.2.50.5.2.1.6. 0 1.3.6.1.4.1.26355.2.50.5.2.1.7. 0 1.3.6.1.4.1.26355.2.50.5.2.1.8. 0 String with up to 30 characters R/W

-

-

-

-

-

R/O R/O R/O R/O R/O Dev2TPowerOn[0]

Dev2TLocation[0]

Dev2TConnectionStatus[0]

Dev2TMainPowerStatus[0]

Dev2TBatteryStatus[0]

Dev2TIsolationStatus[0]

Dev2TDoorStatus[0]

MIB tree view:

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 82 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B SNMP Device table The Westell NMS view shows this table under the tab named info:

NMS: SNMP Device table Additional information is shown by clicking on the link named Description. This extra piece of information comes from the fixed table, Dev1Table. The most relevant items in this table are the following ones:

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 83 of 95 WESTELL.COM SNMP Device Group table VHF Product Manual July 2018, Rev B Field Name OID Description Type 1.3.6.1.4.1.26355.2.50.5.1.1.3. 0 1.3.6.1.4.1.26355.2.50.5.1.1.1 9.0 das.info (conformance group) R/O URL of embedded web server R/O Dev1TGroup[0]

Dev1TurlExtern[0]

Alarms Alarms tables provide information regarding the status of key parts in the system. The fixed table gralAlarm1Table provides self-explanatory identifiers, gralAlarm1TId, for each relevant subject. The second item in each element of this table is the gralAlarm1TGroup. When the device being monitored is a Remote unit, this item just takes the value 'das.alarms '. However, since the Master unit carries information from all the devices in the whole DAS system, it provides a different value for each device to which the alarm is assigned to, be it the Master unit, any of the Remote units or any of the Expansion units. Therefore, the actual number of elements in this table for the Master unit, depends on how many devices compose the DAS system. The third item of each element, gralAlarm1TDescription, is left blank, since the first one suffices for that purpose. SNMP Alarm Group table Field Name OID Description GralAlarm1TId[0]

GralAlarm1TGroup[0]

GralAlarm1TDescription[0]

1.3.6.1.4.1.26355.2.50.13.1.1. 2.0 1.3.6.1.4.1.26355.2.50.13.1.1. 3.0 1.3.6.1.4.1.26355.2.50.13.1.1. 4.0 Descriptive identifier string Type R/O Conformance group for general alarms R/O

-

R/O 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 84 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B The alarm identifiers available are the following ones:

AlarmGeneralFail AlarmHwFail AlarmRxLow Board malfunction that cannot be determined. Digital signal processor failure. No input signal is detected in the downlink direction in any of the activated filters. Aside from a faulty part, as the donor antenna or RF cable, this also might be caused be a problem with the base station or frequency configuration. Notice also that signal detection is dependent on squelch threshold setting. Because of that, this is considered a warning instead of an alarm. High device temperature (over 85C). AlarmTempHigh AlarmOverloadUplink Excessive RF input signal in UL. AlarmOverloadDownlink Excessive RF input signal in DL. AlarmTxLowDownlink Detected RF output power much lower than expected. Since output power measurement is performed by the dedicated monitoring board, a fault in that board would make this item be set as Unavailable and AlarmPAFaultDownlink set to true. AlarmTxHighDownlink Excessive RF output power detected (3dB higher than rated). This is most likely due to bad gain settings, since AGC would limit output power otherwise. AlarmPAFaultUplink Uplink Power Amplifier failure. This alarm is available for certain amplifier types only, and for the rest an 'unavailable' status is set in the next table. AlarmPAFaultDownlink Downlink Power Amplifier failure. A communication failure with the dedicated monitoring board itself, throws this alarm, too. AlarmVswr RF mismatch of PA output is detected. Since VSWR measurement is performed by the dedicated monitoring board, a fault in that board would make this item be set as Unavailable and AlarmPAFaultDownlink set to true. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 85 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B SNMP Alarms Group table On the other hand, the mutable table gralAlarm2Table provides the actual status of each alarm. This table has one element for each element in gralAlarm1Table. Each element has two items. The first one is a status identifier, gralAlarm2TStatus, be it 'ok', 'warning', 'fail' or

'unavailable'. The second item is a short description of the fault, mainly for human readability. SNMP Alarm table 2 Field Name OID Description GralAlarm2TStatus[0]

1.3.6.1.4.1.26355.2.50.13.2.1. 2.0 Status enumeration GralAlarm2TEventDescriptio 1.3.6.1.4.1.26355.2.50.13.2.1. n[0]

3.0 Short descriptive string Type R/O R/O 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 86 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B The next picture is the MIB tree view of this table, and the Westell NMS provides a combined view of both tables and groups alarms:

SNMP Alarms table NMS: SNMP Alarms table WESTELL.COM 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 87 of 95 VHF Product Manual July 2018, Rev B 14141414 SNMP Traps SNMP Traps SNMP Traps SNMP Traps General Explanation For any event that may set or clear an alarm in the gralAlarm2Table, there is a SNMP trap that may be sent by the embedded SNMP agent to the manager, if enabled. Therefore, the list of traps closely reassembles the entries in the alarms table. Furthermore, there is also a keep-

alive trap for letting the SNMP manager that the agent is working, in case that polling is not being done. Each trap message has the following fields (except for the keepAlive trap, whose only object is the agent's IP address An identification number associated to the event being signaled. A severity indication number. A short string description for human readability. The following list gathers all the available identifiers:

SNMP Trap descriptions and Enterprise Specific IDs Source event Description Keep-alive General Failure Hardware Failure System sends this trap periodically. Period is set with Keep-

Alive Period setting of the trap manager. When this trap is thrown, the trap counter is not incremented. It is always in cleared state. This trap indicates that the board controller is not responding to the remote supervision system. This trap indicates malfunction related the Digital Signal Processor. Rx Input Low DL Downlink input signal is not detected in any active filters. Temperature Internal repeater temperature exceeds +85C. Rx Overload UL Uplink RF input level overload Rx Overload DL Downlink RF input level overload Tx Low DL Detected Downlink RF output power is lower than expected. ID 3 5 6 10 11 20 21 30 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 88 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Source event Description Tx High DL Downlink RF output power too high Alarm for the UL Power Amplifier if available. Alarm for the DL Power Amplifier. It may be caused by communication error with PA monitoring module. Excessive DL output reflected power: antenna mismatch. PA Fault UL PA Fault DL VSWR ID 31 40 41 50 As it turns out from this list, there is a one-to-one relationship between events triggering traps and their notification identifiers. But the trap identifier does not tell whether the event was to trigger the alarm state or to cancel it. That is the purpose of the severity identification number in the trap message. The following table lists the severity numbers used:

SNMP Trap status binding Severity Description StatusID CRITICAL System malfunction comes into effect WARNING CLEARED System warning comes into effect. System malfunction or warning is canceled. UNAVAILABLE System state cannot be determined 1 4 5 6 Trap status binding Binding string 3 2 1 99 fail warning ok unavailable The character string attached to each trap message includes both a short event description plus a severity description such as OK or FAIL. As an example, the following picture shows a snapshot of a trap receiver getting traps from a unit at address 172.18.21.10. The time-stamp shows time since system boot and SNMP Version is '1'. The severity is set to 'warning'. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 89 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B SNMP Trap in trap receiver Example trap capture 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 90 of 95 WESTELL.COM SNMP Trap capture VHF Product Manual July 2018, Rev B Trap data explained:

Enterprise: .1.3.6.1.4.1.26355 (Westell Inc.) BDA System MIB: .1.3.6.1.4.1.26355.2.50 (applicable to BDA system) Enterprise specific trap number: 10 (meaning 'Rx Input Low DL' according to the table of trap identifiers). Trap Bindings 1) gralAlarm2TStatus. Value: 2 (see table below) 2) gralAlarm2TEventDescription: Value: RX LOW DOWNLINK - WARNING The first binding in the trap is the gralAlarm2TStatus of gralAlarm2T table in the MIB:

gralAlarm2TStatus OBJECT-TYPE

::= { gralAlarm2TableEntry 2 }

SYNTAX INTEGER { ok(1), warning(2), fail(3), unavailable(99) }

MAX-ACCESS read-write STATUS current DESCRIPTION

"-"

and its equivalence to the trap severity is explained in the table shown in previous section. The second binding is the string used to be human-readable. The only different type of trap is the keep-alive one, which as an example is shown in next picture:

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 91 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B SNMP Keep-alive trap capture and its only binding is the net2TIp part of the net2Table in the MIB net2TIp OBJECT-TYPE

::= { net2TableEntry 2}

SYNTAX IpAddress MAX-ACCESS read-only STATUS current DESCRIPTION

"-"

List of traps The following table lists all bindings in each trap for convenience:

SNMP Trap list Source event Specific Trap ID Bindings Value Keep-alive General Failure 3 5 1.3.6.1.4.1.26355.2.50.4.2.1.2.0 Ip Address 1.3.6.1.4.1.26355.2.50.13.2.1.2.0

{1, 2, 3, 99}

2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 92 of 95 WESTELL.COM Source event Specific Trap ID Bindings 1.3.6.1.4.1.26355.2.50.13.2.1.3.0 VHF Product Manual July 2018, Rev B Value String Hardware Failure Rx Input Low DL Temperature Rx Overload UL Rx Overload DL Tx Low DL Tx High DL PA Fault UL PA Fault DL VSWR 2017 Westell Technologies 1.877.844.4274 1.3.6.1.4.1.26355.2.50.13.2.1.2.1

{1, 2, 3, 99}

1.3.6.1.4.1.26355.2.50.13.2.1.3.1 String 1.3.6.1.4.1.26355.2.50.13.2.1.2.2

{1, 2, 3, 99}

1.3.6.1.4.1.26355.2.50.13.2.1.3.2 String 1.3.6.1.4.1.26355.2.50.13.2.1.2.3

{1, 2, 3, 99}

1.3.6.1.4.1.26355.2.50.13.2.1.3.3 String 1.3.6.1.4.1.26355.2.50.13.2.1.2.4

{1, 2, 3, 99}

1.3.6.1.4.1.26355.2.50.13.2.1.3.4 String 1.3.6.1.4.1.26355.2.50.13.2.1.2.5

{1, 2, 3, 99}

1.3.6.1.4.1.26355.2.50.13.2.1.3.5 String 1.3.6.1.4.1.26355.2.50.13.2.1.2.6

{1, 2, 3, 99}

1.3.6.1.4.1.26355.2.50.13.2.1.3.6 String 1.3.6.1.4.1.26355.2.50.13.2.1.2.7

{1, 2, 3, 99}

1.3.6.1.4.1.26355.2.50.13.2.1.3.7 String 1.3.6.1.4.1.26355.2.50.13.2.1.2.8

{1, 2, 3, 99}

1.3.6.1.4.1.26355.2.50.13.2.1.3.8 String 1.3.6.1.4.1.26355.2.50.13.2.1.2.9

{1, 2, 3, 99}

1.3.6.1.4.1.26355.2.50.13.2.1.3.9 String 1.3.6.1.4.1.26355.2.50.13.2.1.2.10

{1, 2, 3, 99}

1.3.6.1.4.1.26355.2.50.13.2.1.3.10 String 6 10 11 20 21 30 31 40 41 50 July 2018; Doc No. VHF Signal Booster UM RA Page 93 of 95 WESTELL.COM Appendix A Important Product Information VHF Product Manual July 2018, Rev B A.1 Registration Number FCC NVRPSA41080-VHF A.2 UL This product is UL Listed. 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 94 of 95 WESTELL.COM VHF Product Manual July 2018, Rev B Appendix B Table B-1 contains the acronyms and abbreviations used in this manual, along with a definition for each one. Acronyms and Abbreviations AGC AMPS ARFCN BCCH BS CDMA DC DCS DL DPLX EEPROM EGSM ETACS ETSI WCS GSM HW LED LNA MS OL OMS PA PCN PCS pWOMS PS RF RSSI SW UL WEEE Table B-1: Acronyms and Abbreviations Automatic Gain Control Advanced Mobile Phone Service Absolute Radio Frequency Channel Number Broadcast Control Channel (GSM broadcast channel time slot) Base Station, BS antenna = towards the base station Code Division Multiple Access Direct Current Digital Communication System (same as PCN) Downlink signal direction (from base station via Signal Booster / Master / Remote to mobile station) Duplex filter Electrical Erasable Programmable Read Only Memory Extended Global System for Mobile communication Extended Total Access Communication System European Telecommunications Standard Institute Westell Control Software Global System for Mobile communication Hardware Light Emitting Diode Low Noise Amplifier, uplink and downlink Mobile Station, MS antenna = towards the mobile station Overload Operation and Maintenance System Power Amplifier Personal Communication Network (same as DCS) Personal Communication System Portable Westell Operation and Maintenance Software Power Supply Radio Frequency Received Signal Strength Indication Software Uplink signal direction (from mobile station via Signal Booster / Master / Remote to base station) Waste of Electric and Electronic Equipment 2017 Westell Technologies 1.877.844.4274 July 2018; Doc No. VHF Signal Booster UM RA Page 95 of 95 WESTELL.COM