FCC ID: EW780-4221-00 900 MHz Cordless Phone

VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) VTH1930 Wireless Headset Phone w/IR Remote Dialcard, Corded Dialing Base, and Remote Charge Stand VTH1930 VOLUME FLASH Revision History:

Revision 1 Description Initial Release. Page All Effective Date Aug 14/98 All rights reserved. No part of this document may be reproduced, loaned, or transmitted in any form or by any means without authorization in accordance with Vtech policies and administrative procedures. This document remains the property of Vtech Engineering Canada Ltd., and must be returned upon request. Prepared By Title Approved by Title Ralph Tischler Project Manager Gary Rogalski Engineering Manager Reference: PRC 00B6 Revision: 0 Page: 1 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) CONTENTS 1 2 1.1 1.2 1.3 1.4 2.1 2.2 2.3 OVERVIEW ....................................................................................................................................................... 4 GENERAL DESCRIPTION.............................................................................................................................. 4 REGULATORY STANDARDS ......................................................................................................................... 4 FEATURE LIST ............................................................................................................................................. 4 1.3.1 Basic Features ...................................................................................................................................... 4 1.3.2 Unique Features ................................................................................................................................... 5 1.3.3 Features Not Provided......................................................................................................................... 6 COSMETIC STYLING .................................................................................................................................... 6 1.4.1 The Base Unit Cosmetics.................................................................................................................... 7 1.4.2 Headset Unit Cosmetics ...................................................................................................................... 8 1.4.3 Remote Dialcard Cosmetics................................................................................................................ 9 1.4.4 Remote Charger Cosmetics.............................................................................................................. 10 FUNCTIONAL KEY AND LED INDICATOR DESCRIPTIONS .............................................................. 11 HEADSET LED INDICATORS & KEY DESCRIPTIONS................................................................................. 11 2.1.1 Dual Color LED ................................................................................................................................... 11 2.1.2 Volume Up/Down keys....................................................................................................................... 11 2.1.3 FLASH Key.......................................................................................................................................... 11 2.1.4 Mic Boom............................................................................................................................................. 11 REMOTE DIALCARD LED INDICATORS & KEY DESCRIPTIONS................................................................. 11 2.2.1 PHONE KEY........................................................................................................................................ 11 HOLD KEY ...................................................................................................................................... 11 2.2.2 2.2.3 OFF KEY ......................................................................................................................................... 12 MEM KEY ........................................................................................................................................ 12 2.2.4 2.2.5 INTERCOM KEY ............................................................................................................................ 12 2.2.6 REDIAL KEY ....................................................................................................................................... 12 2.2.7 VOLUME KEY .............................................................................................................................. 12 2.2.8 VOLUME KEY ............................................................................................................................... 12 2.3.9 0 ->9 Numeric Keys.............................................................................................................................. 12 BASE UNIT & CORDED HANDSET LED INDICATORS & KEY DESCRIPTIONS........................................... 12 2.3.1 POWER LED......................................................................................................................................... 12 2.3.2 SPARE BATTERY CHARGE LED ..................................................................................................... 12 2.3.3 HEADSET/EXTENSION IN USE LED ................................................................................................ 12 2.3.4 MESSAGE WAITING LED ................................................................................................................... 13 2.3.5 INTERCOM LED.................................................................................................................................... 13 2.3.6 HOLD LED.............................................................................................................................................. 13 2.3.7 INTERCOM KEY................................................................................................................................. 13 2.3.8 0 ->9 Numeric Keys.............................................................................................................................. 13 2.3.9 */TONE key............................................................................................................................................ 13 2.3.10 # key..................................................................................................................................................... 13 2.3.11 MEM KEY ............................................................................................................................................ 13 2.3.12 REDIAL KEY ....................................................................................................................................... 14 2.3.13 QUICK MEM KEY............................................................................................................................... 14 2.3.14 HOLD KEY........................................................................................................................................... 14 2.3.15 MEM/PROG KEY ........................................................................................................................... 14 2.3.16 Switchook ........................................................................................................................................ 14 2.3.17 Corded Handset VOLUME LOW/MID/HIGH ................................................................................. 14 2.3.18 SPKR RINGER OFF/LOW/HIGH SWITCH ................................................................................... 14 Reference: PRC 00B6 Revision: 0 Page: 2 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 3 4 5 2.4 3.1 3.2 2.3.19 Tone/pulse switch ......................................................................................................................... 14 REMOTE CHARGER LED INDICATORS...................................................................................................... 14 2.4.1 CHARGE STATUS LED ...................................................................................................................... 14 OPERATING MODES .................................................................................................................................... 15 HEADSET & REMOTE DIALCARD UNIT...................................................................................................... 15 3.1.1 Headset Phone Mode (OFF-HOOK)................................................................................................ 15 3.1.2 Headset IDLE Mode, Placed On remote Charger.......................................................................... 16 3.1.3 Headset IDLE Mode, Headset NOT Placed On remote Charger and with the Mic Boom Switch in the DOWN Position ....................................................................................................................... 17 3.1.4 Headset IDLE Mode, Headset NOT Placed On remote Charger and with the Mic Boom Switch in the UP Position............................................................................................................................... 17 3.1.5 Headset in HOLD Mode, OFF Charger, Mic Boom DOWN.......................................................... 18 3.1.6 Headset in HOLD Mode, OFF Charger, Mic Boom UP................................................................. 19 3.1.7 Headset in INTERCOM Mode (Mic Boom must be Down & Base Corded must be Lifted) ..... 19 BASE UNIT................................................................................................................................................. 20 3.2.1 Base Phone Mode (OFF-HOOK), Headset also in PHONE mode.............................................. 20 3.2.2 BASE IDLE Mode, Corded Headset Placed in Cradle, Headset in Idle Mode........................... 21 3.2.3 BASE IDLE Mode, Corded Headset Placed in Cradle, Headset in PHONE Mode ................... 22 3.2.4 BASE in HOLD Mode, Corded Headset in cradle.......................................................................... 22 3.2.5 BASE in HOLD Mode, Corded Headset Picked Up out of Cradle ............................................... 23 3.2.6 Base INTERCOM Mode .................................................................................................................... 24

"SPECIAL" FEATURES & OPERATING MODES ................................................................................... 25 5.1 6.2 6.3 6.3 6.4 6.5 6.6 ELECTRICAL SPECIFICATIONS............................................................................................................... 26 OPERATING CONDITIONS.......................................................................................................................... 26 DC ELECTRICAL CHARACTERISTICS ........................................................................................................ 26 HEADSET AUDIO SPECIFICATIONS............................................................................................................ 27 BASE CORDED AUDIO SPECIFICATIONS ................................................................................................... 28 TELEPHONE LINE INTERFACE SPECIFICATIONS ....................................................................................... 29 RADIO SPECIFICATIONS ............................................................................................................................ 30 FREQUENCY ALLOCATION TABLES ........................................................................................................... 31 6.6.1 Base Unit Frequencies....................................................................................................................... 31 6.6.2 Headset Frequencies......................................................................................................................... 31 Reference: PRC 00B6 Revision: 0 Page: 3 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 1 Overview The following product spec. defines the basic cosmetics, electrical specifications and operating functions & features of the VTH1930 wireless headset phone (WHS). General Description 1.1 The VTH1930 is a wireless headset telephone that is based upon our PDL ADPCM core platform. The headset unit is accompanied with an Infrared dialcard, a dialing base unit with corded handset and a separate headset charging station. This product is intended to address the market segment that is currently using products like our PDL w/wired headset, but desire to have a completely contained headset unit that can be worn for extended periods of time and does not require any type of wired beltpack. Regulatory Standards 1.2 As a requirement for sale in the United States, the product will comply with the electrical specifications defined in the following documents:

FCC Part 15 FCC Part 68 UL 1459 Radio Emmissions Requirements Telephone Line Interface Requirements Safety Requirements As a requirement for sale in Canada, the product will comply with the electrical specifications defined in the following documents:

IC IC CSA 225 RSS-210 CS-03 Radio Emmissions Requirements Telephone Line Interface Requirements Safety Requirements In addition to the above mandatory regulations, the recommendations provided in EIA-470-A, TIA 571, TIA631and IEC801-2 will be used as a design guideline. Feature List 1.3 The following feature lists provide a brief overview of the features that are and are not provided in this unit. 1.3.1 Basic Features 10 channel, 900MHz operation w/32kbps ADPCM voice coding Automatic search for available channel (when handset on cradle) 16 bit digital security code Pulse, DTMF, and temporary DTMF dialling modes 20 number speed dial memory; each number can be up to 16 digits Redial memory (16 digits) 3-AAA NiMH AAA battery pack. Battery charge interval: 6 days in STANDBY mode, 7 hours in PHONE mode Line-drop circuit included Extension in use & no line indication provided Non-volatile storage of speed dial numbers Reference: PRC 00B6 Revision: 0 Page: 4 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Non-volatile storage of security code at base unit protects against power failure In-the-dark answering of incoming calls 1.3.2 Unique Features Headset Binaural Sound using two receivers (non HAC) Headset will be re-chargeable via placement on remote charger. Retractable antenna will be incorporated into headset design. Volume up/down keys available on headset module. Flash key will be available on headset module to switch between lines during a call waiting condition. A CR2025 battery with an estimated lifetime of 1.5 yrs will be provided with remote dialcard and will be easily replaced via a sliding battery door. The effective distance of the dialcard will be over 15 ft. in normal lighting conditions. Under direct sunlight, the range will be limited to 4 ft (enough to allow hand held dialing). A plastic loop at the top of the dialcard chassis will allow for the attachment of an accessory strap to allow the user to hang the unit around the neck, dangle off the wrist, or dangle of a belt clip. 64 different combinations of dialcard security code will be randomized in the factory to prevent interference between different remote dialcards. Corded handset on base will have HI/MID/LOW volume control via slide switch on handset. Base dialing keypad is provided. PPU will be provided for in SW as a future option. The base will be equipped with VMWI as an available option. The base will be equipped with a speaker to indicate ringing, paging & other base status. The unit will include a ringer HI/LO/OFF on the side of the unit for volume adjustment as well as programming of individual ringer types (base only). A tone pulse switch will be accessible on the bottom of the unit. POTS mode will be available on the base via the spare battery. A trickle charging bay will be provided on the base unit (20-30 hours charge time). Remote charger will fully charge headset battery within 2 hours. Remote charger LED will glow red during fast charging, and will go green after the charge is complete. There will be no Power LED indication for the remote charger unit. Headset will automatically turn OFF when placed in remote charging unit, regardless of the mic boom position. Remote charger will have its own 300mAH power adapter which is interchangeable with the base unit power adapter so the end user will not be confused. Headset will ring when in the remote charge and will auto-answer when lifted out of the base cradle only if the mic boom is already in the ON position. Reference: PRC 00B6 Revision: 0 Page: 5 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 1.3.3 Features Not Provided Will not have stutter dial detection. Will not have MUTE function on headset (accomplished by HOLD condition only). Will not have CID display in the base unit (provided in future models). Will not have quick charge capability in the base spare batt charger. Cosmetic Styling 1.4 The following cosmetics renderings depict the proposed styling of the product components:

Reference: PRC 00B6 Revision: 0 Page: 6 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 1.4.1 The Base Unit Cosmetics POWER SPARE BAT EXT IN USE MESSAGE WAITING 1111 4444 7777

****

2222 5555 8888 0000 3333 6666 9999

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IINTERCOM PROGRAM HOLD REDIAL MEMORY QUICK MEM Reference: PRC 00B6 Revision: 0 Page: 7 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 1.4.2 Headset Unit Cosmetics VTH1930 VOLUME FLASH Reference: PRC 00B6 Revision: 0 Page: 8 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 1.4.3 Remote Dialcard Cosmetics Reference: PRC 00B6 Revision: 0 Page: 9 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 1.4.4 Remote Charger Cosmetics Reference: PRC 00B6 Revision: 0 Page: 10 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 2 Functional Key and LED Indicator Descriptions This section will provide a short description of the key and switch functions as well as any LED indicators which may appear on the headset or base units. Headset LED Indicators & Key Descriptions 2.1 2.1.1 Dual Color LED Dual color green/red LED on headset to indicate ON (solid green), Incoming Ringing

(flashing green in cadence w/ringing), Extension or Base in use (flashing green), Low Batt (flashing red), and Out of Range (alternating red/green). 2.1.2 Volume Up/Down keys These keys are used to adjust the headset volume up or down; there will be 8 discrete volume steps with a step size of 3dB each. Press and hold this key changes the handset receiver volume at a rate of one level per half second. There will be DTMF feedback present in the headset earpiece to acknowledge the keypress. Either key will act to temporarily mute the headset ringer during incoming ringing. 2.1.3 FLASH Key This key will act to Flash the telephone line during an off-hook state. Otherwise, activating this key will act to auto-answer a call during incoming ringing. 2.1.4 Mic Boom The Mic boom is a two position switch; in the up position it acts to turn off the headset unit and disables any input from the headset keys or the remote dialcard. In the down position it activates the headset, acts to answer incoming ringing, and allows the headset functions (including off) to be controlled via the remote dialcard. Remote Dialcard LED Indicators & Key Descriptions 2.2 There are no LED indicators on the IR remote dialcard; this is done to eliminate excessive current consumption and extend battery life. 2.2.1 PHONE KEY Press this key to access a LINE. If the headset has already accessed a line, pressing the PHONE key will flash the line. Pressing the PHONE key will cause the unit to immediately access a line from any state or mode the phone is in including hold. 2.2.2 HOLD KEY This key has two functions. Pressing this key when the handset is off hook will place the call on HOLD. Pressing HOLD a second time will cancel hold. Pressing OFF will not cancel hold or end the call Reference: PRC 00B6 Revision: 0 Page: 11 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 2.2.3 OFF KEY Press this key to exit all modes. The OFF key will cause the unit to exit only the mode that the phone is in at the time. 2.2.4 MEM KEY Press this key during the off-hook state to access speed dial numbers. 2.2.5 INTERCOM KEY Pressing the INT.COM key will generate a headset keybeep and send a paging signal to the base causing it to emit a distinctive ring. When in idle mode, the base will ring for a maximum of five times. To end the INTERCOM conversation, the user must press the OFF key or return the mic boom to the UP position. 2.2.6 REDIAL KEY Pressing REDIAL will immediately dial out the last number in the redial buffer. The redial buffer size is 20 digits. During redial, the level of DTMF feedback generated in the earpiece will be attenuated by approx.6 dB from the normal DTMF level generated during live dialing. 2.2.7 VOLUME KEY Each press of this key will increment the headset receiver volume. There are a total of 8 volume level settings. Pressing the volume up key during incoming ringing will activate temporary ringer muting. Pressing a volume key will not generate a keybeep. 2.2.8 VOLUME KEY This key operates the same as above except to decrement the headset receiver volume. 2.3.9 0 ->9 Numeric Keys In DTMF mode, pressing these keys will result in the appropriate DTMF tone being sent out over the line. In PULSE mode, pressing these keys will result in the appropriate pulse pattern being sent out over the line; A beep is heard from the headset. Base Unit & Corded Handset LED Indicators & Key Descriptions 2.3 2.3.1 POWER LED This LED illuminates when the base power adapter is plugged in and power is applied to the base unit. 2.3.2 SPARE BATTERY CHARGE LED The Spare battery charge LED illuminates steadily when the spare battery is placed into the base charging compartment. 2.3.3 HEADSET/EXTENSION IN USE LED This LED flashes when the headset is off hook or when a parallel extension is picked up. Reference: PRC 00B6 Revision: 0 Page: 12 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 2.3.4 MESSAGE WAITING LED This LED will flash whenever the base has received a VMWI signal from the C.O.. It will remain in this state until either the cancel VMWI signal is received from the C.O. or the base unit power is removed.. 2.3.5 INTERCOM LED This LED will illuminate whenever INTERCOM mode is active. 2.3.6 HOLD LED This LED will illuminate whenever a call is placed on hold; it does not matter whether the hold condition was initiated from the headset or the base. 2.3.7 INTERCOM KEY Pressing the INT.COM key will generate a base keybeep and send a paging signal to the headset causing it to emit a distinctive ring. When in idle mode, the headset will ring for a maximum of five times. To end the INTERCOM conversation, the user presses INT.COM on the base or OFF on the handset. If the handset is in PHONE mode when the base pages it, the handset will generate a long, soft non-

intrusive ringing tone. 2.3.8 0 ->9 Numeric Keys In DTMF mode, pressing these keys will result in the appropriate DTMF tone being sent out over the line. If the key is held then the tone is continuously sent. In PULSE mode, pressing these keys will result in the appropriate pulse pattern being sent out over the line. A beep is heard from the base. 2.3.9 */TONE key When the TONE/PULSE switch on the base is in the PULSE position, pushing this key will change the outgoing numbers from PULSE to DTMF for the duration of the call. In TONE mode, this sends out the DTMF tone for *. 2.3.10 # key In DTMF mode, pressing this key sends out an appropriate DTMF tone for #. In PULSE mode, this key is inactive. 2.3.11 MEM KEY This key is used for recalling phone numbers stored in speed dial memory. To dial a number stored in speed dial memory:

1.) Press SPEAKERPHONE to get a dial tone. 2.) Press MEM and the number key (00..20). The number stored is dialed out - e.g. 555-1234. Location 00 is shared with the QUICKMEM key and can be accessed by pressing the QUICKMEM key or by entering speed dial location 00. MEM dialing numbers can only be programmed from the handset. Reference: PRC 00B6 Revision: 0 Page: 13 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 2.3.12 REDIAL KEY This automatically dials the last number dialed out from the base unit. To use the REDIAL, the user first goes off and then presses REDIAL. Pressing REDIAL will generate a base keybeep. 2.3.13 QUICK MEM KEY Pressing this key when in phone mode will dial out the contents of MEM location 00. 2.3.14 HOLD KEY This puts the line on hold when in PHONE mode. Pressing HOLD will generate a base keybeep. 2.3.15 MEM/PROG KEY Beginning from idle mode, press and hold this to enter PROGRAM mode. An acknowledgment keybeep will accompany this action. 2.3.16 Switchook Lifting the corded base out of the cradle will activate phone mode on the base unit;

depressing the switchook for the correct duration will flash the line 2.3.17 Corded Handset VOLUME LOW/MID/HIGH The base corded handset volume can be adjusted by selecting the slide switch mounted to the side of the handset to the low, mid, or high position. There will be a 6 dB difference in the volume levels. 2.3.18 SPKR RINGER OFF/LOW/HIGH SWITCH Sets the baseset ringer to the HIGH, LOW or OFF state. 2.3.19 Tone/pulse switch This switch controls whether the unit will dial out using DTMF tones or using pulse dialing. The factory default position is DTMF dialing. Remote Charger LED Indicators 2.4 2.4.1 CHARGE STATUS LED When the headset is not sitting on the remote charger, the Charge status LED will be OFF. During Quick Charging the charge status LED will glow RED. Once the headset battery has attained full charge, the charge status LED will Glow GREEN to indicate that the headset is fully charged and ready to use. Reference: PRC 00B6 Revision: 0 Page: 14 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 3 Operating Modes The following section will outline in detail the operation of the product in particular modes in accordance to various stimuli. Some sections will describe the operation of various elements in response to different operating modes. Headset & Remote Dialcard Unit 3.1 The headset and the Remote dialcard operation will be grouped together since the remote dialcard is simply and Infrared extension of the headset. 3.1.1 The headset can enter PHONE mode (OFF-HOOK) in the following manner :

- Moving the mic boom switch to the extended or down position will always activate PHONE Headset Phone Mode (OFF-HOOK)

- With the mic boom in the down position, and the unit in an ON-HOOK state, pressing the PHONE key on the dialcard will always activate PHONE mode.

- When incoming ringing is present, pressing any key on the headset or dialcard with the exception of the volume up/down keys will activate PHONE mode. mode. The response to stimuli while in PHONE mode is outlined below:

Remote Dialcard Action OFF KEY PHONE KEY HOLD KEY INTERCOM MEM REDIAL VOLUME UP/DOWN

# KEYS Response ON-HOOK FLASH LINE ON-HOLD NO ACTION (no Keybeep) ACCEPT MEM LOCATION DIAL OUT CONTENTS OF REDIAL BUFFER INCREMENT/DECREMENT VOLUME SETTING (no keybeep) DIAL OUT CORRESPONDING DTMF OR PULSE DIGITS

(except * key activates temporary tone in pulse mode) Headset Action MIC BOOM TO UP POSITION FLASH KEY VOLUME UP/DOWN Response ON-HOOK FLASH LINE INCREMENT/DECREMENT VOLUME SETTING (no keybeep) Reference: PRC 00B6 Revision: 0 Page: 15 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Base Action CORDED HANDSET LIFTED SWITCH HOOK FLASHED HOLD KEY INTERCOM MEM REDIAL QUICK MEM PROGRAM

# KEYS Response CORDED HANDSET OFF-HOOK NO ACTION ON-HOLD NON-INTRUSIVE PAGING TO HEADSET ACCEPT MEM LOCATION DIAL OUT CONTENTS OF REDIAL BUFFER DIAL OUT CONTENTS OF MEM LOCATION 00 NO ACTION DIAL OUT CORRESPONDING DTMF OR PULSE DIGITS

(except * key activates temporary tone in pulse mode) Other Stimuli PLACE HEADSET ON CHARGER Response ON-HOOK Headset IDLE Mode, Placed On remote Charger 3.1.2 The response to stimuli of the headset while in idle mode and resting on the remote charger is outlined below:

Remote Dialcard Action VOLUME UP/DOWN ALL KEYS Headset Action MIC BOOM TO UP/DOWN POSITION FLASH KEY VOLUME UP/DOWN Base Action INTERCOM ALL OTHER KEYS Other Stimuli REMOVE HEADSET FROM CHARGER MIC BOOM UP REMOVE HEADSET FROM CHARGER MIC BOOM DOWN BASE PAGING HEADSET INCOMING RINGING Response TEMPORARY HEADSET RINGER MUTING DURING INCOMING RINGING NO ACTION NO ACTION Response NO ACTION TEMPORARY HEADSET RINGER MUTING DURING INCOMING RINGING Response PAGING TO HEADSET NO ACTION Response NO ACTION NO ACTION EXCEPT DURING INCOMING RI NGING WILL AUTO ANSWER AND ENTER PHONE MODE INTERCOM MODE CANNOT BE ENTERED ON REMOTE CHARGER PHONE MODE CANNOT BE ENTERED ON REMOTE CHARGER Reference: PRC 00B6 Revision: 0 Page: 16 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 3.1.3 Headset IDLE Mode, Headset NOT Placed On remote Charger and with the Mic Boom Switch in the DOWN Position The response to stimuli of the headset while in idle mode, NOT resting on the remote charger and with the mic boom down is outlined below:

Remote Dialcard Action PHONE KEY OFF KEY HOLD KEY INTERCOM MEM REDIAL VOLUME UP/DOWN

# KEYS Headset Action MIC BOOM TO UP POSITION FLASH KEY VOLUME UP/DOWN Response OFF-HOOK NO ACTION (No Keybeep) NO ACTION (No Keybeep) PAGING TO BASE NO ACTION (No Keybeep) NO ACTION (No Keybeep) NO ACTION (No Keybeep) EXCEPT TEMPORARY HEADSET RINGER MUTING DURING INCOMING RINGING NO ACTION (No Keybeep) Response NO ACTION (No Keybeep) NO ACTION (No Keybeep) NO ACTION (No Keybeep) EXCEPT TEMPORARY HEADSET RINGER MUTING DURING INCOMING RINGING Base Action INTERCOM ALL OTHER KEYS Other Stimuli BASE PAGING HEADSET INCOMING RINGING Response PAGING TO HEADSET NO ACTION Response ONLY INTERCOM KEY WILL INITIATE INTERCOM MODE ALL HEADSET AND REMOTE DIALCARD KEYS WILL ANSWER CALL, EXCEPT FOR VOLUME UP/DOWN KEYS. 3.1.4 Headset IDLE Mode, Headset NOT Placed On remote Charger and with the Mic Boom Switch in the UP Position The response to stimuli of the headset while in idle mode, NOT resting on the remote charger and with the mic boom up is outlined below:

Remote Dialcard Action ALL KEYS NO ACTION (No Keybeep) Response Reference: PRC 00B6 Revision: 0 Page: 17 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Headset Action MIC BOOM TO DOWN POSITION FLASH KEY VOLUME UP/DOWN Base Action INTERCOM ALL OTHER KEYS Other Stimuli BASE PAGING HEADSET INCOMING RINGING OFF-HOOK Response NO ACTION (No Keybeep) NO ACTION (No Keybeep) EXCEPT TEMPORARY HEADSET RINGER MUTING DURING INCOMING RINGING Response PAGING TO HEADSET NO ACTION Response MOVING MIC BOOM TO THE DOWN POSITION WILL INITIATE INTERCOM MODE ONLY MOVING MIC BOOM TO DOWN POSITION WILL ANSWER CALL & INITIATE PHONE MODE 3.1.5 Headset in HOLD Mode, OFF Charger, Mic Boom DOWN HOLD mode is initiated by pressing the HOLD key while the headset is in PHONE mode. The response to stimuli of the headset while in HOLD mode is outlined below:

Remote Dialcard Action PHONE KEY OFF KEY HOLD KEY INTERCOM MEM REDIAL VOLUME UP/DOWN

# KEYS Response PHONE MODE NO ACTION (No Keybeep) PHONE MODE PAGES BASE NO ACTION (No Keybeep) NO ACTION (No Keybeep) INCREMENT/DECREMENT VOLUME SETTING NO ACTION (No Keybeep) Headset Action MIC BOOM TO UP POSITION FLASH KEY VOLUME UP/DOWN Response NO ACTION (No Keybeep) NO ACTION (No Keybeep) INCREMENT/DECREMENT VOLUME SETTING Base Action INTERCOM ALL OTHER KEYS Response PAGING TO HEADSET NO RELATED HEADSET ACTION Reference: PRC 00B6 Revision: 0 Page: 18 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 3.1.6 Headset in HOLD Mode, OFF Charger, Mic Boom UP The response to stimuli of the headset while in HOLD mode is outlined below:

Remote Dialcard Action ANY KEY NO ACTION Response Headset Action MIC BOOM TO DOWN POSITION FLASH KEY VOLUME UP/DOWN Base Action INTERCOM ALL OTHER KEYS HEADSET OFF-HOOK, CANCEL HOLD CONDITION Response NO ACTION (No Keybeep) INCREMENT/DECREMENT VOLUME SETTING Response PAGING TO HEADSET NO RELATED HEADSET ACTION 3.1.7 Headset in INTERCOM Mode (Mic Boom must be Down & Base Corded must be Lifted) INTERCOM mode is entered by pressing the INTERCOM key on the headset to page the base;

if the base answers the page, then INTERCOM mode is enabled. INTERCOM mode can be entered while in the IDLE or HOLD state. The response to stimuli of the headset while in INTERCOM mode is outlined below:

Remote Dialcard Action PHONE KEY OFF KEY HOLD KEY INTERCOM MEM REDIAL VOLUME UP/DOWN

# KEYS Response PHONE MODE EXIT INTERCOM & RETURN TO PREVIOUS MODE NO ACTION (No Keybeep) NO ACTION (No Keybeep) NO ACTION (No Keybeep) NO ACTION (No Keybeep) INCREMENT/DECREMENT VOLUME SETTING NO ACTION (No Keybeep) Headset Action MIC BOOM TO UP POSITION FLASH KEY VOLUME UP/DOWN Response EXIT INTERCOM & ENTER IDLE MODE NO ACTION (No Keybeep) INCREMENT/DECREMENT VOLUME SETTING Reference: PRC 00B6 Revision: 0 Page: 19 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Base Action INTERCOM RETURN BASE CORDED TO CRADLE QUICK MEM ALL OTHER KEYS Other Stimuli INCOMING RINGING Response NO ACTION (No Keybeep) EXIT INTERCOM & RETURN TO PREVIOUS MODE EXIT INTERCOM, ENTER PHONE MODE AND DIAL OUT QUICK MEM DIGITS NO ACTION (No Keybeep) Response HEADSET WILL RING & REMAIN IN INTERCOM MODE Base Unit 3.2 3.2.1 Base Phone Mode (OFF-HOOK), Headset also in PHONE mode The base can enter PHONE mode (OFF-HOOK) by lifting the corded handset out of its cradle, except during Headset PAGING (which initiates INTERCOM mode). The response to stimuli while in PHONE mode is outlined below:

Base Action CORDED HANDSET RECRADLED SWITCH HOOK FLASHED HOLD KEY INTERCOM MEM REDIAL QUICK MEM PROGRAM

# KEYS Response BASE EXITS PHONE MODE LINE FLASH (except when headset is in PHONE mode) ON-HOLD NO ACTION (no keybeep) ACCEPT MEM LOCATION DIAL OUT CONTENTS OF REDIAL BUFFER DIAL OUT CONTENTS OF MEM LOCATION 00 NO ACTION DIAL OUT CORRESPONDING DTMF OR PULSE DIGITS

(except * key activates temporary tone in pulse mode) Remote Dialcard Action OFF KEY PHONE KEY HOLD KEY INTERCOM MEM REDIAL VOLUME UP/DOWN

# KEYS Response HEADSET EXIT PHONE MODE PHONE MODE - NO LINE FLASH ON-HOLD NON INTRUSIVE PAGING TONE AT BASE ACCEPT MEM LOCATION FROM B/S OR HEADSET DIAL OUT CONTENTS OF REDIAL BUFFER INCREMENT/DECREMENT VOLUME SETTING (no keybeep) DIAL OUT CORRESPONDING DTMF OR PULSE DIGITS

(except * key activates temporary tone in pulse mode) Headset Action Response Reference: PRC 00B6 Revision: 0 Page: 20 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) MIC BOOM TO UP POSITION FLASH KEY VOLUME UP/DOWN HEADSET EXIT PHONE MODE NO LINE FLASH INCREMENT/DECREMENT VOLUME SETTING (no keybeep) 3.2.2 BASE IDLE Mode, Corded Headset Placed in Cradle, Headset in Idle Mode The base is always in idle mode when the corded headset is placed in the base cradle. The response to stimuli while in IDLE mode is outlined below:

Base Action CORDED HANDSET LIFTED SWITCH HOOK FLASHED HOLD KEY INTERCOM MEM REDIAL QUICK MEM PROGRAM

# KEYS Remote Dialcard Action INTERCOM ALL OTHER KEYS Headset Action ALL KEYS & SWITCH Other Stimuli HEADSET PAGING BASE INCOMING RINGING Response BASE PHONE MODE N/A NO ACTION (no keybeep) NO ACTION (no keybeep) NO ACTION (no keybeep) NO ACTION (no keybeep) NO ACTION (no keybeep) PROGRAM MODE NO ACTION (no keybeep) Response BASE PAGING NO RELEVANT ACTION FOR HEADSET IDLE MODE NO RELEVANT ACTION FOR HEADSET IDLE MODE Response Response LIFT CORDED HEADSET TO INITIATE INTERCOM MODE LIFT CORDED HEADSET TO INITIATE INTERCOM MODE Reference: PRC 00B6 Revision: 0 Page: 21 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 3.2.3 BASE IDLE Mode, Corded Headset Placed in Cradle, Headset in PHONE Mode The base is always in idle mode when the corded headset is placed in the base cradle. The response to stimuli while in IDLE mode with the headset in PHONE Mode is outlined below:

Base Action CORDED HANDSET LIFTED SWITCH HOOK FLASHED HOLD KEY INTERCOM MEM REDIAL QUICK MEM PROGRAM

# KEYS Response BASE PHONE MODE N/A ON HOLD NO ACTION (no keybeep) ACCEPT MEM LOCATION DIAL OUT CONTENTS OF REDIAL BUFFER DIAL OUT CONTENTS OF MEM LOCATION 00 NO ACTION (no keybeep) DIAL OUT CORRESPONDING DTMF OR PULSE DIGITS

(except * key activates temporary tone in pulse mode) Remote Dialcard Action ALL KEYS NO RELATED BASE ACTION Response Headset Action ALL KEYS NO RELATED BASE ACTION Response 3.2.4 BASE in HOLD Mode, Corded Headset in cradle Hold mode can be initiated from either the headset or base unit by pressing the pressing the HOLD key when either the base or headset is in PHONE mode. The following describes the reponse to stimuli when the base is in HOLD Mode:

Base Action CORDED HANDSET PICKED UP SWITCH HOOK FLASHED INTERCOM MEM REDIAL QUICK MEM PROGRAM

# KEYS Response HOLD CANCELLED - BASE PHONE MODE N/A NO ACTION (no keybeep) NO ACTION (no keybeep) NO ACTION (no keybeep) NO ACTION (no keybeep) PROGRAM MODE NO ACTION (no keybeep) Reference: PRC 00B6 Revision: 0 Page: 22 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Remote Dialcard Action PHONE KEY HOLD KEY INTERCOM ALL OTHER KEYS Response HOLD CANCELLED - HEADSET PHONE MODE (boom down) HOLD CANCELLED - HEADSET PHONE MODE (boom down) BASE PAGING NO RELATED BASE ACTION Headset Action MIC BOOM TO DOWN POSITION FLASH KEY VOLUME UP/DOWN Other Stimuli HEADSET PAGING BASE HOLD CANCELLED - HEADSET PHONE MODE Response NO ACTION (no keybeep) NO ACTION Response LIFT CORDED HEADSET TO INITIATE INTERCOM MODE 3.2.5 BASE in HOLD Mode, Corded Headset Picked Up out of Cradle Hold mode can be initiated from either the headset or base unit by pressing the pressing the HOLD key when either the base or headset is in PHONE mode. The following describes the reponse to stimuli when the base is in HOLD Mode, with the corded headset picked up out of the base cradle:

Base Action CORDED HANDSET RECRADLED SWITCH HOOK FLASHED HOLD KEY INTERCOM MEM REDIAL QUICK MEM PROGRAM

# KEYS Response NO ACTION (no keybeep) HOLD CANCELLED - BASE PHONE MODE HOLD CANCELLED - BASE PHONE MODE HEADSET PAGING NO ACTION (no keybeep) NO ACTION (no keybeep) NO ACTION (no keybeep) NO ACTION NO ACTION (no keybeep) Remote Dialcard Action PHONE KEY HOLD KEY INTERCOM ALL OTHER KEYS Response HOLD CANCELLED - HEADSET PHONE MODE (boom down) HOLD CANCELLED - HEADSET PHONE MODE (boom down) BASE PAGING NO RELATED BASE ACTION Headset Action MIC BOOM TO DOWN POSITION FLASH KEY VOLUME UP/DOWN HOLD CANCELLED - HEADSET PHONE MODE Response NO ACTION (no keybeep) NO ACTION Reference: PRC 00B6 Revision: 0 Page: 23 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Other Stimuli HEADSET PAGING BASE Response PRESS INTERCOM TO INITIATE INTERCOM MODE 3.2.6 Base INTERCOM Mode The base can enter INTERCOM Mode by paging the headset (press INTERCOM key) and having the headset answer the page to initiate INTERCOM. The base can also enter INTERCOM mode in the opposite manner by answering a page from the Headset. The corded handset is always lifted during INTERCOM mode. The response to stimuli while in INTERCOM mode is outlined below:

Base Action CORDED HANDSET RECRADLED SWITCH HOOK FLASHED HOLD KEY INTERCOM MEM REDIAL QUICK MEM PROGRAM

# KEYS Response EXIT INTERCOM MODE EXIT INTERCOM MODE - BASE PHONE MODE ACTIVE NO ACTION (no keybeep) EXIT INTERCOM MODE NO ACTION (no keybeep) NO ACTION (no keybeep) EXIT INTERCOM, ENTER PHONE MODE AND DIAL OUT QUICK MEM DIGITS NO ACTION (no keybeep) NO ACTION (no keybeep) Remote Dialcard Action OFF KEY PHONE KEY HOLD KEY INTERCOM MEM REDIAL VOLUME UP/DOWN

# KEYS Headset Action MIC BOOM TO UP POSITION FLASH KEY VOLUME UP/DOWN Response EXIT INTERCOM MODE - RETURN TO PREVIOUS MODE EXIT INTERCOM MODE - PHONE MODE NO ACTION (no keybeep) EXIT INTERCOM MODE NO ACTION (no keybeep) NO ACTION (no keybeep) INCREMENT/DECREMENT VOLUME SETTING (no keybeep) NO ACTION (no keybeep) Response EXIT INTERCOM MODE NO ACTION (no keybeep) INCREMENT/DECREMENT VOLUME SETTING (no keybeep) Other Stimuli INCOMING RINGING Response BASE WILL RING & REMAIN IN INTERCOM MODE Reference: PRC 00B6 Revision: 0 Page: 24 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 4 "Special" Features & Operating Modes This section is also used to describe any special hardware or software features that do not fall under the description of a particular mode. Reference: PRC 00B6 Revision: 0 Page: 25 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) 5 Electrical Specifications 5.1 Operating Conditions Parameter Operating Temperature Range Base Unit Operating Voltage (AC Voltage, 60Hz) Base Unit Operating Voltage (AC Adapter Output) Handset Operating Voltage2 Min 0 96 3.2 Typ 251 1201 91 3.61 Max 50 144 4.2 Units C Vrms Vdc Vdc Notes:

1. Typical value represents the nominal testing value 2. Handset operates from a 3-cell NiMH Battery DC Electrical Characteristics 6.2 Specifications marked with * are guaranteed at the nominal testing temperature and voltage on all units with the use of automated production test equipment (ATE) Min Parameter Max

* Base Unit Current - Standby Mode1,2

* Base Unit Current - Talk Mode1,2 Handset Current - Sleep Mode

* Handset Current - Wake Mode

* Handset Current - Talk Mode

* Handset Sleep Duration - Standby Mode Handset Wake Duration - Standby Mode

* Low Battery Detection Threshold (HS)

* MCU Shutdown Threshold (HS) Handset Standby Time Handset Continuous Talk Time Typ TBD TBD 1 52 3 70 101 1150 60 Units mA mA mA mA mA ms ms Vdc Vdc Days Hours 45 65 750 3.4 3.2 6 7 3.3 1.7

* Loaded Cradle Charge Contact Voltage3

* Loaded Spare Battery Charge Contact Voltage3 Notes:

1. DC current from 9v power supply 2. Cradle and spare battery charge currents = 0mA 3. Voltage measured across a 50 charge circuit load resistor 4.3 2.5 V V Reference: PRC 00B6 Revision: 0 Page: 26 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Headset Audio Specifications 6.3 Specifications marked with * are guaranteed at the nominal testing temperature and voltage on all units with the use of automated production test equipment (ATE) Min Parameter Max

* Transmit Objective Loudness Rating (TOLR)1

* Receive Objective Loudness Rating (ROLR)1,2

* Sidetone Objective Loudness Rating (SOLR)3

* Receive volume adjustment range

* Transmit Direction Acoustic Overload (into microphone)4 Typ TBD TBD TBD TBD TBD Units dB dB dB dB dBspl

* Receive Direction Acoustic Overload (from receiver)4 TBD Transmit Direction Noise5 Receive Direction Noise2,5 Peak Acoustic Pressure6 dBspl dBrnC dB(A) dBspl 20 35 TBD Notes:

1. Tested using 0kft of simulated telephone line 2. Tested at normal (low) volume level 3. Base unit connected to 0kft of simulated telephone line terminated with 900 4. Acoustic level that results in 5% THD, measured at 1kHz through a 5kHz lowpass filter 5. Handset isolated from sound input and mechanical disturbances 6. Tested at high volume level Reference: PRC 00B6 Revision: 0 Page: 27 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Parameter Base Corded Audio Specifications 6.3 Specifications marked with * are guaranteed at the nominal testing temperature and voltage on all units with the use of automated production test equipment (ATE) Min

-40 51

+3

* Transmit Objective Loudness Rating (TOLR)1

* Receive Objective Loudness Rating (ROLR)1,2

* Sidetone Objective Loudness Rating (SOLR)3

* Receive volume adjustment range

* Transmit Direction Acoustic Overload (into Units dB dB dB dB dBspl Typ

-46

+46

+8 TBD Max

-53 41

+19 microphone)4

* Receive Direction Acoustic Overload (from receiver)4 Transmit Direction Noise5 Receive Direction Noise2,5 Peak Acoustic Pressure6 105 105 dBspl dBrnC dB(A) dBspl 20 35 130 Notes:

1. Tested using 0kft of simulated telephone line 2. Tested at normal (low) volume level 3. Base unit connected to 0kft of simulated telephone line terminated with 900 4. Acoustic level that results in 5% THD, measured at 1kHz through a 5kHz lowpass filter 5. Handset isolated from sound input and mechanical disturbances 6. Tested at high volume level Reference: PRC 00B6 Revision: 0 Page: 28 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Parameter Telephone Line Interface Specifications 6.4 Specifications marked with * are guaranteed at the nominal testing temperature and voltage on all units with the use of automated production test equipment (ATE) Min

-1.5

-7.5

-5.5

-5.0

-3.0 Units Typ

* DTMF Frequency Tolerance

* DTMF Low Group Tone Level1

* DTMF High Group Tone Level1 DTMF Combined Tone Level1 DTMF High Group Preemphasis (Twist) Pulse Dialling Break Duration Pulse Dialling Make Duration Pulse Dialling Rate Ring Detection Frequency2,3 Ring Response Voltage3 Ring No-Response Voltage4 Max

+1.5

-4.0

-2.0

+2.0 4.0

%

dBm dBm dBm dB ms ms pps Hz Vrms Vrms 2.0 60 40 10 15 40 68 15 Notes:

1. Measured across a 900 terminating impedance 2. The ringer must ring with signals within this range 3. Measured with a frequency of 20Hz 4. The ringer must not ring with signals within this range Reference: PRC 00B6 Revision: 0 Page: 29 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Radio Specifications 6.5 Specifications marked with * are guaranteed at the nominal testing temperature and voltage on all units with the use of automated production test equipment (ATE) Min Units Max Parameter Number of RF Duplex Channels1 Duplex Frequency RF Channel Spacing RF Bandwidth2 IF Frequency Base Unit Transmission Frequency Headset Transmission Frequency Transmitter Frequency Stability (over temperature range)

* Base FSK Peak Deviation - Data

* Headset FSK Peak Deviation - Data

* Receiver Sensitivity - 30dB SINAD3 Adjacent Channel Rejection4 Image Rejection4

* Clear Channel Detection Level Notes:

Typ 10 22.75 300 150 10.70 50 50

-106 905.0 0 927.7 5

+10 60 60

-80 902.3 0 925.0 5

-10 40 40

-105 55 65

-100

-

MHz kHz kHz MHz MHz MHz kHz kHz kHz dBm dB dB dBm 1. A duplex channel includes 1 base to handset link and 1 handset to base link 2. 3dB bandwidth of IF filter 3. Measured through a CCITT audio weighting filter 4. RF level of desired signal set to provide 25dB SINAD (CCITT); rejection is relative level of interference signal above desired signal to reduce SINAD to 20dB

(CCITT) Reference: PRC 00B6 Revision: 0 Page: 30 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146 VTECH ENGINEERING CANADA LTD. TITLE MODEL Product Specification VTH1930 (Wireless Headset Phone) Frequency Allocation Tables 6.6 The RF channels for the 910ADL are allocated in fixed pairs as indicated in the tables below. The duplex frequency is maintained at a fixed 22.75MHz for all 10 channels. 6.6.1 Base Unit Frequencies Channel #

1 2 3 4 5 6 7 8 9 10 6.6.2 Headset Frequencies Channel #

1 2 3 4 5 6 7 8 9 10 Transmit Frequency 902.30 MHz 902.60 MHz 902.90 MHz 903.20 MHz 903.50 MHz 903.80 MHz 904.10 MHz 904.40 MHz 904.70 MHz 905.00 MHz Transmit Frequency 925.05 MHz 925.35 MHz 925.65 MHz 925.95 MHz 926.25 MHz 926.55 MHz 926.85 MHz 927.15 MHz 927.45 MHz 927.75 MHz Receive Frequency 925.05 MHz 925.35 MHz 925.65 MHz 925.95 MHz 926.25 MHz 926.55 MHz 926.85 MHz 927.15 MHz 927.45 MHz 927.75 MHz Receive Frequency 902.30 MHz 902.60 MHz 902.90 MHz 903.20 MHz 903.50 MHz 903.80 MHz 904.10 MHz 904.40 MHz 904.70 MHz 905.00 MHz Rx LO Frequency 914.35 MHz 914.65 MHz 914.95 MHz 915.25 MHz 915.55 MHz 915.85 MHz 916.15 MHz 916.45 MHz 916.75 MHz 917.05 MHz Rx LO Frequency 913.00 MHz 913.30 MHz 913.60 MHz 913.90 MHz 914.20 MHz 914.50 MHz 914.80 MHz 915.10 MHz 915.40 MHz 915.70 MHz Reference: PRC 00B6 Revision: 0 Page: 31 of 31 This document is proprietary to VTECH ENGINEERING CANADA LTD. Specifications are preliminary and are subject to change without notice. 21146