FCC ID: P27OT221 Dual Band ONT

GETTING TO KNOW YOU DEVICE Package contents Customer Premise Equipment-ONT AOT-4221SR unit 12V2A power supply Quick Installation Guide RJ45 Ethernet cable RJ11 Telephone cable Fiber cable Device outlook LED indicatorsLED White Solid White Dim Green Blinking Pink Blinking Red Solid Status Internet up with active connection Internet up with no active connection User connecting to Router Starting WPS function Internet Down SETTING UP THE CUSTOMER PREMISE EQUIPMENT-ONT Check the device and note the Wii SSID/password information from the label on the back of unit. Position the Customer Premise Equipment-ONT on a desktop. Make sure you leave enough space around the unit for ventilation and access to the cables. Ensure the connectivity as shown in the picture below. After power up, the System LED lights up as Amber color. CONFIGURING THE DEVICE Connect the device to your computer. On the computer, launch the web browser (e.g. Internet Explorer) and enter the following IP address in the URL bar:

https://192.168.225.1 When prompted, enter the default Username (

press Login to access to admin admin

) and Password (

) and TECHNICAL SPECIFICATION Environmental Conditions Temperature: -5C to 45C Humidity: 5% to 95%

DECLARATION OF CONFORMITY This product must not be disposed of as normal household waste, in accordance with the EU directive for waste electrical and electronic equipment (WEEE2 - 2012/19/EU). Instead, it should be disposed of by returning it to the point of sale, or to a designated recycling collection point. The product does not contain any Hazardous substances as listed in 2011/65/EU+(EU)2015/863 RoHS Directive. FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. To assure continued compliance, any changes or modiications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. FCC Radiation Exposure Statement This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and

(2) This device must accept any interference received, including interference that may cause undesired operation. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. 5 5 957DFV00AD Quick start Guide

61.3mm R2.5x4 Product Description: Customer Premise Equipment - ONT Model Number: AOT-4221SR Item code: CPE000412 Input:12V 2A FCC ID: P27OT221 28.5mm Arial 6.4 Made in China 2.5x2.5 Product Description: Customer Premise Equipment - ONT Model Number: AOT-4221SR Item code: CPE000412 Input:12V 2A FCC ID: P27OT221 1.50#mylar 2.1UV 3.+0/-0.2mm 4.ROHS 5.Wetting tension>=32dyne/cm T N O i

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61.3mm R2.5x4 Product Description: Dual Band ONT Input:12V 2A FCC ID: P27OT221 Arial 6 Arial 5 28.5mm Model Number: AOT-4221SR Made in China 2.5x2.5 1.50#mylar 2.1UV 3.+0/-0.2mm 4.ROHS 5.Wetting tension>=32dyne/cm AOT-4221SR 932DFV01AD 2020.11.09

Description of Permissive Change Federal Communications Commission Authorization and Evaluation Date: 2021/03/29 Division Ref: Description of Permissive Change Applicant: Sercomm Corporation Dear Examiner, This is to request a Class III permissive change for Sercomm Corporation, FCC ID: P27OT221 to add U-NII-2A and U-NII-2C for SDR Product. No modification to the previously type approved RF circuit was required to accommodate this change. Just change the Label and Product Name from Subscriber End Equipment HGW to Dual Band ONT. For reference, original FCC grant was issues on 10/26/2020 and 12/07/2020 for CIIIPC. If you have any questions regarding this application, please feel free to contact me. Print Name: Nick Wu Title: Senior Engineer Email: nick_wu@sercomm.com Company: Sercomm Corporation Sign by:

AGENCY AUTHORIZATION LETTER Date: 2021.03.29 FCC ID: P27OT221 We, the undersigned, hereby authorize MRT Technology (Suzhou) Co., Ltd to act on our behalf, to act on our behalf in all manners relating to FCC approval of our products: report submittal, related correspondence, the signing of all documents relating to these matters, and any other lawful activity necessary to obtain such certification. Any act carried out by MRT Technology (Suzhou) Co., Ltd within the scope of this authorization shall have the same effects as our own. Name Representative of agent:

Marlin Chen Agent Company name:

MRT Technology (Suzhou) Co., Ltd D8 Building, Youxin Industrial Park, No.2 Tian'edang Rd., Wuzhong Economic Development Zone, Suzhou China If you have any questions regarding the authorization, please dont hesitate to contact us. Address:

City:

Country:

Sincerely yours, Print Name: Nick Wu Title: Senior Engineer Email: nick_wu@sercomm.com Company: Sercomm Corporation Sign by:

Date: 2021.03.29 Federal Communications Commission Authorization and Evaluation Division FCC ID: P27OT221 Confidentiality Request Pursuant to FCC 47 CRF 0.457(d) and 0.459, Section 10, Sercomm Corporation requests that a part of the subject FCC application listed below be held permanently confidential and permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Operational Description Further, the Applicant has spent substantial effort in developing this product, some aspects of which are deemed to be trade secret and proprietary. Having the subject information easily available to our competitors in this market would negate the advantage we have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Sincerely yours, Sign by:

Print Name: Nick Wu Title: Senior Engineer Email: nick_wu@sercomm.com Company: Sercomm Corporation

Declaration of Authorization We Name:

Address:

Declare that:

Sercomm Corporation 8F, No. 3-1, YuanQu St., NanKang, Taipei 115, Taiwan, R.O.C. Name Representative of agent:

Marlin Chen Agent Company name:

MRT Technology (Suzhou) Co., Ltd Address:

D8 Building, Youxin Industrial Park, No.2 Tian'edang Rd., Wuzhong Economic Development Zone, City:

Country Suzhou China is authorized to apply for Certification of the following product(s):

Product description: Subscriber End Equipment HGW Type designation:

AOT-4221SR FCC ID:

Trademark:

P27OT221 Airtel on our behalf. September 14, 2020 Name:

Nick Wu Signature:

Date:

Date: December 1, 2020 Federal Communications Commission Authorization and Evaluation Division FCC ID: P27OT221 Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, we hereby request confidential treatment of information accompanying this application as outlined below:

1. Operation Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely,

Name: Nick Wu Sercomm Corporation

Description of Permissive Change Federal Communications Commission Authorization and Evaluation Date: 2020/11/11 Division Ref: Description of Permissive Change Applicant: Sercomm Corporation Dear Examiner, This is to request a Class III permissive change for Sercomm Corporation, FCC ID: P27OT221 to enable U-NII-1 and U-NII-3 channels 802.11 n/ac beamforming function. No modification to the previously type approved RF circuit was required to accommodate this change. For reference, original FCC grant was issues on 10/26/2020. If you have any questions regarding this application, please feel free to contact me. Print Name: Nick Wu Title: Senior Engineer Email: nick_wu@sercomm.com Company: Sercomm Corporation Sign by:

Date: September 14, 2020 Federal Communications Commission Authorization and Evaluation Division FCC ID: P27OT221 Confidentiality Request outlined below:

1. Block Diagram 2. Schematics 3. Operation Description Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, we hereby request confidential treatment of information accompanying this application as The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Rule 0.457, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely,

Name: Nick Wu Sercomm Corporation

Sercomm Corporation 8F, No. 3-1, YuanQu St., NanKang, Taipei 115, Taiwan, R.O.C. ATTESTATION Date: September 24, 2020 Federal Communications Commission Authorization and Evaluation Division FCC ID: P27OT221 Product: Subscriber End Equipment HGW Model: AOT-4221SR Channel 12 and Channel 13 cant be used in USA, We don't provide any controls or software to allow operation outside the USA frequency band when we sell this product in USA. Sincerely, Name: Marlin Chen Position: CEO 9680 Old Bailes Rd. Fort Mill, SC 29707 United States