T2C-WHM631DECT Wireless Headset

* The pictures in this guide take the Teams edition as an example. DECT Wireless Headset Quick Start Guide V1.0 Yealink Documentation support.yealink.com WH M631 Package Contents Base Headset Quick Start Guide We recommend that you use the included accessories, because other accessories may have compatibility issues that prevent them from working properly. Yealink provides a USB device manager client - Yealink USB Connect, which you can download from the Yealink website support.yealink.com. Power Adapter Micro USB-A to USB-C USB2.0 Cable 1.0M Micro USB-A to USB-A USB2.0 Cable 1.0M Busylight BLT60 (Optional) L R L R L R L R EarGels EarHooksHeadband Neckband Busylight BLT60 How to Connect How to Charge the Headset How to Wear EarHooks Neckband Headband How to Use Volume Up Button Before using the Teams button functions, you should install the Microsoft Teams client on your PC. Call Control Button Volume Down Button 5 6 7 3 Teams Edition UC Edition 3 1 2 4 PC Button Teams Button (Teams Edition) Voice Assistant Button （ UC Edition) Phone Button We sincerely recommend that you use Yealink Ticketing system (https://ticket.yelink.com) to submit all your techni- cal issues. No.ItemAction & Function 1PC Button Press to enter the softphone dialing screen, answer or enter a softphone's call. 2Desk Phone Button Press to enter the phone dialing screen, answer or end a phone's call. 3 (Teams Edition) Teams Button • Hold for 2 seconds to activate Cortana (this requires Microsoft's support). • Press to invoke the Teams client in the idle state. （ UC Edition) Voice Assistant ButtonHold for 2 seconds to activate the voice assistant. 4Mute ButtonPress to mute or unmute the microphone. 5Volume Up ButtonPress to turn up the volume. 6Call Control Button • Press to answer, reject, or end a call. • Hold for 2 seconds to activate Cortana (this requires Microsoft's support). • Press to invoke the Teams client in the idle state. 7Volume Down ButtonPress to turn down the volume. Regulatory Notices Operating Ambient Temperatures • Operating temperature: +32 to 104°F (0 to 40°C) • Relative humidity: 5% to 90%, noncondensing • Storage temperature: -22 to +160°F (-30 to +70°C) Warranty Our product warranty is limited only to the unit itself, when used normally in accordance with the operating instructions and the system environment. We are not liable for damage or loss resulting from the use of this product, or for any claim from a third party. We are not liable for problems with Yealink device arising from the use of this product; we are not liable for financial damages, lost profits, claims from third parties, etc., arising from the use of this product. Explanation of the symbols • DC symbol is the DC voltage symbol. • WEEE Warning symbol To avoid the potential effects on the environment and human health as a result of the presence of hazardous substances in electrical and electronic equipment, end users of electrical and electronic equipment should understand the meaning of the crossed-out wheeled bin symbol. Do not dispose of WEEE as unsorted municipal waste and have to collect such WEEE separately. Restriction of Hazardous Substances Directive (RoHS) This device complies with the requirements of the EU RoHS Directive. Statements of compliance can be obtained by contacting [email protected]. Safety Instructions Save these instructions. Read these safety instructions before use! General Requirements • Before you install and use the device, read the safety instructions carefully and observe the situation during opera- tion. • During the process of storage, transportation, and operation, please always keep the device dry and clean, avoid collision and crash. • Please attempt not to dismantle the device by yourself. In case of any discrepancy, please contact the appointed maintenance center for repair. • Please refer to the relevant laws and statutes while using the device. Legal rights of others should be respected as well. Environmental Requirements • Place the device at a well-ventilated place. Do not expose the device under direct sunlight. • Keep the device dry and free of dust. • Do not place the device on or near any inflammable or fire-vulnerable object, such as rubber-made materials. • Keep the device away from any heat source or bare fire, such as a candle or an electric heater. Operating Requirements • Do not let a child operate the device without guidance. • Do not let a child play with the device or any accessory in case of accidental swallowing. • Please use the accessories provided or authorized by the manufacturer only. • The power supply of the device shall meet the requirements of the input voltage of the device. Please use the provided surge protection power socket only. • Before plugging or unplugging any cable, make sure that your hands are completely dry. • Do not spill liquid of any kind on the product or use the equipment near water, for example, near a bathtub, wash- bowl, kitchen sink, wet basement or near a swimming pool. • During a thunderstorm, stop using the device and disconnect it from the power supply. Unplug the power plug and the Asymmetric Digital Subscriber Line (ADSL) twisted pair (the radio frequency cable) to avoid lightning strike. • If the device is left unused for a rather long time, disconnect it from the power supply and unplug the power plug. • When there is smoke emitted from the device, or some abnormal noise or smell, disconnect the device from the power supply, and unplug the power plug immediately. • Contact the specified maintenance center for repair. • Do not insert any object into equipment slots that is not part of the product or auxiliary product. • Before connecting a cable, connect the grounding cable of the device first. Do not disconnect the grounding cable until you disconnect all other cables. Battery Requirements • Do not immerse the battery into water, which could short-circuit and damage the battery. • Do not expose the battery to an open flame or leave…

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YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. 309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: [email protected] Attestation Letter Date: 2020/09/24 To whom it may concern: The RF chip, model ATS2833, which installed in our product DECT Wireless Headset, Model: WHM631, FCC ID: T2C-WHM631, support bluetooth function. For marketing purpose this chip not support bluetooth function. The bluetooth function has been shielded by the manufacturer using the software. Sincerely Yours, Signature: Stone Lu Vice General Manager

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. 309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: [email protected] QA-FR-170-B 7/29/2014 FCC Authorization Date: 2020-09-10 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD., the undersigned, hereby authorizes Bay Area Compliance Laboratories Corporation to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corporation on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Stone Lu Vice General Manager

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. 309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: [email protected] FCC Confidential Authorization Date: 2020-09-10 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: T2C-WHM631 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. hereby requests long-term confidential treatment of information accompanying this application as outlined below: • Block Diagram • Schematics • Operation Description As well as short-term confidential treatment of information accompanying this application for a period of 180 days after grant is issued as outlined below: • Internal Photos • User’s Manual • External Photos • Test Set-up Photos The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature Stone Lu Vice General Manager

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF EXHIBIT A - FCC ID LABEL AND LOCATION FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF Antenna Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF

Note: This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “★”. BACL is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with an asterisk ’*’. Customer model name, addresses, names, trademarks etc. are not considered data. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. SAR TEST REPORT For YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. FCC:309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, P.R. China IC: 309, 3rd Floor, No.16, Yun Ding North Road, Huli District Xiamen City Fujian 361008 China (Peoples Republic Of) FCC ID: T2C-WHM631 IC: 10741A-WHM631 R e p o r t T y p e : O r i g i n a l R e p o r t P r o d u c t T y p e : D E C T W i r e l e s s H e a d s e t Report Number: RSZ200819006-SA Report Date: 2020-09-18 Reviewed By: Yates Li SAR Engineer Prepared By: Bay Area Compliance Laboratories Corp. (Shenzhen) 6/F., West Wing, Third Phase of Wanli Industrial Building, Shihua Road, Futian Free Trade Zone, Shenzhen, Guangdong, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 2 of 48 Attestation of Test Results EUT Information EUT Description DECT Wireless Headset Tested Model WHM631 FCC ID T2C-WHM631 IC 10741A-WHM631 Serial Number RSZ200819006-RF-S1 Test Date 2020-09-08 MODE Max. SAR Level(s) Reported(W/kg) Limit (W/kg) DECT 1g Head SAR 0.10 1. 6 Applicable Standards FCC 47 CFR part 2.1093 Radiofrequency radiation exposure evaluation: portable devices IEEE1528:2013 IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques RSS-102 Issue 5 March 2015 Radio Frequency (RF) Exposure Compliance of Radio communication Apparatus (All Frequency Bands). IEC 62209-2:2010 Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices-Human models, instrumentation, and procedures-Part 2: Procedure to determine the specific absorption rate (SAR) for wireless communication devices used in close proximity to the human body (frequency range of 30 MHz to 6 GHz) KDB procedures KDB 447498 D01 General RF Exposure Guidance v06. KDB 648474 D04 Handset SAR v01r03. KDB 865664 D01 SAR measurement 100 MHz to 6 GHz v01r04 KDB 865664 D02 RF Exposure Reporting v01r02 Note: This wireless device has been shown to be capable of compliance for localized specific absorption rate (SAR) for General Population/Uncontrolled Exposure limits specified in FCC 47 CFR part 2.1093 and has been tested in accordance with the measurement procedures specified in IEEE 1528-2013 and RF exposure KDB procedures. The results and statements contained in this report pertain only to the device(s) evaluated. Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 3 of 48 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ......................................................................................................................... 4 EUT DESCRIPTION ................................................................................................................................................... 5 TECHNICAL SPECIFICATION ......................................................................................................................................... 5 REFERENCE, STANDARDS, AND GUIDELINES ................................................................................................. 6 SAR LIMITS ................................................................................................................................................................ 7 FACILITIES ................................................................................................................................................................. 8 DESCRIPTION OF TEST SYSTEM .......................................................................................................................... 9 EQUIPMENT LIST AND CALIBRATION ............................................................................................................. 15 EQUIPMENTS LIST & CALIBRATION INFORMATION ................................................................................................... 15 SAR MEASUREMENT SYSTEM VERIFICATION ............................................................................................. 16 LIQUID VERIFICATION ............................................................................................................................................... 16 SYSTEM ACCURACY VERIFICATION .......................................................................................................................... 17 EUT TEST STRATEGY AND METHODOLOGY ................................................................................................. 19 TEST POSITIONS FOR DEVICE OPERATING NEXT TO A PERSON’S EAR ....................................................................... 19 CHEEK/TOUCH POSITION .......................................................................................................................................... 20 EAR/TILT POSITION ................................................................................................................................................... 20 SAR EVALUATION PROCEDURE ................................................................................................................................ 21 CONDUCTED OUT…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 34 of 48 APPENDIX C PROBE CALIBRATION CERTIFICATES Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 35 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 36 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 37 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 38 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 39 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 40 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 41 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 42 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 43 of 48 APPENDIX D DIPOLE CALIBRATION CERTIFICATES Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 44 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 45 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 46 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 47 of 48 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 48 of 48 ***** END OF REPORT *****

Note: This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “★”. BACL is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with an asterisk ’*’. Customer model name, addresses, names, trademarks etc. are not considered data. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. FCC PART 15D MEASUREMENT AND TEST REPORT For YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. 309, 3rd Floor, No.16, Yun Ding North Road, Huli District, Xiamen City, Fujian, China FCC ID: T2C-WHM631 R e p o r t T y p e : O r i g i n a l R e p o r t P r o d u c t T y p e : D E C T W ir e l e s s H e a d s e t Report Number: RSZ200819006-00 Report Date: 2020-09-21 Reviewed By: Jimmy Xiao RF Engineer Prepared By: Bay Area Compliance Laboratories Corp. (Shenzhen) 6/F., West Wing, Third Phase of Wanli Industrial Building, Shihua Road, Futian Free Trade Zone, Shenzhen, Guangdong, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-00 FCC Part 15D Page 2 of 47 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 4 TEST FACILITY ............................................................................................................................................................. 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 LOCAL SUPPORT EQUIPMENT LIST AND DETAILS ........................................................................................................ 6 EXTERNAL I/O CABLE.................................................................................................................................................. 6 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 7 SUMMARY OF TEST RESULTS ............................................................................................................................... 8 TEST EQUIPMENT LIST ........................................................................................................................................... 9 FCC §2.1093- RF EXPOSURE ..................................................................................................................................... 10 APPLICABLE STANDARD ............................................................................................................................................ 10 FCC§15.317 & §15.203 - ANTENNA REQUIREMENT ......................................................................................... 11 APPLICABLE STANDARD ............................................................................................................................................ 11 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 11 FCC§15.315 & §15.207 - CONDUCTED EMISSIONS ............................................................................................ 12 APPLICABLE STANDARD ............................................................................................................................................ 12 EUT SETUP ................................................................................................................................................................ 12 EMI TEST RECEIVER SETUP ....................................................................................................................................... 12 TEST PROCEDURE ...................................................................................................................................................... 13 CORRECTED FACTOR & MARGIN CALCULATION ....................................................................................................... 13 TEST DATA ................................................................................................................................................................ 13 FCC§15.323 (A) - EMISSION BANDWIDTH .......................................................................................................... 16 APPLICABLE STANDARD ............................................................................................................................................ 16 TEST PROCEDURE .................................................…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-RF EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions - Front View Conducted Emissions - Side View

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ200819006-SA SAR Test Report 33 of 48 APPENDIX B EUT TEST POSITION PHOTOS Liquid depth ≥ 15cm Phantom: SAM-Twin V8.0 P1aP2a; Type: QD 000 P41 AA ; Serial: 1962 Head Setup Photo