T2C-WHB640DECT Wireless Headset

U.S. AGENT LETTER OF ATTESTATION Date: 2024-04-19 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: T2C-WHB640 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. certifies that, as of the date of the filing of the application, Iconsigh Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission- related proceeding involving the equipment. Iconsigh Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Company Name: Iconsigh Inc. Address: 2310 Homestead Road, Suite C1, Los Altos, CA, 94024, USA FRN: 0033398652 Tel.: +1 (408) 320-9867 Email: [email protected] Signed by (printed name): Benjamin Kaur Signature: Applicant: YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. Address: No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China FRN: 0014702682 Tel: 86-592-5702000 Email: [email protected] Signed by (printed name): Stone Lu Signature:

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: [email protected] CFR 47 §2.911(d)(5)(i) Attestation Letter Attestation Letter Date: 2024-04-19 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i) Filing FCC ID: T2C-WHB640 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. certifies that the equipment for which authorization is sought, is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Signature Contact Person: Stone Lu Title: Vice General Manager

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: [email protected] CFR 47 §2.911 (d)(5)(ii) Attestation Letter Attestation Letter Date: 2024-04-19 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(ii) Filing FCC ID: T2C-WHB640 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. certifies that as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, Signature Contact Person: Stone Lu Title: Vice General Manager

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: [email protected] QA-FR-170-B 7/29/2014 FCC Authorization Date: 2024-04-19 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 Corp. (Shenzhen) 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 Corp. (Shenzhen) 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 Contact Person: Stone Lu Title: Vice General Manager

YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Tel: 86-592-5702000 Fax: 86-592-5702455 Email: [email protected] FCC Confidential Authorization Date: 2024-04-19 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-WHB640 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) Project No.: SZ1240226-09379E-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.: SZ1240226-09379E-RF TR-EM-RF022 Page 12 of 85 Version 1.0 (2023/10/07) FCC §1.1307(b) & §2.1091 – RF EXPOSURE EVALUATION Applicable Standard According to KDB 447498 D04 Interim General RF Exposure Guidance v01, clause 2.1.4 –MPE-Based Exemption: An alternative to the SAR-based exemption is provided in § 1.1307(b)(3)(i)(C), for a much wider frequency range, from 300 kHz to 100 GHz, applicable for separation distances greater or equal to λ/2π, where λ is the free-space operating wavelength in meters. The MPE-based test exemption condition is in terms of ERP, defined as the product of the maximum antenna gain and the delivered maximum time-averaged power. For this case, a RF source is an RF exempt device if its ERP (watts) is no more than a frequency-dependent value, as detailed tabular form in Appendix B. These limits have been derived based on the basic specifications on Maximum Permissible Exposure (MPE) considered for the FCC rules in § 1.1310(e)(1). Table to § 1.1307(b)(3)(i)(C) - Single RF Sources Subject to Routine Environmental Evaluation f = frequency in MHz; R = minimum separation distance from the body of a nearby person (appropriate units, e.g., m); Result Mode Frequency (MHz) Tune up conducted power # Antenna Gain # ERP Evaluation Distance (m) MPE-Based Exemption Threshold (mW) (dBm) (dBi) (dBd)(dBm)(mW) DECT 1920-1930 20.4 2.41 0.26 20.66 116.410.2 768 Note 1: The tune-up power and antenna gain was declared by the applicant. Note 2: 0dBd=2.15dBi. Result: Compliant

Antenna Specification Specifications Summary ITEM SPEC. Model Name 1.9GHz Model number WHB640 Center Frequency 1880 MHz 1.70dBi 1900 MHz 1.60dBi 1930 MHz 1.63dBi MAX. GAIN 1.70dBi Manufacturer YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Antenna Photo & Length Unit: mm 1880M 3D 2D（X MHz ->Y;X- >>Z;Y->Z)) 1900 M 3D 2D（X MHz ->Y;X- >>Z;Y->Z)) 1930 M 3D 2D（X MHz ->Y;X- >>Z;Y->Z))

Antenna Specification Specifications Summary ITEM SPEC. Model Name 1.9GHz Model number WHB640ANT Center Frequency 1880 MHz 2.41dBi 1900 MHz 2.12dBi 1930 MHz 1.20dBi MAX. GAIN 2.41dBi Manufacturer YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. No.666 Hu'an Rd. Huli District Xiamen City, Fujian, P.R. China Antenna Photo & Length Unit: mm 1880M 3D 2D（X MHz ->Y;X- >>Z;Y->Z)) 1900 M 3D 2D（X MHz ->Y;X- >>Z;Y->Z)) 1930 M 3D 2D（X MHz ->Y;X- >>Z;Y->Z))

Note: The information marked # is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included. 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. This report must not be used by the customer to claim product certification, approval, or endorsement by NVLAP or any agency of the U.S. Government. This report may contain data that are not covered by the NVLAP accreditation and are marked with an asterisk “▼”. Bay Area Compliance Laboratories Corp. (Shenzhen) 5F(B-West) , 6F, 7F, the 3rd Phase of Wan Li Industrial Building D, Shihua Rd, FuTian Free Trade Zone, Shenzhen, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn TR-EM-RF022 Page 1 of 85 Version 1.0 (2023/10/07) TEST REPORT Applicant Name: YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD. Address: No.666 Hu’an Rd,Huli District Xiamen City, Fujian, P.R. China Report Number: SZ1240226-09379E-RF FCC ID: T2C-WHB640 IC: 10741A-WHB640 Test Standard (s) FCC PART 15D; RSS-GEN ISSUE 5, FEBRUARY 2021 AMENDMENT 2; RSS-213, ISSUE 3, MARCH 2015 Sample Description Product Type: DECT Wireless Headset Model No.: WHB640 Multiple Model(s) No.: N/A Trade Mark: Date Received: 2024/02/26 Issue Date: 2024/04/23 Test Result: Pass ▲ ▲ In the configuration tested, the EUT complied with the standards above. Prepared and Checked By: Approved By: Mike Xiao Jimmy Xiao RF Engineer RF Supervisor Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: SZ1240226-09379E-RF TR-EM-RF022 Page 2 of 85 Version 1.0 (2023/10/07) TABLE OF CONTENTS DOCUMENT REVISION HISTORY ......................................................................................................................... 4 GENERAL INFORMATION ....................................................................................................................................... 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 5 OBJECTIVE ................................................................................................................................................................... 5 TEST METHODOLOGY .................................................................................................................................................. 5 MEASUREMENT UNCERTAINTY .................................................................................................................................... 6 TEST FACILITY ............................................................................................................................................................. 6 SYSTEM TEST CONFIGURATION .......................................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 7 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 7 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 7 EXTERNAL I/O CABLE .................................................................................................................................................. 7 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 8 SUMMARY OF TEST RESULTS ............................................................................................................................... 9 TEST EQUIPMENT LIST ......................................................................................................................................... 10 FCC §1.1307(B) & §2.1091 – RF EXPOSURE EVALUATION .............................................................................. 12 APPLICABLE STANDARD ............................................................................................................................................ 12 RESULT ...................................................................................................................................................................... 12 RSS-102 § 2.5.2 –EXEMPTION LIMITS FOR ROUTINE EVALUATION-RF EXPOSURE EVALUATION 13 APPLICABLE STANDARD ............................................................................................................................................ 13 § 15.317, § 15.203 & RSS-GEN §6.8 ANTENNA REQUIREMENT ....................................................................... 14 APPLICABLE STANDARD ............................................................................................................................................ 14 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 14 § 15.315, § 15.207 & RSS-213 §5.4 CONDUCTED EMISSIONS ............................................................................ 15 APPLICABLE STANDARD ............................................................................................................................................ 15 EUT SETUP ................................................................................................................................................................ 15 EMI TEST RECEIVER …

Text truncated - open the document above for the full version.