EW780-8479-001.9GHz DECT Deskset

© 2012–2013 Advanced American Telephones. All Rights Reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property licensed to Advanced American Telephones, San Antonio, TX 78219. Syn248 TM is a trademark of Advanced American Telephones. Issue .0 05/13 AT&T SB35020/SB35025 Deskset User’s Guide Draft 2 Syn248 SB35020/SB35025 Deskset User’s Guide CONTENTS Preface .............................................................................................................. 6 Additional Documentation ................................................................................................................................. 6 Topic Navigation ..................................................................................................................................................... 7 Text Conventions .................................................................................................................................................... 7 Overview ........................................................................................................... 8 Syn248 System Overview................................................................................................................................... 9 Deskset Overview.................................................................................................................................. 9 Deskset Description............................................................................................................................................ 10 Deskset Hard Keys ............................................................................................................................. 11 Lines and Line Keys............................................................................................................................................ 12 Setting Your Password...................................................................................................................................... 12 Soft Keys .................................................................................................................................................................. 13 Scroll Indicators ................................................................................................................................................... 13 Deskset Status Indicators................................................................................................................................ 14 Call Indicators ....................................................................................................................................................... 15 Call Status LEDs .................................................................................................................................. 15 Call Status Icons ................................................................................................................................. 16 Programmable Feature Keys ......................................................................................................................... 17 Programmable Feature Key LEDs............................................................................................... 18 Dial-Pad Entry ....................................................................................................................................................... 19 Using the Speakerphone.................................................................................................................................. 20 Using Help Screens............................................................................................................................................. 20 Making Calls ...................................................................................................21 Active Call Screen ............................................................................................................................................... 22 Predialing................................................................................................................................................................. 23 Live Dialing ............................................................................................................................................................. 23 Making a Call from a List................................................................................................................................. 24 Making an Intercom Call.................................................................................................................................. 25 Making Calls with an Optional AT&T DECT Cordless Headset (SB35025 Only)................... 26 Answering Calls.............................................................................................27 Incoming Call Screen......................................................................................................................................... 28 Incoming Call Indication .................................................................................................................................. 28 Draft 3 Syn248 SB35020/SB35025 Deskset User’s Guide Answering a Call.................................................................................................................................................. 29 Ignoring a Call....................................................................................................................................................... 30 Intercom Auto Answering ............................................................................................................................... 31 Call Forward–No Answer................................................................................................................................. 32 About the Auto Attendant ....................…

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VTech Telecommunications Ltd Appendix B1 Letter of Agency for FCC Certification July 25, 2013 To whom it may concern, Letter of Agency I, an officer of VTech Telecommunications Ltd. do hereby authorize Intertek Testing Services (Mr. Ken Sit/ Mr. Melvin Nip) to act on our behalf in front of the Federal Communications Commission with respect to all matters relating to certification of equipment under Part 15 and/or Part 95 of the FCC Rules until further notice. I further certify that no party (as defined in §1.2002(b) of CFR 47, 2004) to this application, including myself, is 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. Regards, Michael Tsui Approbation Supervisor

VTech Telecommunications Ltd July 25, 2013 To whom it may concern, Request for Permanent Confidentiality Under FCC Part 15 Certification FCC ID: EW780-8479-00 Request is hereby submitted by VTech Telecommunications Ltd. to withhold permanently from public review certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR § 0.457(d) and 0.459 of the FCC Rules. In particular, the following sections of the application are to be kept permanently confidential and VTech Telecommunications Ltd. reserves the right to discern which parties can obtain access to these information: • Schematics • Detailed Block diagrams • Detailed Operational/Functional Description The rationale for request for confidentiality is as followings: This information represents intellectual property of VTech Telecommunications Ltd. and it is subject to competition. We have invested considerable time and materials in research and development to produce the referenced product. Disclosure of the permanently confidential portions of this application to competitors would not only give them significant competitive advantages in developing similar products, but would also disclose successful implementation of unpublished, leading edge technology developed by us. If you have questions or need further information, please contact the undersigned. Regards, Michael Tsui Approbation Supervisor

INTERTEK TESTING SERVICES External Photos FCC ID: EW780-8479-00 IC: 1135B-80847900 external photos - 1 of 3 HK13070800 Job Number HK13070800 Job Number INTERTEK TESTING SERVICES External Photos FCC ID: EW780-8479-00 IC: 1135B-80847900 external photos - 2 of 3 INTERTEK TESTING SERVICES External Photos FCC ID: EW780-8479-00 IC: 1135B-80847900 external photos - 3 of 3

Advanced American Telephones 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. PRIVACY OF COMMUNICATIONS MAY NOT BE ENSURED WHEN USING THIS PHONE. RESET 17.50 98.00 12.60 13.00 42.00 19.00 30.00 30.00 12.60 R1.00 R0.50 30.00 SB35025 ENGRAVING DRAFT FILE model name label 41x12mm Text: engraved in raised 0.3mm HAC DC 5.1V 1.7A ITE LIMITED POWER SOURCE MANUFACTURED IN CHINA FCC ID: EW780-8479-00 Registration no. US: EW7KH01B80-656300 IC: 1135B-80847900 17.50 19.00 RESET 98.00 12.60 13.00 42.00 30.00 30.00 12.60 R1.00 R0.50 30.00 SB67025 ENGRAVING DRAFT FILE model name label 41x12mm SB67025 Advanced American Telephones 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. PRIVACY OF COMMUNICATIONS MAY NOT BE ENSURED WHEN USING THIS PHONE. HAC DC 5.1V 1.7A ITE LIMITED POWER SOURCE MANUFACTURED IN CHINA FCC ID: EW780-8479-00 Registration no. US: EW7KH01B80-656300 IC: 1135B-80847900

INTERTEK TESTING SERVICES Internal photos FCC ID: EW780-8479-00 IC: 1135B-80847900 internal photos - 1 of 7 Deskset assembly Deskset Main PCB comp side (View 1) INTERTEK TESTING SERVICES Internal photos FCC ID: EW780-8479-00 IC: 1135B-80847900 internal photos - 2 of 7 Deskset Main PCB comp side (View 2) Deskset Main PCB solder side (View 1) INTERTEK TESTING SERVICES Internal photos FCC ID: EW780-8479-00 IC: 1135B-80847900 internal photos - 3 of 7 Deskset Main PCB solder side (View 2) Deskset another Main PCB comp side INTERTEK TESTING SERVICES Internal photos FCC ID: EW780-8479-00 IC: 1135B-80847900 internal photos - 4 of 7 Deskset another Main PCB solder side Deskset Hook Switch Board front side INTERTEK TESTING SERVICES Internal photos FCC ID: EW780-8479-00 IC: 1135B-80847900 internal photos - 5 of 7 Deskset Hook Switch Board rear side Deskset AC Jack and Telephone Line Jack front side INTERTEK TESTING SERVICES Internal photos FCC ID: EW780-8479-00 IC: 1135B-80847900 internal photos - 6 of 7 Deskset AC Jack and Telephone Line Jack rear side Deskset Antenna INTERTEK TESTING SERVICES Internal photos FCC ID: EW780-8479-00 IC: 1135B-80847900 internal photos - 7 of 7 Deskset Oscillator PCB comp side Deskset Oscillator PCB solder side

INTERTEK TESTING SERVICES FCC ID: EW780-8479-00 RF exposure - 1 of 1 For Maximum Permissible Exposure (MPE) evaluation of the base unit, the maximum power density at 20 cm from this mobile transmitter shall be less than the General Population / Uncontrolled MPE limit in OET Bulletin 65 and meet the requirement listed in KDB447498. The setup and equipment setting were made in accordance with ANSI C63.17. The antenna of EUT transmitter was replaced by a coaxial cable. The impendence matching of connection, cable loss and external RF attenuator are taken into account. The EUT was arranged to communicate via a fixed carrier frequency between its transmitter and a companion device. The transmission was configured in burst mode with pseudo-random data as typical as normal operation. For the 1.9GHz Desksetof tested model: SB35025, the measured powers among all the measured channels were within its production tolerance: +16 dBm (Minimum) and +21 dBm (Maximum).The antenna gain of SB35025 is 2 dBi = 1.58 (num gain) and its maximum source-based time-averaging duty factor is 8.3% (2/24 x100%). From these data and its operating configuration – Mobile device, the exposed power density at a distance (R) of 20cm from the center of radiation of the antenna can be calculated according to OET Bulletin 65 as follow: The Conducted Power = 21 dBm = 125.9 mW The Conducted Power source-based time-averaging output power = (125.9 * 0.083) mW = 10.45 mW The power density at 20cm = 10.45 *1.58/ 4πR 2 = 0.0033 mW cm -2 In the frequency range of 1,500 - 100,000MHz, the MPE limit is 1.0 mWcm -2 for general population and uncontrolled exposure. As the measured power density at 20cm from the transmitter is lower than the MPE limit, the compliance to the MPE limit can be ensured by indicating the minimum 20cm separation between the transmitter's radiating structures and body of the user or nearby persons. The following RF exposure statement is proposed to be included in the user manual: “ FCC RF Radiation Exposure Statement Caution: To maintain compliance with the FCC’s RF exposure guidelines, place the base unit at least 20cm from nearby persons.” EUT Spectrum Analyzer Companion Device Directional Coupler

VTech Telecommunications Ltd Date: July 25, 2013 To whom it may concern, Declarations FCC ID: EW780-8479-00 IC: 1135B-80847900 I, the undersigned, hereby declare that 1. The device does not use the provisions of 47CFR 15.323 (c) (6), random waiting mechanism is not used in this system. 2. The provisions of 47CFR 15.323 (c) (10) and 47CFR 15.323 (c) (11) are not used to extend the range of spectrum occupied over space or time for the purpose of denying fair access to spectrum to other devices. 3. Only the H eadset will act as the initiating device, which will initiate the establishment of the dup lex connection. 4. The device complies with the provisions of 47CFR 15.319(f). The device shall automatically discontinue transmission in case of either absence of information to transmit or operational failure. These provisions are not intended to preclude transmission of control and signaling information or use of repetitive codes used by certain digital technologies to complete frame or burst intervals. The following table explains the reaction of device in case of either absence of information to transmit or operational failure after a connection of its companion device is established. Circumstances Reaction of Deskset Reaction of H eadset 1 Switch-off companion device B NA 2 On Hook by companion device B C 3 Switch-off device NA C 4 On Hook on device side B C 5 Remove power from device A C 6 Remove power from companion device B A A – Connection is terminated and, transmission ceases. B – Connection is terminated but device transmits control or signaling information. C – Connection is terminated but companion device transmits control or signaling information. N A – Not applicable If you have questions or need further information, please contact the undersigned. Regards, Michael Tsui Approbation Supervisor

Issuing Laboratory: Intertek Testing Services Hong Kong Limited Hong Kong Accreditation Service (HKAS) has accredited this laboratory under the Hong Kong Laboratory Accreditation Scheme (HOKLAS) for specific laboratory activities as listed in the HOKLAS directory of accredited laboratories. The results shown in this report were determined by this laboratory in accordance with its terms of accreditation. Test Report Number: 13070800HKG-001 Page 1 of 63 FCC ID: EW780-8479-00 IC: 1135B-80847900 Intertek Testing Services Hong Kong Ltd. 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Tel: (852) 2173 8888 Fax: (852) 2785 5487 Website: www.hk.intertek-etlsemko.com GENERAL INFORMATION VTech Telecommunications Ltd.: VTech Telecommunications Ltd. Applicant Address: 23/F., Tai Ping Industrial Centre, Block 1, 57 Ting Kok Road, Tai Po, Hong Kong. FCC Specification Standard: FCC Part 15, October 1, 2011 Edition and 77 FR 43013, July 23, 2012 FCC ID: EW780-8479-00 FCC Model(s): SB35025, SB67025 IC Specification Standard: RSS-213 Issue 2, December 2005 RSS-Gen Issue 3, December 2010 IC: 1135B-80847900 IC Model(s): SB35025, SB67025 Type of EUT: Unlicensed Personal Communications Service Devices Description of EUT: 1.9Hz DECT Deskset Serial Number: N/A Sample Receipt Date: July 17, 2013 Date of Test: August 6, 2013 to August 9, 2013 Report Date: September 10, 2013 Environmental Conditions: Temperature: +10 to 40°C Humidity: 10 to 90% Issuing Laboratory: Intertek Testing Services Hong Kong Limited Hong Kong Accreditation Service (HKAS) has accredited this laboratory under the Hong Kong Laboratory Accreditation Scheme (HOKLAS) for specific laboratory activities as listed in the HOKLAS directory of accredited laboratories. The results shown in this report were determined by this laboratory in accordance with its terms of accreditation. Test Report Number: 13070800HKG-001 Page 2 of 63 FCC ID: EW780-8479-00 IC: 1135B-80847900 Intertek Testing Services Hong Kong Ltd. 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Tel: (852) 2173 8888 Fax: (852) 2785 5487 Website: www.hk.intertek-etlsemko.com Table of Contents 1.0 Test Results Summary & Statement of Compliance......................................... 5 1.1 Summary of Test Results .................................................................................. 5 1.2 Statement of Compliance .................................................................................. 6 2.0 General Description............................................................................................ 8 2.1 Product Description ............................................................................................ 8 2.2 Technical Description ......................................................................................... 8 2.3 Test Methodology............................................................................................... 9 2.4 Test Facility........................................................................................................ 9 3.0 System Test Configuration............................................................................... 11 3.1 Justification ...................................................................................................... 11 3.2 Conducted Emission Test Configuration ........................................................... 13 3.3 Conducted Monitoring and Operational Test Configuration ............................... 13 3.4 EUT Exercising Software.................................................................................. 13 3.5 Details of EUT and Description of Accessories................................................. 14 3.6 Measurement Uncertainty ................................................................................ 14 4.0 Measurement Results....................................................................................... 16 4.1 Antenna Requirement...................................................................................... 16 4.2 Digital Modulation Techniques.......................................................................... 16 4.3 Emission Bandwidth......................................................................................... 17 4.4 Directional Gain of the Antenna ........................................................................ 20 4.5 Peak Transmit Power ....................................................................................... 21 4.6 Power Spectral Density .................................................................................... 24 4.7 Automatic Discontinuation of Transmission....................................................... 27 4.8 Unwanted Emission Inside the Sub-Band ......................................................... 28 4.9 Emissions Outside the Sub-Band ..................................................................... 32 4.9.1 Radiated Emissions Configuration Photographs ............................................ 33 4.9.2 Radiated Emissions Data .............................................................................. 33 4.9.3 Field Strength Calculation.............................................................................. 37 4.9.4 Average Factor Calculation and Transmitter ON Time Measurements ........... 38 4.10 AC Power Line Conducted Emissions ............................................................ 39 4.10.1 AC Power Line Conducted Emissions Configuration Photographs ............... 40 4.10.2 AC Power Line Conducted Emissions Data ................................................. 40 4.11 Frame Repetition Stability ............................................................................. 44 4.12 Frame Period and Jitter ................................................................................. 45 4.13 Carrier Frequency Stability............................................................................. 46 4.14 Monitoring…

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INTERTEK TESTING SERVICES The Worst Case Configuration Photographs - Mode: Transmission FCC ID: EW780-8479-00 IC: 1135B-80847900 config photos (radiated emission) - 1 of 1 Radiated Emission Front View Rear View INTERTEK TESTING SERVICES The Worst Case Configuration Photographs - Mode: Talk (DECT) FCC ID: EW780-8479-00 IC: 1135B-80847900 config photos (conducted emission) - 1 of 2 Conducted Emission Front View Right Side View INTERTEK TESTING SERVICES The Worst Case Configuration Photographs - Mode: Talk (DECT) FCC ID: EW780-8479-00 IC: 1135B-80847900 config photos (conducted emission) - 2 of 2 Conducted Emission Left Side View