EW780-5001-002.4 GHZ CORDLESS TELEPHONE

VTECH ENGINEERING CANADA LTD. TITLEENGINEERING FEASIBILITY STUDY REPORT (Modified) MODELWDCT – Speaker Phone/CID/ITAD Models CAUTION: THIS IS A DRAFT COPY – HARDCOPY IS UNCONTROLLED. Reference: PRC 00XXRevision: 1.0Page: 1 of 9 This document is proprietary to VTECH ENGINEERING CANADA LTD. Engineering Feasibility Study VTech WDCT 2.4 GHz Single-Line Digital Cordless Telephone Models: 2421 - CID 2431 – CID/Dual Keypad 2461 – CID/ADPCM ITAD Revision History: RevisionDescriptionPageEffective Date 1.0Initial ReleaseAllSept 22’99 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 VT ECH policies and administrative procedures. This document remains the property of VT ECH Engineering Canada Ltd., and must be returned upon request. Prepared ByLow Poh Choon/Ralph Tischler Approved ByGary Rogalski TitleProject ManagersTitleEngineering Manager VTECH ENGINEERING CANADA LTD. TITLEENGINEERING FEASIBILITY STUDY REPORT (Modified) MODELWDCT – Speaker Phone/CID/ITAD Models CAUTION: THIS IS A DRAFT COPY – HARDCOPY IS UNCONTROLLED. Reference: PRC 00XXRevision: 1.0Page: 2 of 9 This document is proprietary to VTECH ENGINEERING CANADA LTD. Table of Contents 1GENERAL ........................................................................................................................3 2PRODUCT OVERVIEW .................................................................................................... 4 2.1FEATURE LIST ............................................................................................................ 4 2.1.1 BASIC FEATURES.................................................................................................................... 4 2.1.2 HANDSET (Common across all 3 models) ............................................................................... 4 2.1.3 Base Station(2421) .................................................................................................................... 4 2.1.4 Base Station(2431) .................................................................................................................... 4 2.1.5 Base Station(2461) - SIEMENS’ Chipset built in ADPCM ITAD ................................................ 5 2.2HANDSET FUNCTIONS (KEYS/FEATURES) .............................................................. 5 2.3INDUSTRIAL DESIGN – Line Drawings ....................................................................... 6 2.3.1 HANDSET (Across all 3 models) ............................................................................................... 6 2.3.2 BASE (2421) Line Drawing: ...................................................................................................... 7 2.3.3 BASE (2431) Line Drawing: ...................................................................................................... 8 2.3.4 BASE (2461) Line Drawing: ...................................................................................................... 9 VTECH ENGINEERING CANADA LTD. TITLEENGINEERING FEASIBILITY STUDY REPORT (Modified) MODELWDCT – Speaker Phone/CID/ITAD Models CAUTION: THIS IS A DRAFT COPY – HARDCOPY IS UNCONTROLLED. Reference: PRC 00XXRevision: 1.0Page: 3 of 9 This document is proprietary to VTECH ENGINEERING CANADA LTD. 1 GENERAL This document is the feasibility study report (FSR) for the following VTech WDCT cordless telephones:
2421 – CID (Partial Study)
2431 – CID/Dual Keypad
2461 – CID/ADPCM ITAD (Partial Study) This study does not include the RBOC Products or the Remote Charger (latter is done in UK). The VTech WDCT product line consists of 2.4GHz cordless phones designed using the Infineon Chip set for both the RF and the Audio circuitry. They are high end products targeted at the SOHO market segment. Software is build on top of an existing SW stack and RF/ASIC technology is based on a proven DECT technology platform. VTECH ENGINEERING CANADA LTD. TITLEENGINEERING FEASIBILITY STUDY REPORT (Modified) MODELWDCT – Speaker Phone/CID/ITAD Models CAUTION: THIS IS A DRAFT COPY – HARDCOPY IS UNCONTROLLED. Reference: PRC 00XXRevision: 1.0Page: 4 of 9 This document is proprietary to VTECH ENGINEERING CANADA LTD. 2 PRODUCT OVERVIEW In defining the product here, one of the key objectives is to build upon the VTech WDCT and the VTech UK DECT product design. The aim is to minimise the number of differences between the 3 models in order to develop the product within the desired time frame with the lowest cost possible. 2.1 FEATURE LIST Here is a listing of the major features offered in this product line: 2.1.1 BASIC FEATURES
2.4GHz Transmission
2.4GHz Frequency Hopping Spread Spectrum
100% Bellcore compliance
3 and 4-way conferencing
Graphic LCD Display
Enhance Surge resistance (800V metallic surge)
Multi-H/S compatible – Up to a maximum of 4 Handsets 2.1.2 HANDSET (Common across all 3 models)
User Interface Reference: “ 60-F986 – Proposal for a common DECT4/WDCT 2.4GHz User Interface”
External-antenna design
Half-Duplex Speaker Phone
2.5mm H/J
50 Public memory locations in the Phone Directory
Backlit LCD and Keypad
Compatible to CID Type 2.5 functions for later models (not initial units)
Smart Dialing from CID information
Multi-line LCD for simultaneous display CID information and Soft key labels.
Provide Pay Per Use function possibilities for the RBOCs
Intercom with B/S
VMWI LED on the top of H/S
VMWI with both Stutter and FSK detection.
Face-up charging only.
Hands-Free Speaker
Remote ITAD Control (Applicable with an ITAD Base Only)
Belt clip
Wall mount provision 2.1.3 Base Station(2421)
Spare battery charger with POTS mode
Battery: 2xAA NiMH
VMWI LED 2.1.4 Base Station(2431)
Spare battery charger with POTS mode
Battery: 2xAA NiMH
Dual Keypad
Full Duplex Speaker Phone for Hands free operation
3 function keys: They will be 3 PPU keys for the RBOC Models…

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TECHV ENGINEERING CANADA LTD. 200-7671 Alderbridge Way, Richmond B.C. Canada V6X 1Z9 FAX: (604) 276-9137 TEL: (604) 273-5131 FCC ID: EW780-5001-00 Federal Communications Commission 7435 Oakland Mills Road, Columbia, Maryland 21046 Authority To Act As Agent To The Federal Communication Commissions I appoint KTL Ottawa Inc. to act as agent in the preparation of applications for equipment authorization on our behalf to the Federal Communications Commission. I certify that exhibits submitted properly describe the devise or system for which equipment authorization is sought. I also certify that each unit manufactured, imported or marketed, as defined in the commissions regulations will have affixed to it a label identical to that submitted for approval with this application. Dated this __8th_day of ____October__1999 Agency Agreement Expiration Date: Mar. 1, 2000 By:_ _ Joseph Poon (Signature) (Printed) Title: Senior Regulatory Compliance Engineer Telephone: (604) 273-5131 Applicant: VTECH Engineering Canada Ltd.

MODEL : 2431 5 NOV,99 HS REAR - CAUTION (ENGRAVE) 24mm R1 CAUTION:USE ONLY VTECH BATTERY 80-XXXX-00-00 12.85mm HS REAR - CANADA NO. (ENGRAVE) CANADA XXXX XXX XXXX 24mm 5mm R1 HS REAR BTM - FCC NO. (ENGRAVE) FCC ID EW780-5001-00 20mm 3mm COMPLIES WITH PART 68 FCC RULES FCC REGISTRATION NO.:XXXXXX-XXXXX-XX-X RINGER EQUIVALENCE: XX USOC JACK: RJ11C/RJ11W 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. CANADA XXXX XXX XXXX REN/IES : XX IC : RSS/CNRXXX FCC ID: EW780-5001-00 HAC MODEL : 2431 VTECH COMMUNICATIONS LTD. MANUFACTURED IN CHINA 60mm 25mm BS BTM - FCC (ENGRAVE) CORDLESS TELEPHONE ® VTECH COMMUNICATIONS LTD. DC 7V 900mA CLASS 2 POWER SOURCE ONLY 40mm 30mm R0.6 BS BTM - CUL (ENGRAVE) 8L55

Master: ktlPT15C-FHT Date: November 8, 1999 KTL Test Report:9R01883 Applicant:VTECH Engineering Canada Ltd. 200-7671 Alderbridge Way Richmond, BC V6X 1Z9 Equipment Under Test:VTECH 2431 Cordless Telephone (E.U.T.) FCC ID:EW780-5001-00 In Accordance With:FCC Part 15, Subpart C Frequency Hopping Transmitters 2400 - 2483.5 MHz Tested By:KTL Ottawa Inc. 3325 River Road, R.R. 5 Ottawa, Ontario K1V 1H2 Authorized By: K. Carr, Technologist Date: Total Number of Pages:50 KTL OttawaFCC PART 15, SUBPART C FREQUENCY HOPPING TRANSMITTERS PROJECT NO.: 9R01883 EQUIPMENT: VTECH 2431 2.4 GHz Cordless Telephone FCC ID: EW780-5001-00 Page 2 of 47 Table of Contents Section 1.Summary of Test Results ......................................................................................................3 Section 2.Equipment Under Test (E.U.T.) ...........................................................................................5 Section 3.Powerline Conducted Emissions ..........................................................................................7 Section 4.Channel Separation .............................................................................................................13 Section 5.Pseudorandom Hopping Algorithm ..................................................................................14 Section 6.Time of Occupancy..............................................................................................................16 Section 7.Occupied Bandwidth...........................................................................................................19 Section 8.Peak Power Output .............................................................................................................35 Section 9.Spurious Emissions (Antenna Conducted)........................................................................36 Section 10. Spurious Emissions (Radiated) ..........................................................................................39 Section 11. Test Equipment List ............................................................................................................46 Annex A Block Diagrams ..................................................................................................................A1 KTL OttawaFCC PART 15, SUBPART C FREQUENCY HOPPING TRANSMITTERS PROJECT NO.: 9R01883 EQUIPMENT: VTECH 2431 2.4 GHz Cordless Telephone FCC ID: EW780-5001-00 Page 3 of 47 Section 1.Summary of Test Results Manufacturer:VTECH Engineering Canada Ltd. Model No.:VTECH 2431 Serial No.:None Date Received In Laboratory: November 2, 1999 KTL Identification No.: Item #12 & 13 General:All measurements are traceable to national standards. These tests were conducted on a sample of the equipment for the purpose of demonstrating compliance with Part 15, Subpart C, Paragraph 15.247 for Frequency Hopping Spread Spectrum devices. Radiated tests were conducted is accordance with ANSI C63.4-1992. Radiated emissions are made on an open area test site. A description of the test facility is on file with the FCC. New SubmissionProduction Unit Class II Permissive ChangePre-Production Unit ETS Equipment CodeFamily Listing THIS TEST REPORT RELATES ONLY TO THE ITEM(S) TESTED. THE FOLLOWING DEVIATIONS FROM, ADDITIONS TO, OR EXCLUSIONS FROM THE TEST SPECIFICATIONS HAVE BEEN MADE. See “ Summary of Test Data”. NVLAP LAB CODE: 100351-0 TESTED BY: _____________________________________ DATE: ___________________ Glen Westwell, Technologist KTL Ottawa Inc. authorizes the above named company to reproduce this report provided it is reproduced in its entirety and for use by the company’s employees only. Any use which a third party makes of this report, or any reliance on or decisions to be made based on it, are the responsibility of such third parties. KTL Ottawa Inc. accepts no responsibility for damages, if any, suffered by any third party as a result of decisions made or actions based on this report. This report applies only to the items tested. KTL OttawaFCC PART 15, SUBPART C FREQUENCY HOPPING TRANSMITTERS PROJECT NO.: 9R01883 EQUIPMENT: VTECH 2431 2.4 GHz Cordless Telephone FCC ID: EW780-5001-00 Page 4 of 47 Summary Of Test Data NAME OF TESTPARA. NO.SPEC.MEAS.RESULT Powerline Conducted Emissions15.207(a) 48 dBμV32.8 dBμV Complies Channel Separation15.247(a)(1)Greater of 25 kHz or 20 dB Bandwidth 843 kHzComplies Pseudorandom Hopping Algorithm 15.247(a)(1)At Least 75 Channels See Customer Supplied Data Complies Time of Occupancy15.247(a)(1)(ii) ≤ 0.4 sec in 30 sec 32.5 mSecComplies 20 dB Occupied Bandwidth15.247(a)(1) ≤ 1 MHz 843 kHzComplies Peak Power Output15.247(b)1 Watt0.131WComplies Spurious Emissions (Antenna Conducted) 15.247(c)-20 dBcN/ANot Applicable Spurious Emissions (Radiated)15.247(c)Table 15.209(a) 49.9 dBμV Complies Footnotes For N/A’s: Test Conditions: IndoorTemperature: 22 °C Humidity:24 % OutdoorTemperature: 10 °C Humidity:25 % KTL OttawaFCC PART 15, SUBPART C FREQUENCY HOPPING TRANSMITTERS PROJECT NO.: 9R01883 EQUIPMENT: VTECH 2431 2.4 GHz Cordless Telephone FCC ID: EW780-5001-00 Page 5 of 47 Section 2.Equipment Under Test (E.U.T.) General Equipment Information Frequency Range: 2401.056 MHz to 2481.408 MHz Tunable Bands: Not Applicable Number of Channels: 94 Channel Spacing: 0.864 MHz Emissions Designator: 843KF1D User Frequency Adjustment: Not Applicable KTL OttawaFCC PART 15, SUBPART C FREQUENCY HOPPING TRANSMITTERS PROJECT NO.: 9R01883 EQUIPMENT: VTECH 2431 2.4 GHz Cordless Telephone FCC ID: EW780-5001-00 Page 6 of 47 Theory of Operation The CT2431 2.4 GHz cordless telephone uses frequency hopping spread spectrum in the 2400 to 2483.5 MHz ISM band. A maximum of four handsets can communicate with one base station simultaneously via time division multiple access (TDMA) multiplexing. Time division duplexing (TDD) is used for communication between the base station and any one handset. KTL OttawaFCC PART 15, SUBPART C FREQUENCY HOPPING TRANSMITTERS PROJECT NO.: 9R01883…

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