BGBMT345XFOR6ATDMA/AMPS Cellular Phone

ESN Protection Description The following measures have been taken to protect against fraud due to modification of the ESN or telephone software, in compliance with CFR47, 22.919. (1) The stored ESN data in the FLASH device (which contains the information other than the ESN data) is encrypted with a Mitsubishi original algorithm. This ESN data is divided into four groups and interleaved with other data in the FLASH. (2) The ESN is never transferred in a readable format across wires on the printed circuit board, nor can the ESN be read by probing the pins of any device. (3) If the NVM (or data in FLASH) is altered, then the ESN becomes invalid and the phone will not operate. (4) The FLASH device containing the main program software and encrypted ESN data, is permanently attached to the circuit board by soldering. (5) The ESN write and change must be carried out at one of our manufacturing sites using a dedicated interface tool using special software, an interface box, and a PC. This interface tool will not be supplied to any vendor/distributor. (6) To prevent fraudulent cloning and ensure that uniqueness of each ESN is protected, this product uses the Industry Standard Authentication Algorithm. This algorithm incorporates random challenges using shared secret data calculations to prevent cellular system fraud.

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Mobile Communications Technology Center 5355 Mira Sorrento Place, Suite 250 San Diego, CA 92121 REQUEST FOR CONFIDENTIALITY CONTAINED WITHIN September 19, 2000 Federal Communication Commission Equipment Approval Service P.O. Box 358315 Pittsburgh, PA 15251-5315 Subject: Application for Cellular Mobile Telephone FCC ID: BGBMT345XFOR6A Gentlemen: We wish to submit our Application for Certification of the subject Dual Mode/Dual Band Handheld Transceiver. This equipment is a cellular handheld mobile telephone intended for operations under Domestic Public Cellular Radio Telecommunications Service governed by 47CFR22 Subpart K, and under the Broadband Personal Communications Service governed by 47CFR24 Subpart E. The equipment also conforms to 47CFR2, 47CFR15 and EIA/TIA Interim Standards IS-136 and IS-137. Enclosed pleas find the following documentation: I. Form 731 Application and Fee Processing Form for Certification (Fee Code EFT) and Confidentiality Request (Fee Code EBC) II. Check in the amount of 610.00 for fees related to Certification ($475.00/Fee Code EFT) and Confidentiality Request ($135.00/Fee Code EBC) CONFIDENTIALITY REQUEST- Pursuant to 47CFR0.459 of the Commission’s Rules, we request that: 1. Schematics 2. Block Diagrams Uploaded to FCC Web site be withheld from public disclosure. This material is CONFIDENTIAL information, and contains trade secrets and details that would not be typically available to the public. If you have any questions or require additional information, please contact me by telephone (858) 535- 8836, Facsimile at (858) 535-8801 or by e\-mail at [email protected]

Intertek Testing Services Date of Test: 5/20/00 Mitsubishi Wireless, TDMA/AMPS Cellular PhoneModel T300 EXTERNAL PHOTOGRAPHS FCC ID: BGBMT345XFOR6AFCC Part 22 & Part 24

Intertek Testing Services Date of Test: 5/20/00 Mitsubishi Wireless, TDMA/AMPS Cellular PhoneModel T300 INTERNAL PHOTOGRAPHS FCC ID: BGBMT345XFOR6AFCC Part 22 & Part 24 Intertek Testing Services Date of Test: 5/20/00 Mitsubishi Wireless, TDMA/AMPS Cellular PhoneModel T300 INTERNAL PHOTOGRAPHS FCC ID: BGBMT345XFOR6AFCC Part 22 & Part 24 Intertek Testing Services Date of Test: 5/20/00 Mitsubishi Wireless, TDMA/AMPS Cellular PhoneModel T300 INTERNAL PHOTOGRAPHS FCC ID: BGBMT345XFOR6AFCC Part 22 & Part 24 Intertek Testing Services Date of Test: 5/20/00 Mitsubishi Wireless, TDMA/AMPS Cellular PhoneModel T300 INTERNAL PHOTOGRAPHS FCC ID: BGBMT345XFOR6AFCC Part 22 & Part 24

Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 201292518FCC Part 2 SAR Evaluation 2.2 Configuration Photographs Worst-Case SAR measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 201292519FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925110FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925111FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925112FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925113FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925114FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925115FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925116FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement

Intertek Testing Services 05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925127FCC Part 2 SAR Evaluation APPENDIX A - SAR EVALUATION DATA Please note that the graphical visualization of the phone position onto the SAR distribution gives only limited information on the current distribution of the device, since the curvature of the head results in graphical distortion. Full information can only be obtained either by H-field scans in free space or SAR evaluation with a flat phantom. Powerdrift is the measurement of power drift of the device over one complete SAR scan. Intertek Testing Services 05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925128FCC Part 2 SAR Evaluation

Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 201292518FCC Part 2 SAR Evaluation 2.2 Configuration Photographs Worst-Case SAR measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 201292519FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925110FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925111FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925112FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925113FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925114FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925115FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement Intertek Testing Services05/23/99 Mitsubishi Wireless (MCTC), T300 Report # 2012925116FCC Part 2 SAR Evaluation 2.2Configuration Photographs – Continued Worst-Case SAR Measurement