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SECURE APPARATUS TO PROVIDE SECURE VOICE TELEPHONY VIA A RIGIDLY ATTACHED MICROPHONE AND SIDE MOUNTED EARPIECES

IP.com Disclosure Number: IPCOM000008277D
Original Publication Date: 1997-Sep-01
Included in the Prior Art Database: 2002-Jun-03
Document File: 1 page(s) / 48K

Publishing Venue

Motorola

Related People

Paul Kennedy: AUTHOR

Abstract

Secure Accessories provide Voice and Data Security to commercial Cellular Telephones by attaching externally to a Commercial-Off-The-Shelf cellular telephone, such as the Motorola" MicroTAC Elite" cellular telephone. Control and Data are passed to the Cellular Telephone through the Accessory port located at the bottom of the tele- phone. When the Accessory enters the secure mode of operation, the audio from the Cellular accessory port is intercepted, on both the transmit and receive sides, and is replaced with encrypted voice. The Cellular Telephone's internal Microphone and Earpiece are disabled when audio is routed in and out of the accessory port during Secure operation. Therefore, an additional Microphone and Earpiece must be provided by the Secure Accessory to enable voice communication. The apparatus of Figure 1 provides for this external Microphone and Earpiece as shown. The Microphone is enclosed within the Secure Accessory, and the Earpieces are rigidly attached, as shown, on each side.

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MOTOROLA Technical Developments

SECURE APPARATUS TO PROVIDE SECURE VOICE TELEPHONY VIA A RIGIDLY ATTACHED MICROPHONE AND SIDE MOUNTED EARPIECES

by Paul Kennedy

  Secure Accessories provide Voice and Data Security to commercial Cellular Telephones by attaching externally to a Commercial-Off-The-Shelf cellular telephone, such as the Motorola" MicroTAC Elite" cellular telephone. Control and Data are passed to the Cellular Telephone through the Accessory port located at the bottom of the tele- phone. When the Accessory enters the secure mode of operation, the audio from the Cellular accessory port is intercepted, on both the transmit and receive sides, and is replaced with encrypted voice. The Cellular Telephone's internal Microphone and

Earpiece are disabled when audio is routed in and out of the accessory port during Secure operation. Therefore, an additional Microphone and Earpiece must be provided by the Secure Accessory to enable voice communication. The apparatus of Figure 1 provides for this external Microphone and Earpiece as shown. The Microphone is enclosed within the Secure Accessory, and the Earpieces are rigidly attached, as shown, on each side.

Motorola and MicroTAC Elite are registered

trademarks of Motorola.

Earpiece Earpie

Microphone .--w

Fig. 1

0 Mo,orala. Inc. ,997

62 September I997

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