Voice interception system for mobile switching system

Details Voice interception system for mobile switching system Voice interception system for mobile switching system

2006-06-27

2006-06-27

Lee, Andrew C. (Department: 2663)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S395610, C370S395640, C370S474000

Reexamination Certificate

active

07068664

ABSTRACT:
In a voice interception system, a voice is intercepted by applying a function of a vocoder installed in a voice signal processor to a mobile switching station. This interception implies a conversion between an ATM cell of an AAL2pf, an AAL2, and an AAL1 (PCM), and a conversion between an ATM cell of an AAL2pf and an AAL1 (TFO) in a TFO case. The ATM cell of the AAL2 in the ATM network is picked up from an ATM switch and is intercepted. If a voice TFO CODEC method is used, the above functions are applied to a voice monitor and a voice signal, during a telephone call between mobile stations, is intercepted. It is possible with the disclosed invention to carry out a voice interception only by controlling the ATM switch without individual control of both the ATM switch and an STM switch.

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