Method for communications between mobile units using single and

Details Method for communications between mobile units using single and Method for communications between mobile units using single and

1994-11-08

1997-03-04

Bost, Dwayne D.

Telephonic communications

Audio message storage, retrieval, or synthesis

Multilingual system or operation

379 59, 455 331, H04Q 722, H04Q 738

Patent

active

056087799

ABSTRACT:
Communication systems having single switching center configurations (100) or multiple switching center configurations (200) detect the occurrence of a mobile-to-mobile call using control messages. When it is determined that the call is mobile-to-mobile, a switching center (101) in the single switching center configuration instructs transcoders (121-123) to operate in a transparent mode. Likewise, when it is determined that the call is mobile-to-mobile, multiple switching centers (201-203) the multiple switching center configuration instruct transcoders (221-223) to operate in the transparent mode. While operating in the transparent mode, the transcoders do not convert compressed digital voice (402) to non-compressed digital voice (401) and vice versa, but do allow the compressed digital voice to pass through as bit-stuffed compressed digital voice (403) and vice versa.

REFERENCES:
patent: 5299198 (1994-03-01), Kay et al.
patent: 5475689 (1995-12-01), Kay et al.

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