Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1996-09-16
1999-11-16
Dolinar, Andrew M.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455560, 370328, 370349, H04Q 722
Patent
active
059873272
ABSTRACT:
A terminating switching center (101-103) receives an initial address message from an originating switching center (101-103). Responsive to the initial address message, the terminating switching center establishes communications with a wireless unit (118-120). When a called party category corresponding to the wireless unit is compatible with a calling party category included in the initial address message, the terminating switching center instructs at least one terminating transcoder (121-123) to operate in a transparent mode. An answer message including the called party category is sent back to the originating switching center. When the calling and called party categories are compatible, the originating switching center instructs at least one originating transcoder (121-123) to operate in a transparent mode. Additionally, communication path identifiers are included in the messages exchanged. In this manner, double transcoding can be eliminated and resources more efficiently used when executing a mobile-to-mobile call.
REFERENCES:
patent: 5577029 (1996-11-01), Lu et al.
patent: 5608779 (1997-03-01), Lu et al.
Lev Valy
Urs Kamala D.
Dolinar Andrew M.
Jacobs Jeffrey K.
Moreno Christopher P.
Motorola Inc.
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