Redundancy mechanisms in a push-to-talk realtime cellular...

Details Redundancy mechanisms in a push-to-talk realtime cellular... Redundancy mechanisms in a push-to-talk realtime cellular...

2006-05-10

2010-02-16

Feild, Joseph H (Department: 2627)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S423000, C455S422100, C455S445000, C455S450000

Reexamination Certificate

active

07664493

ABSTRACT:
Redundant mechanism in a push-to-talk (PTT) realtime architecture. Redundancy is provided in core delivery systems, which are employed for the emulation of “walkie-talkie” service with circuit switched duplex calls in the carrier network. The disclosed architecture provides for geographic and/or realtime mated redundancy. In one implementation, realtime redundancy is offered in an active-active scenario, although other scenarios are possible. Similarly, redundancy is provided in a roaming gateway implementation of the PTT network.

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