Telephony communication via varied redundant networks

Details Telephony communication via varied redundant networks Telephony communication via varied redundant networks

2006-03-14

2006-03-14

Pezzlo, John (Department: 2662)

Multiplex communications

Diagnostic testing

Determination of communication parameters

C370S353000, C370S400000

Reexamination Certificate

active

07012898

ABSTRACT:
A switched telephone network is arranged in a manner to enable packet voice communication between telephone terminals via multiple redundant packet switched networks. The packet switched networks may utilize different protocols, be operated by different entities, and have primary functions other than voice communication. One example of such a network may be internetworked networks, such as the Internet. One example of an alternate packet switched network may be a network whose primary function is control of a circuit switched telephone network. The common channel interoffice switching system (CCIS) of a public switched telephone network (PSTN) is one such example.

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Keiser et al., “Digital Telephony and Network Integration”, 1995, Chapman Hall, Second Edition, pp. 426-428.

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