Apparatus and method for air traffic services voice signaling

Details Apparatus and method for air traffic services voice signaling Apparatus and method for air traffic services voice signaling

2005-07-25

2009-02-03

Yao, Kwang B. (Department: 2616)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via frequency channels

C370S537000, C370S907000, C370S401000

Reexamination Certificate

active

07486701

ABSTRACT:
A method for encoding ATS-QSIG standard-based content for transmission over a 56 kb/s clear channel. The method encodes each of the three 16 kb/s ATS-QSIG voice sub-channels on to corresponding 16 kb/s voice sub-channels in the 56 kb/s clear channel. The method encodes the 16 kb/s ATS-QSIG data sub-channel on to a 8 kb/s data sub-channel in the 56 kb/s clear channel. Using the method, the ATS-QSIG standard can be used in a network such as, for example, the North American PSTN that utilizes 56 kb/s clear channels. In addition, a system for adapting ATS-QSIG standard-based content transmitted on a 64 kb/s clear channel for transmission on a 56 kb/s clear channel and a system for adapting ATS-QSIG standard-based content transmitted on a 56 kb/s clear channel for transmission on a 64 kb/s clear channel. The systems can be used, for example, as gateways to permit ATS-QSIG standard-based communications between 56 kb/s and 64 kb/s based networks.

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