Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate
2005-06-14
2005-06-14
Ho, Duc (Department: 2665)
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
C370S514000, C375S368000, C708S212000
Reexamination Certificate
active
06907045
ABSTRACT:
A method and apparatus for triggering data-path conversion utilizing PCM bit robbing signalling. The method and apparatus permits the pass-through of compressed voice packets over a PCM stream between dissimilar interconnected networks or dissimilar payload specifications in the interconnected networks, and also provides the capability to convert the packets to a different payload specification between the networks. Once a voice path is established between the two networks, the incoming PCM data stream is monitored for a voice synchronization pattern which appears periodically in a predetermined bit position in the PCM samples. Upon detection of a matching voice synchronization pattern, a pass-through mode for the voice data between the networks is initiated. A data or payload conversion operation may also be initiated on detection of the matching voice synchronization pattern.
REFERENCES:
patent: 5228036 (1993-07-01), Okamoto et al.
patent: 6272194 (2001-08-01), Sakamoto
patent: 6728239 (2004-04-01), Kung et al.
Lee Ick Don
Robinson Bruce W.
Ho Duc
Ridout & Maybee LLP
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