Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate
2003-05-09
2008-12-23
Corsaro, Nick (Department: 2617)
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
C370S470000, C370S471000, C370S473000, C370S474000, C375S340000
Reexamination Certificate
active
07468987
ABSTRACT:
Methods and apparatus for identifying a frame format associated with a DS3 data signal are disclosed. According to one aspect of the present invention, a method for detecting a frame format of a signal which has a plurality of frames includes receiving a first frame and determining when a parity associated with the first frame and a first bit associated with the first frame indicate that a first counter is to be incremented. The first counter is incremented when it is determined that the first counter is to be incremented. The method also includes determining when the signal is of a first format through a comparison of the first counter with a first threshold.
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www.protocols.com/pbook/ds3.htm, “DS-3 ATM Physical Interface”, May 6, 1999, p. 1.
http://www.teracomm.com/appnotes/whitepapers/DS3 Fundamentals.pdf, “The Fundamentals of DS3”, 1999, Acterna (TTC, a division of Dynatech, LLC).
Bennett Marc A.
Wongsonegoro Harris
Aka Chan LLP
Cisco Technology Inc.
Corsaro Nick
Kasraian Allahyar
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