Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2011-08-09
2011-08-09
Ton, Dang T (Department: 2475)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S260000, C370S352000, C370S466000, C709S204000, C709S231000, C375S240030, C375S240240
Reexamination Certificate
active
07995590
ABSTRACT:
A method includes receiving a Real-Time Transport Protocol (RTP) packet at a first gateway and translating the RTP packet into a H.221 frame. The H.221 frame includes a H.263-compressed video bitstream. The H.221 frame may also include a H.221 Bit-Rate Allocation Signal (BAS) message to communicate RFC2190-compliant fragmentation boundary information containing Macroblock (MB) boundary to a second gateway, if there is no picture start code (PSC) or Group of Block start code (GBSC) at a start portion of the RTP packet. The method further includes transmitting the H.221 frame from the first gateway to the second gateway; and fragmenting the H.263 video bitstream contained in the H.221 frame at a PSC, a GBSC, or a Macroblock (MB) boundary contained in the H.221 BAS fragmentation message.
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Cisco Technology Inc.
Marger & Johnson & McCollom, P.C.
Randhawa Mandish
Ton Dang T
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