Multiplex communications – Data flow congestion prevention or control – Control of data admission to the network
Reexamination Certificate
2011-08-16
2011-08-16
Hong, Harry S (Department: 2614)
Multiplex communications
Data flow congestion prevention or control
Control of data admission to the network
C370S352000, C370S395200, C370S401000, C709S225000, C709S238000
Reexamination Certificate
active
08000236
ABSTRACT:
A media proxy receive a first message from a near end of a path of a communications session, and before receiving a corresponding message from a far end, the media proxy is arranged to detect a blocking situation where another device in the path is awaiting the first message before forwarding the corresponding message. Detecting such a blocking situation enables it to be overcome, and enables the communication session to proceed. The media proxy can send a probe message to discover if there is another media proxy along the path causing the blocking. This is useful where the only information about the far end is the media path which is in the call set up, e.g. IP address and port. Sending the probe message can be under the control of a call server.
REFERENCES:
patent: 7643412 (2010-01-01), Mitchell et al.
Aoun Cedric
Louis Levay
Mitchell Julian
Barnes & Thornburg LLP
Hong Harry S
Nortel Networks Limited
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