PTT/PTS signaling in an internet protocol network

Details PTT/PTS signaling in an internet protocol network PTT/PTS signaling in an internet protocol network

2011-04-05

2011-04-05

Tran, Tuan A (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Convertible

C455S458000, C455S445000, C455S466000, C455S517000, C455S518000, C455S074100, C455S552100, C455S553100, C709S230000, C709S231000, C709S232000, C370S252000, C370S465000, C370S466000, C370S467000

Reexamination Certificate

active

07920831

ABSTRACT:
Conveying Push-To-Talk and Push-To-Signal (PTT/PTS) information over an IP network through signaling bits defined in and propagated with the Real-Time Protocol (RTP) stream allows the PTT/PTS information to remain synchronized with the voice packets of the stream. The maintenance of synchronization of PTT/PTS signals and voice packets eliminates problems arising from failure of synchronization between the two classes of packets, notably the “shoot/don't shoot” problem. The signaling bits employed were formerly used to convey legacy network information, but are no longer in active use in the Voice-over-IP (VoIP) realm, since VoIP provides alternative pathways for their information.

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