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Cisco Bug: CSCsg38927 - Unknown RTP payload type occurred when negoshiate in G729b.

Last Modified

Feb 09, 2017

Products (1)

  • Cisco 3800 Series Integrated Services Routers

Known Affected Releases

12.4(11.2)T 12.4(3.9)T 12.4(4)T 12.4(6)T 12.4(9)T

Description (partial)

Symptom:

This symptom observed when forwarding call from IP Phone(G711) to IP Phone(G729) during talk with PSTN Phone via MGCP gw.
The following messages are observed in the MGCP GW.

= debug voip rtp packet=
RTP(1111): fs tx d=XXX.XXX.XXX.XXX(22222), pt=99, ts=YYYYYYYY, ssrc=ZZZZZZZZ

Conditions:

Cisco IOS Release 12.4(3.9)T or later.
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