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Cisco Bug: CSCup80803 - CUBE No Way Audio - Early Offer with SDP passthrough & Two 18x messages

Last Modified

Feb 02, 2017

Products (1)

  • Cisco IOS

Known Affected Releases

15.2(4)M4.5

Description (partial)

Symptom:
No Way audio when dialing out through CUBE using Early Offer.  After hold/resume on IP phone, two way audio is heard.

After call is connected, "show voip rtp conn" will look like this:

Show voip rtp conn:
 
3     2217464    2217466    21352    26732  10.10.10.10                      10.0.149.79    <---- looks good (inside leg)
4     2217466    2217464    21356    0      10.20.20.20                   0.0.0.0        <----- Oh no (outside leg)

Conditions:
- sdp passthrough configured
- Two provisional (18x) messages.  First 18x has TO tag 1.  Second 18x message and 200OK has TO tag 2.
- Early offer through CUBE
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