We are having an issue with so far 7962's some are advertsing G711 and others are stuck on G722 when being transfered to a UCCX or voicemail. User being transfered receives a busy.
Software Version: 184.108.40.20600-5
Problem Details: When internal phone transfers an internal extension to a script or
voicemail phone gets busy at transfer. This is not happening for all phones only a select
Example of failure (traces attached)
Extension 55963 calls extension 55953
55963 answers call and hits transfer
55963 types 61800
55963 hears ring and UCCX Script associated with 61800
55963 hits transfer to connect 55953
55953 receives busy
Example of success (traces attached)
Extension 55953 calls extension 55963
55953 answers call and hits transfer
55953 types 61800
55953 hears ring and UCCX Script associated with 61800
55953 hits transfer to connect 55963
55963 receives busy
TAC thought I might be hitting a firmware bug CSCtq97254 so I upgrade one of the phones to version 9.2.3, now if I disable G722 everything works fine but if G722 is enabled I get the same issue.
Here are traces before and after the phone is upgraded
I went through the traces collected for the calls before and after the firmware upgrade.
For the failed call (even after the firmware upgrade), I see no difference in the signaling. The phone still advertises only 1 codec (i.e. G722) as a part of its capabilities set because of which the call fails.
So, it appears that even after the upgrade, the phone doesn’t advertise all the codecs. As you mentioned that disabling the Advertise G722 codec makes the call to work, I would be really interested to know the difference for this instance.
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