Hi
We are facing a problem with CUCM 8.0(3) and 8.6(2a) when a remote destination calls in from an H.323 gateway to a busy IP phone. The mobile phone with the remote destination number just gets a ringback tone (Q.931 Alerting) as if the IP phone would not be busy. If the same mobile phone is not configured as a remote destination and calls in to the busy IP phone, it will get a busy tone (Q931 Disconnect with reason "user busy").
I have a found the following similar bug in the bug tool:
CSCts24630 - CUCM does not forward busy tone when RD in PSTN returns busy across MGCP DescriptionSymptom:
CAllManager does not provide busy tone to caller when remote destination in PSTN is busy. Remote destination sends disconnect message to CUCM with cause code 'user busy', however, CUCM does not forward this signal to caller and caller continues hearing ringback.
Conditions:
When MGCP gateway is involved, and remote destination in PSTN is busy.
Fixed-in: (8)
8.6(2.99000.92), 8.6(2.98000.56), 8.6(2.98000.24)
8.6(2.11001.1), 8.6(1.21013.1), 8.5(1.13900.4)
8.5(1.13038.1), 8.0(3.23040.1)
Has anyone faced CSCts24630 and upgraded to a fixed version? If so could you please check if you get a busy tone when calling from a remote destination?
By the way, does anyone if CSCts24630 should be fixed in 8.6.2.20000-2?
Any feedback is appreciated and many thanks in advance
Regards
Stefan
