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Having a problem with a lack of ringback on transfered calls from the PSTN Call flow is as follows PSTN > FXO port on 2811 router > SIP Trunk > CUCM when transferring internal calls ringback works as expected when transferring calls from the PSTN bet...
Hi All I have an issue with a voice gateway config We have a SIP Trunk configured from CUCM to a 2811 Gateway with 2 FXO Ports. Incoming calls on the on the PSTN are routing correctly to CUCM Outgoing calls from CUCM to the PSTN are failing, when att...
Network Locale is already set to United Kingdom on all device pools Ive changed the codec to g711ulaw. That dosen't seem to have had an impact on the issue Regards Tom
The service parameter was already set to Use ANN for Ring Back. Adding the commandmidcall-signaling passthru doesn't seem to have made a difference Ive attached the debugs, I've annotated them. with the different call stages (call answered, transfer ...
Thanks for your suggestions Ive added the voice call send-alert config. As far as I can tell this has had no impact. The IOS version is 15.1(4)M12a. I can't find a more recent IOS. Regards Tom
1. During consult transfer the PSTN caller hears Music On Hold whist the "transferer" calls and speaks to the destination extemsion. I believe this is to be expected. During blind transfer the PSTN Caller hears silence while the extension is ringing ...
Managed to solve this one myself The call was being blocked by the TOLLFRAUD_App because the CUCM Server was not on a trusted list https://www.cisco.com/c/en/us/support/docs/voice/call-routing-dial-plans/112083-tollfraud-ios.html#topic1
