Calling to a switched off mobile phone ip phone hears ringback tone for a while

[arafat.khan]

Hi,

I am using CUCM version 12 and ISR4321 as a voice gateway. There is a E1 connection as well as SIP and FXO connection. Everything is running fine but if I call to a switched off mobile phone from ip phones it hears ringback tone for a while for both E1 and SIP. So it is quite annoying. Can anybody help me regarding this

[Jaime Valencia]

Debug the call and see what you get back from your telco for that call, if the telco doesn't provide a message that the device is not available, you would need to discuss this with them.

You depend on what you get back from the telco.

[arafat.khan]

Hi Jaime,

Thanks for your reply. But I am new at voice. Could you please suggest the command for debug. And I dont think it's a telco problem because in previous system it was ok with CUCM 7 and voice gateway 2900 series.

We just migrate to new system and the problem is happening.

[ahmedelrayess]

did you find the solution to the issue