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