04-28-2010 10:15 AM - edited 03-15-2019 10:31 PM
I have SIP trunk to my GW connected to PSTN.
I noticed strange issue which is when i call somebody on his mobile phone and his phone is closed or out of coverage I hear ringback tone instead of PSTN normal messages.
I have CUCM 6.1.3
any ideas..
BR,
Ahmed Kamal
05-06-2010 07:29 PM
Do you have SIP Trunk to PSTN?
Or which type of connection to PSTN you use?
sometimes Telco sends instead of alerting a progress message with progress tones
Are we suppose to hear VM right or out of service?
Which type of GW?
Which IOS version
Thanks
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