Inbound calls disconnect after 60 seconds ringing....

[CiscoRunner]

Hi Folks,

Is there a global parameter in CUCM that issues a disconnect after ringing Cisco phones for 60 seconds?

Example, if you ring a cisco phone (using external DDi number), the call will drop after 60 seconds of ringing. I was thinking it may be related to the 'TLS Handshake timer' in the Enterprise Parameters. It only seems to happen from calls in from the PSTN though

Thanks..

[CiscoRunner]

Ok so I think I have narrowed this down to be the carrier. AS when I used a phone number from a different carrier the timer was increased to 90 seconds...SO i guess I need to speak with the carrier...