Ring No answer incoming call from PSTN drop after exact 60 Sec!!. The internal call rings for 120 sec and then gets forwarded to voicemail as per CUCM configuration and I would like to achieve this for incoming PSTN call.Call from cell phone Verizon/ATT drops after 60 Sec. I also have noticed call from PSTN landline call kinda drop at 60 Sec then silent for around 2 Sec and start ringing again. Hah! Isn't it awesome!!!
Not sure, what causing them to send CANCEL and why exactly at 60Sec ???!
Cisco CNS blamed on ITSP which may make sense because ITSP sends CANCEL message first.And ITSP blaming on us. Huh!
Min-SE: 60
Session-Expires: 1800;refresher=uac
Max-Forwards: 68
Content-Length: 242
Content-Disposition: session; handling=required
Content-Type: application/sdp
I have opened a ticket with Cisco and also with my ITSP collected some log. Will share with you guys soon. Stay tuned.
https://tools.ietf.org/html/rfc4028
