I’ve a case which I saw several times posted in different forums. My Asterisk 16.1 sends outbound calls to an Athera SBC then to the Operator IMS. All calls drop exactly at 15mins.
Now it’s clear that SIP Timers r causing the issue from all the previous cases i checked on the Internet. Yet i tried almost all the proposed solutions without getting a successful result.
Example:
timers=no
qualify=no
timers=refuse
etc…
(Details r masked)
The 1st Bye Rcvd
W2: U 01/01/1970 21:07:14:890 sbc0: SIP-MSG:<<< SBC Rx from 10.241.94.112:5061 (transport=tls):BYE sip:bshtp-4f-aa9-cb02@10.191.0.46:5061;transport=tls SIP/2.0
Via: SIP/2.0/TLS 10.241.94.112:5061;branch=z9hG4bKszk1esb1htzsf0kdzhk12hktr;Role=3;Hpt=8fd8_16
Call-ID: 09386A1E-0001176A0007B001-741D8530
From: sip:0123456@ims.xx.yy;user=phone;tag=4f8q6dn6
To: sip:+77777777@ims.xx.yy;user=phone;tag=56771611-0001176A0007AFE8-741D8530
CSeq: 1 BYE
Max-Forwards: 65
10.241.94.112 = IMS Interface Remote IP
10.191.0.46 = The SBC WAN IP
I had this same problem with the operator stfc and it only resolved after I switched to pjsip, as it turns out that chan_sip does not have the UPDATE method, so the re-invite used to update the session was unknown due to a device in the operator’s environment that disconnected the call exactly at 15 minutes.
Hi. Thnx for ur reply. As mentioned above , non of the previously proposed solutions worked, including the timers tweak or on/off. The SIP UPDATE method is not supported in old sip module. I’m switching to PJSIP. Lets see.