I’m running FreePBX’s last version with 2 extensions, both Sangoma phones (one 705 and one 305). As you can see from the below, it seems that one of the extension only connects for a short time (<1 min) before it gets disconnected. This happens about every 8 minutes.
The extension that fails is 110
Asterisks Logs are not very helpful:
[2020-03-08 23:06:52] VERBOSE[10300] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56012 is now Reachable. RTT: 100.087 msec
[2020-03-08 23:07:55] VERBOSE[6092] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56012 is now Unreachable. RTT: 0.000 msec
[2020-03-08 23:14:23] VERBOSE[25486] res_pjsip_registrar.c: Added contact 'sip:[email protected]:56013' to AOR '110' with expiration of 900 seconds
[2020-03-08 23:14:23] VERBOSE[25486] res_pjsip_registrar.c: Removed contact 'sip:[email protected]:56012' from AOR '110' due to remove existing
[2020-03-08 23:14:23] VERBOSE[10300] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56012 has been deleted
[2020-03-08 23:14:23] VERBOSE[10300] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56013 is now Reachable. RTT: 57.302 msec
[2020-03-08 23:15:26] VERBOSE[25486] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56013 is now Unreachable. RTT: 0.000 msec
[2020-03-08 23:21:53] VERBOSE[25486] res_pjsip_registrar.c: Added contact 'sip:[email protected]:56014' to AOR '110' with expiration of 900 seconds
[2020-03-08 23:21:53] VERBOSE[25486] res_pjsip_registrar.c: Removed contact 'sip:[email protected]:56013' from AOR '110' due to remove existing
[2020-03-08 23:21:53] VERBOSE[6092] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56013 has been deleted
[2020-03-08 23:21:54] VERBOSE[6092] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56014 is now Reachable. RTT: 68.774 msec
[2020-03-08 23:22:56] VERBOSE[25486] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56014 is now Unreachable. RTT: 0.000 msec
[2020-03-08 23:29:24] VERBOSE[6092] res_pjsip_registrar.c: Added contact 'sip:[email protected]:56015' to AOR '110' with expiration of 900 seconds
[2020-03-08 23:29:24] VERBOSE[6092] res_pjsip_registrar.c: Removed contact 'sip:[email protected]:56014' from AOR '110' due to remove existing
[2020-03-08 23:29:24] VERBOSE[10300] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56014 has been deleted
[2020-03-08 23:29:24] VERBOSE[10300] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56015 is now Reachable. RTT: 68.072 msec
[2020-03-08 23:30:27] VERBOSE[6092] res_pjsip/pjsip_options.c: Contact 110/sip:[email protected]:56015 is now Unreachable. RTT: 0.000 msec
The phone’s IP address shows as H3G mobile data. Is that correct? If so, is the working extension behind the same 4G router and on the same LAN?
It appears that the NAT association is being lost between registrations, not surprising since the interval is ~450 seconds (the phone reregisters after half of the 900 second expiry). But what is surprising is that the very first qualify fails, only 60 seconds after registration.
As a test, try changing Qualify Frequency for the extension from 60 to 20. If that doesn’t help, post a new log.
Another thing that may help is changing Maximum Expiration from 7200 to 90. If no luck, post a log of that, too.
I’m puzzled why the frequent qualify did not help. After registration at 23:28:49, there was presumably a qualify (OPTIONS) sent at about 23:29:09 that did get a response, but the NAT association apparently timed out anyhow and the next qualify at ~ 23:29:29 got no response and it was marked unreachable at 23:29:32. I’m guessing that the NAT timeout is ~30 seconds.
Possibly, getting the phone to register every 20 seconds will help, IMO not likely but it’s easy to try. Set Minimum Expiration to 20 and Maximum Expiration to 40.
If no luck, back out those changes and try keep-alive on the phone. See http://www.surevoip.co.uk/support/wiki/howtos:setup:sangoma_s_series
the section “Set SIP keep-alive”. Set it to 20. If you are using the Endpoint Manager or another autoprovision method, do it there, as any changes you make manually on the make on the phone will get overwritten. Sorry that this is vague, but I have no experience with these phones.
If that also doesn’t work, there may be a setting in the 4G router that will help. Failing that, I’m pretty much out of ideas. Conceivably a VPN connection or a different router model would work.
