Recently I have a problem bother me long time, I use pjsua to send a sip call to an ip phone, and then after almost 20 sec, my ip phone start ringing. When this problem occur, I checked the asterisk log, I saw many of sip accounts re-registered.
This problem occur very randomly, last time is 4 months ago, and last 2 time is 6 months ago, I restart asterisk then it work normally, but yesterday this problem occur 10 times in one day, I restart asterisk but few minutes later, the problem occur again.
My system has almost 1700 sip accounts, run in a local network.
My server is Cisco C220 M4, asterisk version is 14.3.0.
Could anyone give me some suggestion?
Following pictures are screenshot of asterisk log and extension.conf and sip.conf
Lots of accounts re-registered
receive sip invite then 20sec later start dialing
dial plan is very simple