TIPS PBX is sending BYE packets ending conversations

[Robert Stolorz]

I'm trying figure out why my PBX is dropping calls. My SIP carrier is callcentric. They said all the dropped calls I'm getting are from my PBX sending BYE packets.

I can't seem to find this in the logs either.

Is there any way to trace down what is going on. Seems like this happens when there are several calls coming in at once.

PBX Version Info:
CentOS release 6.4 (Final)
FreePBX Core Version: 2.11.0.6

System is running on a dual core machine.
Celeron(R) CPU 847 @ 1.10GHz

 

[billsimon]

Yes. Go to the Asterisk CLI (`asterisk -r` after you log in as root) and turn on SIP debugging with `sip set debug on`. Now place a call that exhibits the behavior, and right afterward, `sip set debug off`. If you don't turn it back off soon, you'll have a huge log file.

The SIP debug logs will be mixed in to the full log, which is convenient because then you can see the SIP packets along with the affiliated parts of the dialplan that the call is stepping through.

 

[briankelly63]

Also open an account with Anveo Direct where you can see the SIP trace on every call right in their CDR report online. Never trust one carrier.

 

[Robert Stolorz]

The only problem is that this happens a few times a day. It is impossible to recreate this issue consistently. Are there any settings I can adjust to troubleshoot or at least get closer to narrowing down what is going on?

Is there any way the phones are timing out? I did "sip show peers" and the phones range between 5-15ms ping.

 

[kenn10]

If the call that gets disconnected is on hold or muted during a conference call, Asterisk tends to disconnect the call because it sees no packets from the phone. There are ways around this. Search the forum for "dropped calls" to see if your issue has already been addressed.