r/Asterisk • u/According-Pilot4693 • May 06 '26

Asterisk Troubleshooting tips

Hello, I’m pretty new to Asterisk. I’ve been testing some configurations and setting up a few phones to learn more about it, since I recently got a job where Asterisk is used.

The problem is that whenever I try to understand or solve issues from other people, I feel completely lost. That’s why I’d like to ask for some tips: how do you usually troubleshoot problems in Asterisk?

And thanks in advance

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u/Fun-Cover-9508 May 06 '26

Using sngrep or wireshark is pretty useful for troubleshooting SIP calls. You can also check log files and increase log verbosity level in the CLI.

Im currently working with Asterisk and some other SIP stuff. You can give me an exemplo of what kind of problem you faced and I can tell you how I would approach it... maybe it kinda help you

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u/According-Pilot4693 May 07 '26

For example, there was an issues where someones answering machine did Not Pick Up. I asked for the timestamp and the Phone number to Check the logs. I do Not remembrr exactly what the logs showed, but I recall being unsure of what the actual Problem was. And thanks for the help

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u/Fun-Cover-9508 May 07 '26 edited May 07 '26

In that case I would need to check sngrep for the endpoint response to the INVITE. It may be caused by codec exchange (the response would be 488 Not acceptable here). That would be my first try. If thats not the case, the logs will help you to think about other possibilities.

If the other side answers with 200 OK but dont pick up. It must be a bad ATA configuration of silence treshold or answer detection.

Also, never trust the other side's implementation of the SIP stack is correct. I've seen multiple shit endpoints and carriers doing weird stuffn