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The first step to troubleshooting why an inbound call is not working is to verify that the call was detected on the Sangoma card, from the analog line.
To do this, use the wanpipemon utility that is inside the Sangoma Driver (Wanpipe).
Run the following wanpipemon command on your Linux command line:
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Change X to the channel the inbound call is coming on. This should be done on an FXO channel/line. Remember that there are 2 channels per physical port on the Sangoma card.
w1g1 is used to specify the entire analog card, assuming there is only one Sangoma card in your system. If you have more than one Sangoma card in your system, change w1g1 to wXg1 (where X is the card number as )
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To watch the voltage live, while you are making your inbound call attempt, run the same command above but with the watch command:
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Change X to the channel number in question, same analogy as above description of wanpipemon command.
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Inside your Asterisk CLI type the following command to display all your dahdi/Sangoma channels:
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You should see something similar to the below (disregard the quantity of channels as your setup may have more/less channels)
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To log into the asterisk cli, simply type the following command on the Linux command line:
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It would be a good approach to change the dialplan to something simple that plays back and audio file when calling in.
This way you can verify if the call is able to reach the dialplan and process again.
To do this:
open your dialplan file: /etc/asterisk/extensions.confconf
At the very top of the file copy and paste the below three strings (change the specific variables that are necessary for your setup)
Code Block [ inbound-context ] exten => s,1, answer() exten => s,n, playback demo-congrats() exten => s,n, hangup()
change inbound-context to the context used in your system.
To find the correct context, open up /etc/asterisk/chan_dahdi.conf (or /etc/asterisk/dahdi-channels.conf for FreePBX distro/Elastix), and look for the name beside the word 'context'.
Below is a picture of the what is meant.
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Save the dialplan now and reload the asterisk dialplan by typing the following inside the Asterisk CLI:
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Make your inbound call attempt. Do you hear a greeting (the demo-congrats file)? If you do, this means the entire issue for your inbound calling was due to a misconfiguration of your dialplan, or your sip endpoints. You may now remove the text dialplan (what was added above) and proceed to resolve your dialplan/sip end point configuration.
If you do not hear a greeting, the will want to contact sangoma support directly at support.sangoma.com