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- Cannot register SIP phone.
- Double check that you have configured sip.conf. Try command asterisk -rvx 'sip show peers'. You should see your peer.
- Registered, but cannot call anywhere (even test).
- Check your codec settings. There should be same codec on phone and in sip.conf
- Registered, can call test, but cannot call outside
- Check zaptel.conf, zapata.conf and rights to /dev/zap for your asterisk process. Try asterisk -rvx 'zap show status' , asterisk -rvx 'pri show span 1'