Outbound calls fail in 3CX

Calls to outside numbers don't connect or get a busy tone.

3CX device
What you needAffects
Admin access to the 3CX Admin ConsoleCalls to outside numbers

1. Check 3CX

  1. Check the trunkMake sure the trunk shows as registered (green) on the dashboard.
  2. Check the outbound rulesOpen Outbound Rules and make sure a rule matches the number you dialled, for example numbers starting with 0.
  3. Check caller IDCheck the caller ID the rule sends is one your provider allows.

2. Find the reason

  1. Look at the callCheck Call History or the logs for the error your provider sent back.
  2. Ask your providerGive them the time of the call and the error.

Troubleshooting

ProblemLikely cause and fix
Some numbers work, others don'tAdd a rule for the number type that fails, such as mobiles or 13 numbers.
All calls failThe trunk is down, or the account has run out of credit.
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