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Outbound calls fail on a UCM

Calls to outside numbers don't connect.

Grandstream UCM device
What you needAffects
Admin access to the UCM web portalCalls to outside numbers

1. Check the UCM

  1. TrunkCheck the trunk status under Extension/Trunk → VoIP Trunks.
  2. PatternCheck the outbound route pattern matches the number.
  3. PermissionCheck the extension's permission level is high enough.
  4. Caller IDCheck the caller ID is one your provider allows.

Troubleshooting

ProblemLikely cause and fix
Some numbers failAdd a pattern for that number type.
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