3CX trunk not registered

Get outside calls working again.

3CX device
What you needAffects
Admin access to the 3CX Admin Console, and your provider's SIP detailsAll outside calls

1. Check the trunk

  1. Re-enter the loginOpen the trunk and re-enter the username and password from your provider.
  2. Check the serverMake sure the registrar and proxy details match your provider's settings.

2. Check the connection

  1. Check the internetMake sure the 3CX server can reach the internet.
  2. Run the firewall checkerRun the 3CX firewall checker from the dashboard, if available.
  3. Ask your providerAsk them to confirm the account is active and not blocked.

Troubleshooting

ProblemLikely cause and fix
403 ForbiddenThe username or password is wrong.
No responseThe server address is wrong, or a firewall blocks it.
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