Trunk Security

Secure the trunks on the PBX.

To prevent unauthorized international calls and long-distance calls through the PBX trunks, you need to take steps to protect your trunks on the PBX.

Outbound Route Permission

When you are setting up outbound routes on your PBX, you need to consider outbound route permission for different users.

We suggest you to set up different outbound routes for different trunks, and assign outbound route permission to the users.

For example, you can set up outbound routes as below:

  • Outbound route for local calls

    Select the trunk that is least-coast for local calls, and set the outbound route permission for all the users.

  • Outbound route for long-distance calls

    Select the trunk that is least-coast for national calls, and set the outbound route permission for all the sales and managers.

  • Outbound route for international calls

    Select the trunk that is least-coast for international calls, and set the outbound route permission for the international sales who need to make international calls.

Disable Guest Calls

Go to Settings > PBX > General > SIP > Advanced, uncheck the option Allow Guest.

If Allow Guest is checked, the PBX will allow unknown/anonymous incoming calls.

Important:
  • The unknown calls may be charged to the bill of your trunks.
  • Do NOT enable Allow Guest optionally.
  • Be aware! If the number is not known, don’t call back.

Outbound Restriction

Yeastar S-Series VoIP PBX has a default rule to limit how many times a user can make outbound calls during a certain time period. The default rule limits users to make maximum 5 outbound calls in 1 minute.

If a user makes outbound calls over the limit, the extension will be locked and has permission to make internal calls only.

Go to Settings > PBX > Call Control > Outbound Restriction to edit the rule or add a rule.