📇 Extension
🔒 Extension Security
🔄 Limit Outbound Call Frequency of an Extension

Limit Outbound Call Frequency of an Extension

To secure enterprise communications and reduce the economic loss if the PBX system has been hacked, we recommend that you set up rules to restrict the extension's outbound call frequency.

Procedure

Follow these steps to set up call frequency limits:
1

Log in to the IZT Cloud PBX web portal, go to Extension and Trunk > Extension, and edit the desired extension.

2

Click the Security tab.

3

Scroll down to the Call Restrictions section. In the Outbound Call Frequency Restriction drop-down list, select the desired rule(s).

4

Click Save and Apply.

Default Rule: The PBX has a default rule Default_Ext_Outbound Call Frequency, which limits extension users to a maximum of 5 outbound calls in 1 second. You can add new rules according to your needs.

Result

If an extension exceeds the outbound call frequency restriction, the following will happen:
Users cannot make outbound calls even if the extensions are selected in outbound routes.
Note: Emergency Calls like 911 are not restricted.

On the Extension list, Trunk Error is displayed in front of the extension.

The system sends a notification to inform the notification contacts of an Outbound Call Frequency Exceeded event.

Example of extension list with restriction indicator:
Disable Outbound Calls Screenshot

💡 To cancel the restriction of outbound calls, click Edit to edit the extension, go to the Security tab, and unselect the checkbox for Disable Outbound Calls in the Call Restrictions section.

⏳ Limit Call Duration of an Outbound Call🛠️ Manage Extensions