Configuring Intercom Calls (Voice Call)

Intercom call can be used only with phones that support this feature.

This feature works with Nortel IP phones (when used with UNISTIM firmware) and Nortel digital phones (connected to a UCx Digital gateway).

This feature also works with a number of SIP phones that include LG Nortel, Aastra, Grandstream, Linksys/Sipura, Mitel, SNOM and possibly other SIP phones (not SIP ATAs).

Beside the phones above, any phone that is always set to auto-answer should also work.

To enable intercom calls (also known as the Voice Call feature), perform the following steps:

  1. Open the UCx Web-based Configuration Utility
  2. From the PBX tab, select PBX Configuration
  3. From the left side column, select Feature Codes
  4. On the Feature Code Admin page, scroll down to locate the section Paging and Intercom
  5. Enable the Intercom prefix feature (the default code is *80) by setting the value in the drop-down list box beside this feature to Enabled
  6. To allow users to control if intercom calls to their sets are allowed or disallowed (from all extensions or from specific extensions), you can also enable the User Intercom Allow and User Intercom Disallow features


To disable all intercom calls to their phone, users can dial the code *55. To enable all intercom calls to their phone, users can dial the code *54.

To disable intercom calls from a specific extension, users can dial the feature *55 followed by the extension (for example *55300 to disable intercom calls from the extension 300). To enable intercom calls from that specific extension later, users can dial the feature *54 followed by the extension.