Overview - Grandstream Networks UCM6100 Manual

Busy Camp-on/Call Completion is a feature that the PBX will camp on a called party and inform the caller
as soon as the called party becomes available given the previous attempted call cannot be successfully
established.
UCM6100 starts to support this feature from firmware version 1.0.8.11. If a call fails to be established, the
caller could request the UCM6100 to camp on the called party by dialing the call completion request code.
Then the UCM6100 will give a call to the caller as soon as the called party becomes available. By
answering the call from UCM6100, a call from the caller to the called party will be initiated automatically by
the UCM6100 to complete the call.
The call completion can be configured for individual extensions as well as SIP register trunks.

When call completion is configured for individual extensions, the specific extension will get notified to
complete the call when the called extension is available.

When call completion is configured for SIP register trunks, any extension in one UCM6100 will get
notified to complete the call when the called extension in the peer UCM6100 is available if the
extension has call completion configured too.
This document describes how to configure call completion for the above two applications.

OVERVIEW

UCM6100 Busy Camp-on Guide Page 2 of 10