Buch1 > Functions, Uses, Concepts > Call Channel Reservation
Call Channel Reservation
If a group of subscribers should have the option of making an external call at any time, the call channels on an external ISDN connection or a VoIP account can be reserved for the group. This call channel is only available for subscribers who are logged in this group outgoing.
Proceed as follows for configuration:
Switching call channel reservation on.
-Using the Configuration Manager (page Groups > Properties > Reachability)
Configuring call channel reservation configuration dependent.
-Using the Configuration Manager (page Groups > Profiles > ... > Reachability)