IP Office Basic Edition - Web Manager R11.1: Groups > Groups
This group is only available in PBX mode. The group has one default member, the first extension on the system, however other extensions can be added if required.
This group is used as the default destination for incoming calls on all types of trunk. In addition you can call, transfer and forward calls to the group by dialing the operator group number 75.
The group is a Ring All group, that is a call to the group will alert all the available group members (those not already on a call) until the call is answered.