Callback – System Programmable lets you program the destination of a matured callback set against a key line or multicall line group. The destination can be programmed so that a callback matures either at the prime member in the group, or at any member in the group.
None
Program Callback Activation
in the System
Options form.
Supported on all devices.
With Prime Activation set:
A callback is honored by the prime appearance of the group.
With Group Activation set:
Any activity of a member of a group with a callback set causes the callback to be honored.