With Trunk Group Night Service, an attendant or a designated Night Service telephone user can assign one or all trunk groups to Night Service mode. When a user activates Night Service, trunk groups that are assigned a Trunk Group Night Service termination change to Individual Trunk Night Service mode. The system redirects the calls that come into the trunk group to the group’s designated NSE. Incoming calls on trunk groups that are not assigned to Trunk Group Night Service are queued in the attendant queue. If the call remains unanswered during the Night Service Disconnect Timer interval, the incoming trunk disconnects.

A user can also assign all the trunk groups to the Night Service mode at the same time. Then all the trunk groups are in the System Night Service mode. The system redirects any incoming calls made on the trunk groups to their designated NSE for the trunk group. To assign all the trunk groups to System Night Service, the user presses the System Night Service button on the principal attendant console or the Night Service button on a designated phone. You can assign a Night Service button to only one telephone.

To activate Trunk Group Night Service, you press the individual Trunk Night Service buttons on the attendant console or on a telephone. You can assign Trunk Night Service buttons on more than one telephone.