To assign fax group to line groups:
If you are not already there, navigate to the Line Groups menu by selecting (S) System Maintenance, (R) Reconfiguration, (R) Reconfigure System, and then (G) Offline Menu.
From the Offline Menu, select (G) Define Line Groups, Fax Groups.
Select (G) Current Group= and enter a number (1-24) for the line group to which you want to assign a fax group.
Select (C) Fax Group connections for current line group. The system displays Line Group and Module (For example: Line group X, Module Y, where X is the line group that you selected in step 3, and Y is the first number of the first module that has voice ports in line group X.)
Enter the fax group number of the fax group to be connected with the lines of the current line group on the specified module. You can assign a fax group to more than one line group.
Repeat this procedure for each line group that you want to associate with fax groups.
Exit to the NuPoint Voice Configuration Offline Menu.
Activate the inactive configuration to make the changes take effect.
Assign the fax feature bits to the FCOS and LCOS that control the behavior of mailboxes that will be fax-enabled.