3Com SuperStack 3 NBX Administrator's Manual page 271

Adding an E1 Group
You add a new group when you need to assign common characteristics
to several E1channels.
To add a digital line card group:
1 On the Digital Line Cards tab (Figure 113), from the Select Device Type
pull-down list, select ISDN PRI Group List and then click Apply.
2 In the dialog box that appears, click Add.
Figure 101 shows the ISDN PRI Add Group dialog box.
Figure 101 Add Group Dialog Box — E1 ISDN PRI
To modify ISDN PRI group parameters:
1 Type a name for the new group in the Group Name field.
2 To enable the transfer of incoming calls to another line card port, select
Unrestricted from the Trunk to Trunk list. To disable this feature, select
Restricted.
3 Use the AutoExt fields to select the extension to which calls are routed
when they are not answered. You can select different extensions for
different times of the day. The default settings route all calls to the
Auto Attendant (extension 500). Click Apply to add the group.
4 Repeat these steps to add additional groups, if desired, and then click OK.
Configuring and Managing E1 Digital Line Cards 271