3Com SuperStack 3 NBX Administrator's Manual page 245

4 Select Restricted from the Trunk to Trunk pull-down list.
CAUTION: If you select Unrestricted, users can transfer incoming calls to
outgoing trunks. 3Com does not recommend this setting because it
enables the possibility of toll fraud.
5 Click the On Line check box.
6 Enter 500 in each of the four AutoExt text boxes.
7 Click OK.
Verifying BRI Group Membership
To verify that all channels are in the member list:
1 On the Digital Line Cards tab, from the Select Device Type list, select BRI
Group List and then click Apply.
2 Select the group you want, and click Membership (Figure 83).
Figure 83 Manage Group Membership Dialog Box
3 Scroll through the Member List to verify that all eight channels are
present.
4 To transfer a channel from the non-member list to the member list, select
the channel and click <<.
You cannot transfer a channel from the Member List to the Non-Member
list.
Configuring and Managing BRI-ST Digital Line Cards 245