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236 CHAPTER 3: DEVICE CONFIGURATION
Changing E1 Group Membership
You may want to change the channel membership in an E1 group to
accommodate changing needs.
To change group membership:
1 On the Digital Line Cards tab, select ISDN PRI Group List from the Select
Device Type drop-down list and click Apply.
2 Select the group for which you want to change membership.
3 Click Membership.
4 To add a channel to the Member List, select the channel in the Non
Member List and click <<. If you select the Copy Group Settings to
Channels check box, the system copies the settings of the selected group
to each channel that you add or remove. If you do not select this check
box, the channel settings are not changed.
5 Optionally, enable the Refresh Channels on Add/Remove check box. This
refreshes each channel as you add or remove it.
6 To remove a channel from the Member List, select the channel in the
Member List and click >>.
Each channel must belong to a group. A channel can belong to only one
group at a time. You cannot move a channel from the members list to the
non-members list of a group unless the system can assign the channel to
another group. If a channel has never been a member of another group,
the system cannot determine a group to which it can move the channel,
so it cannot remove the channel from the member list. If a channel has
been a member of another group in the past, the system moves the
channel to the group of which the channel was most recently a member.
Example: By default, the system creates two groups, Group 1 and
Group 2, and places all channels in Group 1. If you try to move a channel
to the non-member list of Group 1, the operation fails. If you select
Group 2, click Membership, move a channel from the non-member list to
the member list, and then move the same channel back to the
non-member list, the operation succeeds because the channel was
previously a member of Group 1. If you then view the Group 1
membership list, it contains the channel you just removed from Group 2.
7 Click Close.