Configuring X.25 8-19
Closed User Group Parameters
The Closed User Group (CUG) function is an X.25 privacy feature that allows cre-
ation o f up to 100 gro ups of us ers per port. Members o f a CUG c an commu nicate with
other members, but access t o and from network users out side th at CUG may b e denied
(determined by Outgoing Access Allowed and Incoming Access Allowed). The CUG
index number is included in call packets, and is cross-ref eren ced with the CUG Index
in the SmartSw itch software.
Pref erential CUG Flag
specifies whether the port has a preferential CUG if the port belongs to any CUGs.
Pref erential CUG
is a default C UG for the port. Any c alls that do not spe cify a CUG will default to this
one if Preferential CUG Flag is Y. A new port has CUG 0 specified here.
Incoming Access Allowed
determines whether this port will be allowed to receive calls from outside its CUGs.
Outgoing Access Allowed
determines whether this port will be allowed to make calls outside its CUGs.
Add/Change CUG
To configure a CUG, select this entry and, when prompted, enter:
CUG Index, 0-99 (the defaul t is 0), which is a reference to the CUG.
CUG number, 1-16383 (the de f a ul t is 1), that will be associated with the index.
any other requested information. (See Table 8- 1 on page 8-6.)
Display All CUGs
Selecting this item will display a list of all configured CUGs.
Delete CUG
To delete a CUG, sele ct this item and enter the index (s ee "Add/Change CUG") of the
CUG to be d eleted.