Emulex DCP_link - Manual (Page 116)

X.25 Configuration 7-23
10) In the Inbound Authentication Update field, accept the default value,
Enabled, or press to select Disabled.
11) Press ; if prompted, select Yes to save your changes, then press
.
The WAN Call Destination you just configured appears in the list of
configured WAN Call Destinations.
To configure another WAN Call Destination, repeat the above steps.
Press until you return to the Internetworking Configuration menu to
configure Network Protocols and Bindings.