X.25 Host Computer Link (Link 1) Will Not Establish - Nortel Meridian Meridian 1 Maintenance Manual

X.25 host computer link (Link 1) will not establish

This section applies to Meridian Link only.
The following section describes the steps to take if the X.25 Host Link
between the host computer and the Application Module or IPE Module
does not establish.
1 Check link status from the Meridian Link.
¥ Log in as mlusr. If unable to log in, see ÒLogin failure.Ó
¥ Check the status of the link.
mlusr> status link 1
If the response is ÒLink 1 : UpÓ, the Host Link is properly connected
and the problem is not the Host Link connectivity. Make sure the host
application has properly registered (see ÒApplication registration
failsÓ).
If the response is ÒLink 1 : DisabledÓ, enable the link.
mlusr> enable link 1
If the response is ÒLink 1 : Enabled but downÓ, the Host Link is
properly enabled, but there is something wrong on the host side: either
link 1 parameters do not match the host, or the host is down.
If the response is anything other than what is indicated above, or there
is no response at all, restart the application.
2 Check the Host Link cable.
Use a straight-through RS-232 cable between the host computer and
¥ the Host Link port on the IPE Module octopus cable
¥ card 1 conn 2 on the generic I/O panel, Host on the universal I/O
panel, or J3 on the I/O subpanel of the Application Module
Pins 2Ð8, 15, 17, and 20 are used.
Meridian Link Release 5C/CCR Release 3C Diagnostic and Maintenance Guide
Chapter 4: Diagnosing faults 217