Nortel Meridian Meridian 1 Maintenance Manual page 230

218 Chapter 4: Diagnosing faults
553-3211-510 Standard 1.0 October 1998
Verify that the length of the cable between the host and the
Application Module does not exceed the RS-232 recommended length
of 15 m (50 ft). Use external modems if the distance between the
Meridian Link Module and the host computer is farther than the
maximum recommended cable length. Nortel neither supplies nor
recommends a particular make or model for this purpose. If problems
exist with the external modems, Nortel recommends that the customer
call service representatives for the modem equipment. (A common
symptom for an excessive cable length is that the link will establish for
only a short period of time.) See the Meridian Link/Customer
Controlled Routing Installation and Upgrade Guide (NTP 553-3202-
210) for more information on using modems with the Application
Module.
3 Verify that the Application Module MVME333-2 XCC card is
functional.
If the red LED is lit, see ÒDiagnostic procedure 3: Card fault
suspectedÓ to verify that the MVME333-2 XCC card is indeed bad.
4 Check the X.25 communications software.
¥ Log in as maint, type
¥ A list of installed software packages appears. Check that the list
contains an entry that reads ÒMeridianLink & X25 NET333.Ó If it
does not appear, reload the Meridian Link software.
and press [Return].
version,