Nortel Meridian Meridian 1 Maintenance Manual page 247

Check Meridian 1 configuration
If the telephone configuration on the Meridian 1 is not correct, the
Meridian 1 will not send any messages to the Application Module or IPE
Module. For the application to receive a particular type of message, the
feature must be turned on. See the Meridian Link/Customer Controlled
Routing Installation and Upgrade Guide (NTP 553-3202-210) for
information on turning on a particular feature.
Use LD48 to see if the Meridian 1 is sending or receiving expected AML
messages. For example (AML connected to ESDI port 9):
>LD48
.ENL MSGI 9 (trace inbound messages on port 9)
.ENL MSGO 9 (trace outbound messages on port 9)
Note: Using these commands during a high-traffic period may impact
service.
In this example, messages flowing in and out of port 9 will be displayed on
the Meridian 1 console in hexadecimal format. To turn tracing off, do the
following:
.DIS MSGI 9
.DIS MSGO 9
Check ACD configuration
If an application is not receiving messages on behalf of an ACD set (such
as Call Offered, Answer Indication, or Release Indication), the ACD group
is not configured correctly. See the Meridian Link/Customer Controlled
Routing Installation and Upgrade Guide (NTP 553-3202-210) for
configuration details.
Check Unsolicited Status Message configuration
If an application does not receive Status Change messages on behalf of a
monitored device, the Unsolicited Status Messages (USM) feature may not
be configured correctly. See the Meridian Link/Customer Controlled
Routing Installation and Upgrade Guide (NTP 553-3202-210) for
configuration details.
Meridian Link Release 5C/CCR Release 3C Diagnostic and Maintenance Guide
Chapter 4: Diagnosing faults 235