ACC Utilities Reference Guide

Chapter 12 233
PMON - ACC E1/T1 Line Monitor
Receiving E1/T1 Line Status with a Customer Application
Receiving E1/T1 Line Status with a Customer
Application
By setting itself up as an additional receiver, an application can “tap”
into the status messages being delivered to PMON from the ACC cards.
This entails scanning through all the device ZLUs, t o search for the
monitoring devices. These are easily identified by the application
number of 45 in the logical terminal table ( ltapno field). The checksum
for the ZLU is also avaliable in the ltzcs field.
To receive messages from these devices the zset_rcvr() function must be
used with the ZcADD_SH ARED action, to add the primary ZLU of the
user’s application to the list of receivers for each PMON monitor device.
NOTE Make sure you remove the primary ZLU from the list of shared
recources. Use the zset_rcvr() function with the ZcDELETE_SHARED
action.