Avaya DEFINITY Server R Manual page 198

Upgrading a Multicarrier G2 Universal Module to Avaya
DEFINITY Server R EPN running Avaya MultiVantage
Software
Alarm Connection
The D6 connector on G2 systems had 31 alarm-monitor appearances (Unit 1 to
Unit 31) for external equipment. The AUXILIARY connector on a PPN only has
appearances for 1M (major alarm) and 1m (minor alarm). If the G2 system being
upgraded used more than 1 major or more than 1 minor alarm-monitor
appearance, these extra appearances, they can either be distributed to the
AUXILIARY connector or "ganged" so that several external devices share the
same appearance. The alarms can also be accommodated by paralleling them to
the above connections.
NOTE:
When several external devices are ganged to the same appearance, each
device loses its individual identity. An alarm on a shared appearance only
denotes that 1 of several devices reported a problem. Subsequent
maintenance effort is needed to determine which device reported the
problem and the nature of the problem.
The control circuit pack behind the AUXILIARY connector detects external
alarms with a ground-detector chip. Therefore, to gang several external
devices, every device must be able to return a true relay ground closure to
the AUXILIARY connector. Alternatives, such as a TTL low driver, are
inadequate.
The following tables correlate wall-field terminal numbers, connector pin numbers,
lead colors, and lead designations for the G2 D6 and AUXILIARY connectors.
5-6
Issue 5 October 2002 555-233-115