Demand test descriptions and error codes - Avaya Support

MAINT (PN Maintenance Circuit Pack)
The CPAD is connected to the PN’s Maintenance circuit pack. The CUST-ALM MO is not
maintained by the system, and will not generate any alarms. If a problem is suspected with the
CPAD, it may be tested using test customer-alarm, which will activate the device by
closing the relay on either the PN’s Maintenance circuit pack (whichever is specified) for 1
minute. The repeat parameter may be used to close the relay for a longer length of time where
the number of the repeat is the number of minutes for which the device will be activated (5
minutes is the suggested repeat value).
Note:
Note: S8700-series servers and S8500 servers equipped with G650 carriers will differ
from this MO, in that the IPSI board provides the CPAD leads. The intent for the
feature is in other ways the same.
The test customer-alarm location command is provided to allow a technician to check
if the customer-provided alarming device is correctly installed and functional. See
Customer-Provided Alarming Device Test (#115) for a description of the test. It is recommended
that this test be run at least once after both the switch and the customer alarm have been
installed.
Connectivity paths
The server communicates with a PN’s Maintenance circuit pack via the following path. (Uplink
messages back from this Maintenance circuit pack to the server take the reverse path.)
Messages flow from the server’s processor to an IPSI connected PN’s TN2312AP IPSI circuit
pack’s Packet Interface circuit, over this PN’s LAN bus to its Expansion Interface circuit pack,
across the fiber link to the active PN’s Expansion Interface circuit pack, and over a serial link to
the PN’s Maintenance circuit pack.
The PN’s Maintenance circuit pack must be physically inserted into the dedicated slot marked
Maintenance in the A carrier of the PN. The serial links from the PN’s Maintenance circuit pack
to the Expansion Interface circuit packs are physically connected from this dedicated slot to
slots 2A01 and 2B02 (2B02 is used only if there is duplicated Port Network Connectivity). The
serial link from slot 2A01 to the maintenance slot is hard-wired into the backplane of carrier A,
whereas the serial link from slot 2B02 to the maintenance slot is a ribbon cable connecting the
two slots. The serial link from the PN’s Maintenance circuit pack to the terminal is also a ribbon
cable which plugs into a connector labeled TERM on the back of carrier A.
The maintenance strategy for the PN’s Maintenance circuit pack consists of checking the
integrity of the communications path to/from the PN’s Maintenance circuit pack, testing
individual hardware components on the PN’s Maintenance circuit pack, and keeping the alarm
LEDs up-to-date. The individual hardware components include the serial interfaces which
handle the serial links connected to the PN’s Maintenance circuit pack. There are three serial
interfaces, one for each possible Expansion Interface circuit pack and one for the terminal.
Issue 5 May 2009 583