Avaya 03-300430 User Manual

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:

S8700 and S8500 media 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 

that the customer-provided alarming device is correctly installed and functional (See 

on page 1506). It is recommended that this 

test be run at least once after both the switch and the customer alarm have been installed.

The media server communicates with a PN’s Maintenance circuit pack via the following path. 
(Up-link messages back from this Maintenance circuit pack to the media server take the reverse 
path.) Messages flow from the media 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.
Since the PN’s Maintenance circuit pack supports environmental maintenance in the PN, 
trouble with the PN’s Maintenance circuit pack can cause environmental maintenance to falsely 
detect problems. In a multicarrier cabinet PN, these environmental MOs include: POWER 
(Battery and Battery Charger), CARR-POW (Carrier Port Power Unit), AC-POWER (AC Power), 
CABINET (Cabinet Sensors), EMG-XFER (Emergency Transfer), EXT-DEV (External Device 
Alarm), and CUST-ALM (Customer-Provided Alarming Device). In a single carrier cabinet PN, 
these environmental MOs include DC-POWER (Single Carrier Cabinet Power), EMG-XFER 
(Emergency Transfer), EXT-DEV (External Device Alarm), and CUST-ALM (Customer-Provided 
Alarming Device).