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MSS high-availability configuration (back view)

The back view of the MSS-H varies, depending on the type of motherboard and redundant power supply that is installed. Note the configuration that your MSS-H uses:


Note: An MSS-H with an integrated video and LAN always uses side-by-side redundant power supplies. An MSS-H with a nonintegrated video and LAN usually uses vertically stacked redundant power supplies, although it might use the side-by-side model.

MSS-H with vertically stacked power supplies and a nonintegrated video and LAN

1	Reset switch for faulty power supply alarm
2	Power supply on/off switch
3	Redundant power supply (vertically stacked model)
4	AC power receptacle
5	Mouse connector
6	Keyboard connector
7	USB ports
8	Serial port (COM1)
9	Parallel port (not used)
10	Serial port (COM2), used for the Remote Maintenance Board (RMB)
11	Corporate LAN interface
12	Audio connectors (not used)
13	Video card (contains monitor connector)
14	Network interface card (used for the private LAN to the Avaya MASs)
15	SCSI RAID controller card
16	Remote Maintenance Board (Connects to analog line for alarm reporting and servicing. International versions require an external modem.)
17	Latch for top cover

MSS-H with side-by-side power supplies and an integrated video and LAN

1	Redundant power supply (side-by-side model)
2	AC power receptacle
3	Power supply on/off switch
4	Reset switch for faulty power supply alarm
5	USB ports
6	Mouse connector
7	Keyboard connector
8	Serial port (COM1)
9	Video connector
10	Corporate LAN interface
11	Private LAN interface
12	Serial port (COM2), used for the Remote Maintenance Board (RMB)
13	Remote Maintenance Board (Connects to analog line for alarm reporting and servicing. International versions require an external modem.)
14	SCSI RAID controller card
15	Latch for top cover

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