Power Supply Fuse; Mounting Two To Five G650 Media Gateways - Avaya G650 Installing

Power supply fuse

The fuse protects the DC input from reverse voltage on the -48 VDC input. If reverse voltage is applied to
the G650 Media Gateway and the 655A power supply, the 655A fuse will blow open protecting the 655A
power supply from damage. The fuse is located on each end of the rear surface of the 655A power supply
as shown in Figure 8, 655A power supply fuse and ringer switch,
fuse and a spare are located in the two fuse positions.
If the G650 Media Gateway will not operate on DC input (only), the fuse should be inspected by
removing the 655A power supply from the G650 Media Gateway and inspecting the protection fuse.
A spare fuse (Comcode 700290158) is shipped with the power supply.

Mounting two to five G650 Media Gateways

When mounting more than one G650 Media Gateway in a rack, put:
1
A in the bottom of the rack
2
B directly above A
3
C directly above B
4
D directly above C
5
E directly above D
EMI gaskets provide Electro Magnetic Interference (EMI) to or from the TDM cable with the outside
environment. You must install the EMI gaskets before putting cabinets B, C, D, or E in the rack.
To install the EMI gaskets:
1
Peel the paper backing from the gasket
2
Locate the unpainted outlined area on top of the G650 Media Gateway
3
With the gasket opening facing the rear of the rack, place the gasket on the:
a
b
After you put the last G650 in the rack:
1
Cable the rack (see
2
Install the TN2312BP IPSI adapter (proceed to
42).
Installing the Avaya G650 Media Gateway
June 2004
NOTE:
In a multiple G650 Media Gateway configuration, put the G650s in the rack with no
vertical space between them. If the G650 Media Gateways are not mounted adjacent with
their fronts in the same vertical plane, the TDM/LAN cable(s) cannot connect them.
Right top for G650 A and C
Left top for G650 B and D
Cabling the G650 Media Gateways
on page 40. The DC input protection
on page 51).
Installing the TN2312BP IPSI adapter on page
41