Avaya M770 - Manual (Page 24)

Chapter 3 Avaya M770 Hub Components
14 Avaya M770 User’s Guide
M-SPV/M-SPX Front Panel Port
The RJ-45 Console port on the M-SPV/M-SPX is used for terminal setup.
The M-PS Power Supply Unit
At least one M-PS Power Supply unit is necessary for the operation of the
Avaya M770 but up to three M-PSs can be installed in the hub.
For more detailed information about the Power Supply please refer to the M-PS
Installation Guide.
M-PS Indicator
In addition to the PS status LEDs on the control panel of the Avaya M770 hub, each
M-PS has a LED indicator on its rear panel for viewing its status at a glance during
insertion and replacement of M-PSs.
Table 3.5 M-PS Status LED
Power Budget Considerations
The recommended Avaya M770 configuration is two M-PS units, plus a third unit
for redundancy. Such a configuration supports any number of DomainX and Avaya
M440 modules in the hub.
If there is only one M-PS unit available, the maximum number of modules in the
hub is based on the following guidelines
1
:
• 5 or less DomainX modules, or
• 4 or less DomainX modules with 2 or less Avaya M440 modules,
• 3 or less DomainX modules with 5 or less Avaya M440 modules.
Two M-PS power supplies support any combination of Avaya M440 and DomainX
modules. For redundancy it is recommended to install the third M-PS as well.
LED Name Represents State Function
STATUS Power Status
Green Module is functioning normally
Amber Module is faulty
1The guidelines take into consideration a maximum power consumption of
60W@48V for each DomainX module and 20W@5V for each Avaya M440 module.
The sub-systems’ power consumption (M-SPV/M-SPX, redundant M-SPV/M-SPX,
fans, backplanes) was also already taken into consideration.