Chapter 3 Avaya M770 Hub Components
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 | | |
| | | | |
LED Name | | Represents | State | Function |
| | | | |
| | | | |
STATUS | | Power Status | Green | Module is functioning normally |
| | |
| Amber | Module is faulty |
| | |
| | | | |
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 guidelines1:
•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.
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.
14 | Avaya M770 User’s Guide |
