Connecting the power supply – Nortel Networks BCM50 User Manual
Page 102
102
Chapter 9 Connecting the cables to the BCM50 system
NN40020-302
The expansion port you select determines the line and extension numbers of the devices
connected to the expansion unit. For the default line and extension numbers, see the table
Default line and extension numbers
on page 102. If you have a second expansion unit, repeat
steps 1 to 3 for the second unit.
Connecting the power supply
An uninterruptible power supply (UPS) is an optional device that you connect to your BCM50
system. The UPS provides battery backup for the BCM50 system to maintain continuous operation
during a power interruption or failure. For more information about the UPS, see
When connecting a UPS, you must use a USB hub between the UPS and the BCM50 system.
on page 103 shows how to connect the UPS.
Table 20 Default line and extension numbers
Default
extension numbers*
Default
line numbers*
Main unit
Digital: 221–232
Analog: 233–236
061–064
Expansion port 1
237–268
065–094
Expansion port 2
269–300
095–124
* The number and type of lines and extensions that are available on the
expansion ports are determined by the MBM you install in the expansion unit.
Note: For the UPS to function correctly, you must first connect it before you
power up the BCM50 system. If you connect a UPS to a running system, the UPS
does not function.
Note: International (non-North American) users require the power supply adapter
cord to connect the power supply to the special power bar. For more information,
see