Connecting The Power Supply - Nortel BCM50 Installation And Maintenance Manual

100 Chapter 9 Connecting the cables to the BCM50 system
The expansion port you select determines the line and extension numbers of the devices
connected to the expansion unit. Refer to
numbers.If you have a second expansion unit, repeat steps 1 to 3 for the second unit.
Table 19 Default line and extension numbers
Main unit
Expansion port 1
Expansion port 2
* The number and type of lines and extensions that are available on the
expansion ports is determined by the MBM you install in the expansion
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 power interruption or failure conditions. For more information about the UPS, refer to
"Uninterruptable power supply" on page
When connecting a UPS, you must use a USB hub between the UPS and the BCM50 system.
Note: For the UPS to function correctly, it must be connected before the BCM50
system is powered up. If you connect a UPS to a running system, the UPS will not
function.
Note: International (non-North American) users might require the power supply
adapter cord to connect the power supply to the special power bar. Refer to the
Appendix,
Figure 44 on page 101
N0027152 01 N0027152 01
Default
extension numbers*
Digital: 221 – 232
Analog: 233 – 236
237 – 268
269 –300
50.
"System region attributes" on page 229
shows how to connect the UPS.
Table 19 for the default line and extension
Default
line numbers*
061 – 064
065 – 094
095 – 124
for more information.