Connect The Power Supply Using A Ups (Optional); Figure 45 Connecting The Bcm50 Expansion Unit To The Bcm50 Main Unit; Table 19 Default Line And Extension Numbers - Nortel BCM50 Installation And Maintenance Manual

2 Plug one end of the expansion cable into the expansion port on the BCM50 Expansion Unit.
3 Plug the other end of the expansion cable into one of the expansion ports on the BCM50 Main
Unit (see Figure

Figure 45 Connecting the BCM50 Expansion Unit to the BCM50 Main Unit

BCM50 Expansion Unit
The expansion port you select determines the line and extension numbers of the devices
connected to the BCM50 Expansion Unit. Refer to
numbers.
4
If you have a second BCM50 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 media bay module (MBM) you install in the BCM50 Expansion Unit.

Connect the power supply using a UPS (optional)

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.
Figure 46 on page 118

Connect the power supply using a UPS (optional)

45).
BCM50 Main Unit
Default
extension numbers*
Digital: 221 – 232
Analog: 213 – 216
217 – 248
249 – 280
69.
shows an overview of how to connect the UPS.
Table 19 for the default line and extension
Default
line numbers*
071 – 074
095 – 130
201 – 230
Connect the cables to the BCM50 system
BCM50 Expansion Unit
117