Nortel Meridian Companion Installation And Maintenance Manual page 18

19 Preparing for the installation
COMPANION 200 Installation and Maintenance Guide
To determine the number of Line Cartridges, Line Modules, and
Base Station Modules needed for a given configuration of access
lines and TCM lines as well as the type of Expansion Cartridge
required to support these modules:
1. Find the number of access lines in the top row. Each user and
each RAD modem needs one access line. This tells you how
many Line Modules (LM) you need.
2. To find out how many Line Cartridges you need, divide your
number of access lines by 4, and round up.
Note: The Controller can accommodate up to two Line
Cartridges, and each Line Module can accommodate up
to three Line Cartridges.
3. Find the number of TCM devices in the left column. Each Base
Station, Administration Terminal, and RAD needs one TCM
line. This tells you how many Base Station Modules (BM) you
need.
4. Read down the access lines column until you cross the TCM
devices row. The number in that box indicates the number of
external ports needed for that configuration (a gray cell indicates
an invalid combination of access and TCM lines). This tells you
how many Expansion Cartridges you need. You can use any
combination of 2-port and 6-port Expansion Cartridges.
Note: Consider future expansion needs when choosing the
Expansion Cartridges.
P0725810 Issue 3.0