Bri Switch Settings; Ctm Switch Settings - Nortel BCM200 Installation And Maintenance Manual

124 Chapter 8 Installing a media bay module (MBM)

BRI switch settings

You can install a maximum of three BRIM MBMs per DS30 bus on the offsets indicated in
Table 35.
Table 35 BRIM S/T switch settings
Enter these switch
Select
Select
DS30
offset
bus
1 2
on on on on on on
2 0
on on
1
on off
2
on on on on on
3 0
on on
1
off
on
2
on on on on
4 0
on on
1
off
on
2
***If your system is configured with a 3/5 DS30 split, DS30 bus 7 is not available.

CTM switch settings

There are two models of CTMs.
CTM4: The CTM4 provides connections for four analog calling line identification (CLID) PSTN
lines. Each voice line uses one line in the offset. Because each DS30 bus has four lines per offset,
you can assign a maximum of four CTMs to a single DS30 bus by making the offset switch
settings different for each MBM. You can also combine three CTMs with the trunk part of the
4x16 on the same DS30 bus.
CTM8: The CTM8 provides connections for eight analog calling line identification (CLID) PSTN
lines. Each line uses one voice line. Because each DS30 bus has four lines per offset, you require
two offsets. You can assign a maximum of two CTM8s to a DS30 bus by making the offset switch
settings different for each MBM. You can also combine a CTM8 with a 4x16 on the same DS30
number. When you choose an offset number for the CTM8, the system automatically adds the next
offset number. You cannot assign offset 3 to the CTM8 because this does not allow the MBM to
assign the second set of lines.
You can also mix the two MBMs. For instance, if you have two existing CTM MBMs with offset
0 and 1, you can add a CTM8 on offset 2.
N0060612 N0060612
To
settings assign
these
3 4 5 6
lines
211-218
off
on on on 219-226
on on on on 227-234
off
181-188
off on on off
189-196
off
on on on
197-204
off on 151-158
off on off on 159-166
off
on on on 167-174
Enter these switch
Select
Select
DS30
offset
bus
1 2
on on
5 0
on on
1
on off
2
on on
6 0
on on
1
off
on
2
on on
***7 0
on on
1
off
on
2
To assign
settings
these
lines
3 4 5 6
on on off off
121-128
off off off
on
129-136
on on off off
137-144
on off on on
91-98
off off on on
99-106
off
on on on
107-114
on off on off
61-68
off off on off
69-76
off off
on on
77-84