Nortel Networks 400 4.0 User Manual
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Chapter 8 Installing a media bay module (MBM)
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shows the switch settings for each DS30 bus, and the resulting line assignments.
DDIM switch settings
The DDIM combines a DTM and a data module. The switch setting you choose determines the
DS30 bus assigned to the DTM portion of the DDIM. The data module is automatically assigned
the next DS30 bus number.
DS30 bus assigned to the DTM portion of the DDIM. The data module is automatically assigned
the next DS30 bus number.
The DS30 bus you assign to the DDIM determines the line numbers of the T1 line connected to the
DDIM.
DDIM.
shows the switch settings for each DS30 bus, and the resulting line assignments.
Table 32 DTM switch settings (E1 and UK PRI)
Select
DS30
bus
Enter these switch settings
To
assign
these
lines
Select
DS30
bus
Enter these switch settings
To
assign
these
lines
1
2
3
4
5
6
1
2
3
4
5
6
2
on
on
on
on
on
on
211-240
5
on
on
on
on
off off
121-150
3
on
on
on
on
on
off
181-210
6
on
on
on
off
on
on
91-120
4
on
on
on
on
off
on
151-180
***7
on
on
on
off
on
off
61-90
***If your system is configured with a 3/5 DS30 split, DS30 bus 7 is not available.
Table 33 DDIM switch settings
Select
DS30
bus
Enter these switch
settings
To
assign
these
lines
Data
module
DS30
bus
Select
DS30
bus
Enter these switch
settings
To
assign
these
lines
Data
module
DS30
bus
1
2
3
4
5
6
1
2
3
4
5
6
2
on on on on on on
211-234
3
5
on on on on off off
121-144
6
3
on on on on on off
181-204
4
6
on on on off on on
91-114
7*
4
on on on on off on
151-174
5
7
**
* If your system is configured with a 3/5 DS30 split, you cannot use DS30 bus 6 for the DDIM. When you use a 3/5
split, DS30 bus 7 is not available for the data module portion of the DDIM.
split, DS30 bus 7 is not available for the data module portion of the DDIM.
** You cannot use DS30 bus 7 for the DDIM. If you assign DS30 bus 7, there is no DS30 bus available for the data
module portion of the DDIM.
module portion of the DDIM.