Nortel BCM 3.7, Manual

Page: 172 / 1004

172 Universal T1 WAN (UTWAN)
N0008589 3.3
Assigning lines for data traffic
The number of lines you assign for data traffic determines the bandwidth of your data networking
connection. The following table shows the available bandwidth for data traffic on the UTWAN
according to the number of lines assigned.
To assign a line for data traffic, you must change the line type to Fixed Data Channel and then
assign the line to the data module.
Determining which lines are available to the UTWAN
The lines that are available to the UTWAN are determined by the DIP switch settings on the DTM
you are using for the UTWAN connection. Refer to the table below for a list of lines assigned per
DS30 bus.
Table 19 Bandwidth available per channel
Number of lines Bandwidth (bps) Number of lines Bandwidth (bps)
1 64000 9 576000
2 128000 10 640000
3 192000 11 704000
4 256000 12 768000
5 320000 13 832000
6 384000 14 896000
7 448000 15 960000
8 512000 16 1024000
Note: The maximum number of lines you can assign for data traffic is 16.
Both ends of the WAN link must be using the same number of lines for data traffic and
start with the same time slot.
Table 20 Line numbers for the UTWAN based on the DS30 bus of the DTM
DS30 bus Type of module Default Line numbers
02 Digital Trunk Module (DTM) 211-234
03 Digital Trunk Module (DTM) 181-204
04 Digital Trunk Module (DTM) 151-174
05 Digital Trunk Module (DTM) 121-144
06 Digital Trunk Module (DTM) 91-114
07 Digital Trunk Module (DTM) 61-84