Nortel Communication Server 1000M, Installation And Configuration Manual

Page: 33 / 122

Installing ISDN BRI hardware Page 33 of 120
ISDN Basic Rate Interface Installation and Configuration
Cross-connecting the MDF
The MDF cross-connects NE-A25B cables connected to SILC and UILC
ports with building wiring connected to ISDN BRI terminals.
Each SILC provides eight four-wire full-duplex ports. These ports are
connected to building wiring to form DSLs. These ports are
polarity-sensitive. Signal polarity must be maintained along each loop.
Each UILC provides eight two-wire full-duplex ports. These ports are
connected to twisted pair building wiring to form DSLs. These DSLs are not
polarity-sensitive and, although recommended, it is not necessary to maintain
signal polarity along each loop.
K TR
0
TR
1
TR
2
TR
3
TR
4
TR
5
TR
6
TR
7
K
L TR
0
TR
1
TR
2
TR
3
TR
4
TR
5
TR
6
TR
7
L
M TR
0
TR
1
TR
2
TR
3
TR
4
TR
5
TR
6
TR
7
M
N TR
0
TR
1
TR
2
TR
3
TR
4
TR
5
TR
6
TR
7
N
R TR
0
TR
1
TR
2
TR
3
TR
4
TR
5
TR
6
TR
7
R
S TR
0
TR
1
TR
2
TR
3
TR
4
TR
5
TR
6
TR
7
S
T TR
0
TR
1
TR
2
TR
3
TR
4
TR
5
TR
6
TR
7
T
U TR
0
TR
1
TR
2
TR
3
TR
4
TR
5
TR
6
TR
7
U
Note: The cable pair designated TR is a 2B1Q full-duplex U interface.
Table 4
UILC port designation labels at the MDF: NT8D37 IPE module (16-cable configuration)
(Part 2 of 2)
8
9
10
11
12
13
14
15