Nortel NT1R20 Description page 188

Page 164 of 290
553-3001-105 Standard 5.00 June 1999
NT5D33 and NTRB34 Line-side E1 Interface Cards
Table 43
Card unit number to E1 channel mapping (Part 2 of 2)
TN
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Daughterboard
Disconnect supervision
The LEI supports distant-end disconnect supervision by opening the tip side
toward the terminal equipment upon the Meridian 1 system's detecting a
disconnect signal from the distant-end on an established call. The X11
software release 21 Supervised Analog Line feature (SAL) must be
configured in overlay 10 for each LEI port. At the prompt FTR respond OSP
<CR>, and against FTR respond ISP <CR>. The LEI treats OSP and ISP for
both originating and terminating calls as hook flash disconnect supervision,
also known as cut-off disconnect. Originating calls are outgoing from the
terminal equipment. Terminating calls are incoming to the terminal
equipment. The LEI does not support battery reversal answer and disconnect
supervision on originating calls.
E1 Channel Number
0
1
2
3
4
5
6
7
8
9
10
11
12
13
18
19
20
21
22
23
24
25
26
27
28
29
30
31