Nortel Meridian 1 Manual page 21

Table 10
NT5K19BA E&M 4-Wire Type 1 and Type 2 connections
Lead designations
RA
RB
TA
TB
E
M
RA
RB
TA
TB
E
M
RA
RB
TA
TB
E
M
RA
RB
TA
TB
E
M
Note: The cable pair designated TA, TB is the transmit pair. The pair designated RA, RB is the receive
pair.
Intelligent peripheral equipment circuit cards for New Zealand
Pins
26
1
27
2
28
3
30
5
31
6
32
7
34
9
35
10
36
11
38
13
39
14
40
15
Self-test
When the NT5K19BA E&M Tie trunk card is installed and power is applied
to it, a self-test is performed on the card. The red LED on the NT5K19BA
faceplate flashes three times, then remains continuously lit until the card is
enabled in software. If the self-test fails, the LED will remain lit after the card
is enabled.
E&M tie trunk circuit card
Pair color
W-BL
BL-W
W-O
O-W
W-G
G-W
W-S
S-W
R-BL
BL-R
R-O
O-R
R-BR
BR-R
R-S
S-R
BK-BL
BL-BK
BK-G
G-BK
BK-BR
BR-BK
BK-S
S-BK
Option 11 - Description and Instal-
Page 17 of 44
Unit number
Unit 0
Unit 1
Unit 2
Unit 3