Nortel Networks 1000 User Manual
Page 276
276
NT5D33 and NT5D34 Lineside E1 Interface cards
Table 107
LEI card - LEI backplane and I/O panel pinouts (cont’d.)
Backplane
connector pin
I/O Panel
connector pin
Signal
18A
7
Toward MMI terminal, receive data
18B
32
Daisy chain control 2
19A
8
Daisy chain control 1
19B
33
Ground
Table 108 "LEI card - lineside E1 I/O cable pinouts" (page 276)
shows the
pin assignments from the I/O panel relating to the pin assignments of the
lineside E1 I/O cable.
Table 108
LEI card - lineside E1 I/O cable pinouts
I/O Panel
Connector
Pin
Lead Designations
LEI
Connector
Pin
LEI Cable Connector to
External
Equipment
1
E1 Tip Receive data
11
DB15 male to E1 (P2). LEI is
CPE transmit and receive to
network
26
E1 Ring Receive data
3
2
E1 Tip Transmit data
1
27
E1 Ring Transmit data
9
3
Alarm out, common
1
28
Alarm out (normally open)
2
DB9 male to external alarm (P3)
4
Alarm out (normally closed)
3
7
Toward MMI terminal, receive
data
2
31
Toward MMI terminal, transmit
data
3
33
Ground
5
8
Control 1
7
32
Control 2
9
DB9 male toward MMI (P5).
Wired as DCE.
Data is transmitted on pin 2
(RXD) and received on pin 3
(TXD)
33
Ground
5
8
Control 1
7
32
Control 2
9
30
Away from MMI terminal,
transmit data
3
6
Away from MMI terminal, receive
data
2
DB9 female away from MMI
terminal (P4)
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
02.06
Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.