Nortel Networks Circuit Card User Manual
Page 276
Page 276 of 906
NT5D33 and NT5D34 Lineside E1 Interface cards
553-3001-211 Standard 3.00 August 2005
Table 103 shows the pin assignments from the I/O panel relating to the pin
assignments of the lineside E1 I/O cable.
17A
6
Away from MMI terminal, transmit
data
17B
31
Toward MMI terminal, transmit
data
18A
7
Toward MMI terminal, receive
data
18B
32
Daisy chain control 2
19A
8
Daisy chain control 1
19B
33
Ground
Table 103
LEI card – lineside E1 I/O cable pinouts (Part 1 of 2)
I/O Panel
Connector
Pin
Lead Designations
LEI
Connect
or 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)
Table 102
LEI card – LEI backplane and I/O panel pinouts (Part 2 of 2)
Backplane
connector pin
I/O Panel
connector pin
Signal