NT5D33 and NT5D34 Lineside E1 Interface cards Page 277 of 906
Circuit Card Description and Installation
E1 Connections For twisted-pair installations, E1 signaling for all 30 channels is transmitted over P2 connector pins 1, 3, 9, and 11, as shown in Table 103 on page 276.Plug the DB 15 male connector labeled “P2” into the E1 link. E1 transmit and receive pairs must be turned over between the LEI and the CPE that is hardwired without carrier facilities. If the LEI is connected through E1 carrier facilities, the transmit and receive pairs must be wired straight through to the RJ48 at the Telco demarc, the LTU, or other E1 carrier equipment. The E1
4Alarm out (normally
closed)
3
7Toward MMI terminal,
receive data
2
DB9 male toward MMI (P5).
Wired as DCE.
Data is transmitted on pin 2 (RXD)
and received on pin 3 (TXD)
31 Toward MMI terminal,
transmit data
3
33 Ground 5
8Control 1 7
32 Control 2 9
33 Ground 5
DB9 female away from MMI terminal
(P4)
8Control 1 7
32 Control 2 9
30 Away from MMI terminal,
transmit data
3
6Away from MMI terminal,
receive data
2
Table 103
LEI card – lineside E1 I/O cable pinouts (Part2 of 2)
I/O Panel
Connector
Pin Lead Designations
LEI
Connect
or Pin
LEI Cable Connector to External
Equipment