284 NT5D33 and NT5D34 Lineside E1 Interface cards
Table122
LEI card - lineside E1 I/O cable pinouts
I/O Panel
Connector
Pin Lead Designations
LEI
Connector
Pin
LEI Cable Connector to
External
Equipment
1E1 Tip Receive data 11 DB15male to E1 (P2). LEIis CPE
transmit and receive to network
26 E1 Ring Receive data 3
2E1 Tip Transmit data 1
27 E1 Ring Transmit data 9
3Alarm out, common 1
28 Alarm out (normally open) 2DB9 male to external alarm (P3)
4Alarm out (normally closed) 3
7Toward MMI terminal, receive
data 2
31 Toward MMI terminal, transmit
data 3
33 Ground 5
8Control 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
8Control 1 7
32 Control 2 9
30 Away from MMI terminal, transmit
data 3
6Away from MMI terminal, receive
data 2
DB9 female away from MMI
terminal (P4)
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 Table122 "LEI card -

lineside E1 I/O cable pinouts" (page 284).

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, thetransmit and receive pairs must be wired straight through to the

RJ48 at the Telcodemarc, the LTU, or other E1 carrier equipment. The E1

CPE at the far-end has transmit and receivewired straight from the RJ48

demarc at the far-end of the carrier facility.

Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.