Nortel Networks Circuit Card 311 - Manual (Page 283)

Installation 283
3. a second DB9 male connector (P5), which connects to an MMI terminal
or modem
4. a DB9 female connector (P4), which connects to the next LEI’s P4
connector for MMI daisy chaining. The Tx marking on the adapter at P2
is the LEI output. The E1 data stream coming from the network into the
LEI connects at the Rx coaxial connector
Table 121 "LEI card - LEI backplane and I/O panel pinouts" (page
283)
shows the pin assignments of the LEI backplane and I/O Panel.
Table 121
LEI card - LEI backplane and I/O panel pinouts
Backplane
connector pin I/O Panel
connector pin
Signal
12A 1 E1 Tip, Receive data
12B 26 E1 Ring, Receive data
13A 2 E1 Tip, Transmit data
13B 27 E1 Ring, Transmit data
14A 3 Alarm out, normally open
14B 28 Alarm out, common
15A 4 Alarm out, normally closed
15B 29 No connection
16A 5 No connection
16B 30 Away from MMI terminal, receive data
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 122 "LEI card - lineside E1 I/O cable pinouts" (page 284) shows the
pin assignments from the I/O panel relating to the pin assignments of the
lineside E1 I/O cable.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.