Nortel Networks 1000 - Manual (Page 275)

Installation 275
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
In a coaxial E1 installation, make the connection from the I/O panel to the
E1 link and other external devices through the NT5D36AA lineside E1 I/O
cable.
This cable consists of a 25-pair amphenol connector (P1) on one end
which plugs into the I/O panel. The other end has 4 connectors:
1. a DB15 female connector (P2) with an adapter that breaks out Tx
(transmit) and Rx (receive) connectors, which that plug into the E1 line
2. a DB9 male connector (P3), which plugs into an external alarm system
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 107 "LEI card - LEI backplane and I/O panel pinouts" (page
275)
shows the pin assignments of the LEI backplane and I/O Panel.
Table 107
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
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.