Nortel Networks Circuit Card 311 - Manual (Page 207)

Installation and configuration 207
—End—
The backplane connector is arranged as an 80-row by 2-column array of
pins.
Table 97 "Lineside T1 card - backplane pinouts" (page 207) shows the
I/O pin designations for the backplane connector and the 25-pair Amphenol
connector from the I/O panel. Although the connections from the I/O panel
only use 14 of the available 50-pins, the remaining pins are reserved and
cannot be used for other signaling transmissions.
The information in Table 97 "Lineside T1 card - backplane pinouts" (page
207) is provided as a reference and diagnostic aid at the backplane, since
the cabling arrangement can vary at the I/O panel. See Communication
Server 1000M and Meridian 1 Large System Installation and Configuration
(NN43021-310) for cable pinout information for the I/O panel.
Table 97
Lineside T1 card - backplane pinouts
Backplane
Connector Pin
I/O Panel
Connector Pin Signal
12A 1 T1 Tip, Receive Data
12B 26 T1 Ring, Receive Data
13A 2 T1 Tip, Transmit Data
13B 27 T1 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 Towards MMI terminal, Transmit Data
18A 7 Towards MMI terminal, Receive Data
18B 32 Daisy-chain Control 2
19A 8 Daisy-chain Control 1
19B 33 Ground
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.