Nortel Networks 311 User Manual
Backplane pinout and signaling
489
I/O cable
RS-232-C
Pair
Pin
Pair
color
Unit no.
Signal
Pin no.
RS-422
Signal
Patch pair
or
octopus
12T
37
BK-O
RI2
22
12R
12
O-BK
CTS2
5
Note 1: The RS-232 pinout follows the standard set by the QPC723 RILC.
Note 2: The RS-422 pinout follows the standard set by the QPC430 AILC (first pair: Receive Data;
second pair: Send Data). Receive and Send are designated with reference to the DTE; therefore,
they must be turned over in the cross-connect since most DTE have first pair as Send Data and
second pair as Receive Data.
second pair: Send Data). Receive and Send are designated with reference to the DTE; therefore,
they must be turned over in the cross-connect since most DTE have first pair as Send Data and
second pair as Receive Data.
Table 193
RS-232-C and RS-422 pinouts for last three DAC ports
RS-232-C and RS-422 pinouts for last three DAC ports
I/O cable
RS-232-C
Pair
Pin
Pair
color
Unit no.
Signal
Pin no.
RS-422
Signal
Patch pair or
octopus
13T
38
BK-G
UNIT 3
TD3
2
RDA3
13R
13
G-BK
RD3
3
RDB3
14T
39
BK-BR
DTR3
20
SDA3
14R
14
BR-BK
GND3
7
SDB3
Connector
15T
40
BK-S
DCD3
8
1
15R
15
S-BK
DSR3
6
16T
41
Y-BL
RI3
22
16R
16
BL-Y
CTS3
5
17T
42
Y-O
UNIT 4
TD4
2
RDA4
17R
17
O-Y
(Note)
RD4
3
RDB4
18T
43
Y-G
DTR4
20
SDA4
18R
18
G-Y
GND4
7
SDB4
Connector
19T
44
Y-BR
DCD4
8
2
19R
19
BR-Y
DSR4
6
20T
45
Y-S
RI4
22
20R
20
S-Y
CTS4
5
21T
46
V-BL
UNIT 5
TD5
2
RDA5
21R
21
BL-V
(Note)
RD5
3
RDB5
Note: Units 4 and 5 are available when the DAC is installed in a fully wired 24-pair slot.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.