3Com 3C63311 Reference Guide - Page 57
Signal Name, Pin # on 60-pin, Connector, Pin # on DB-37, Direction for, Serial Port
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Installation Procedures 45 Table 13 Connector Pinouts for RS-449 DTE Cable (60-pin connector) to DB-37 Male Signal Name Frame GND Circuit GND RTS CTS DSR DCD (not used, see DCE cable) DTR LL (not used) SD+ SDRD+ RDSCTE+ SCTESCR+ SCRSCT+ SCTShorting GR 1 Shorting GR 2 Pin # on 60-pin Connector 46 15, 16, 45 9, 10 1, 2 3, 4 5, 6 Pin # on DB-37 Connector 1 19, 20, 37 7, 25 9, 27 11, 29 13, 31 Direction (for Serial Port) Out In In In 7, 8 12, 30 Out 44 10 Out 11 4 Out 12 22 Out 28 6 In 27 24 In 13 17 Out 14 35 Out 26 8 In 25 26 In 24 5 In 23 23 In 48, 49 51, 52,
Installation Procedures
45
Table 13
Connector Pinouts for RS-449 DTE Cable (60-pin connector) to DB-37 Male
Signal Name
Pin # on 60-pin
Connector
Pin # on DB-37
Connector
Direction (for
Serial Port)
Frame GND
46
1
Circuit GND
15, 16, 45
19, 20, 37
RTS
9, 10
7, 25
Out
CTS
1, 2
9, 27
In
DSR
3, 4
11, 29
In
DCD (not used, see
DCE cable)
5, 6
13, 31
In
DTR
7, 8
12, 30
Out
LL (not used)
44
10
Out
SD+
11
4
Out
SD-
12
22
Out
RD+
28
6
In
RD-
27
24
In
SCTE+
13
17
Out
SCTE-
14
35
Out
SCR+
26
8
In
SCR-
25
26
In
SCT+
24
5
In
SCT-
23
23
In
Shorting GR 1
48, 49
Shorting GR 2
51, 52,