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DeE - PIN Assignments and Connections (EIA 232C)
3708
Remote
25 Pin Male
25 Pin Male
Connector
Connector
Signal Name
Pin
Pin
Frame Ground
outer shield
Xmit Data
S
2
2
Receive Data
S
3
3
RTS
4
4
CTS
5
5
DSR
6
6
Signal Ground
7
inner shields
7
DCD
8
8
Transmit Clock
5
15
15
Receive Clock
5
17
17
18
18
DTR
20
20
Ring Indicate
22
22
23
23
DTE Transmit Clock
24
24
•
Outer shield clamped to connector shell.
S Shielded conductor leads. Each lead is individually shielded.
All shields are connected to pin 7.
Notes:
1. PIN positions that are not specified must not be wired.
2. All the wires should be enclosed within a shield, and this shield should be
connected to the connector housing.
3. PIN 13 must not be connected.
4. At the 3708, PINs 2,4, 12, 14, 18,20,21,23, and 24 must not be driven by the
connected equipment (modem, modem eliminator, or host).
5. PINs 18 and 23 are in IBM cables but currently are not used.
D-4
3708 Planning and Installation
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