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Com port to modem cable, D-11 – Paradyne 3166 CSU User Manual

Page 137

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Pin Assignments

D-11

3166-A2-GB20-10

November 1998

COM Port to Modem Cable

Use a serial crossover cable when connecting the COM port to a modem or other
external device. The following shows the pin assignments from the COM port to
the external device.

1

2

3

4

5

6

7

8

97-15669

COM Port

Non-Keyed

8-Position

Modular Plug

Tx Clock

Rx Data

Signal Ground

Tx Data

DTR

CD

RTS

Rx Clock

2

7

3

6

4

20

5

Tx Data

Signal Ground

Rx Data

DSR

RTS

DTR

CTS

Modem

DB25 Plug

No
Connection

No
Connection

Figure D-8.

Com Port to Modem Cable

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