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Db25s connector, Db25s connector with v.35 interface, Appendix – Multi-Tech Systems MT56DSU-S User Manual

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32

Appendix

DB25S Connector

13 12 11 10 9 8 7 6 5 4 3 2 1

25 24 23 22 21 20 19 18 17 16 15 14

Figure B-2. Connector

DESCRIPTION

This connector ties the MT56DSU-S to the DTE. The DB25S connector has the following pinout
configuration.

PIN IDENTIFICATION

Pin

Description

Signal

1

Chassis Ground

2

Transmit Data

SD

3

Received Data

RD

4

Request To Send

RTS

5

Clear To Send

CTS

6

Data Set Ready

DSR

7

Signal Ground

SG

8

Carrier Detect

CD

15

Transmit Clock

TC

17

Receive Clock

RC

20

Data Terminal Ready

DTR