Craft Interface Cable Pinouts

Connecting to DB9 Connector (for laptop computers):

8 pin Modular RJ45 Connector

DB9 Female Connector

1

Data Carrier Detect

4

Data Terminal Ready

2

Receive Data

3

Transmit Data

3

Transmit Data

2

Receive Data

4

Data Terminal Ready

1

Data Carrier Detect

5

Signal Ground

5

Signal Ground

8

Clear To Send

8

Clear To Send

Connecting to DB25 Connector (for modems):

8 pin Modular RJ45 Connector

DB25 Male Connector

1

Data Carrier Detect

8

Data Carrier Detect

2

Receive Data

3

Transmit Data

3

Transmit Data

2

Receive Data

4

Data Terminal Ready

20

Data Terminal Ready

5

Signal Ground

7

Signal Ground

8

Clear To Send

5

4

Clear To Send

Request To Send

On the DB25 side, Clear to Send and Request to Send should be tied together.
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