Modem

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serial interface cable This cable should be used for DTE to DCE (for instance computer to modem) connections with hardware handshaking.

9 pin D-SUB female connector layout 9 pin D-SUB female connector to the Computer

25 pin D-SUB male connector diagram 25 pin D-SUB male connector to the modem

Modem DSUB9 to DSUB25 cable

Female Male Dir
Shield 1
Transmit Data 3 2
Receive Data 2 3
Request to Send 7 4
Clear to Send 8 5
Data Set Ready 6 6
System Ground 5 7
Carrier Detect 1 8
Data Terminal Ready 4 20
Ring Indicator 9 22

Modem DSUB25 to DSUB25 cable

Female Male Dir
Shield Ground 1 1
Transmit Data 2 2
Receive Data 3 3
Request to Send 4 4
Clear to Send 5 5
Data Set Ready 6 6
System Ground 7 7
Carrier Detect 8 8
Data Terminal Ready 20 20
Ring Indicator 22 22

Notes

References

Category:Serial Cables

 

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