ISDN Router Manual V.1.1
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APPENDIX
APPENDIX 1 DCE 9Pin D Type Connector Definition
1
2
3
5
4
6
7
8
9
Pin
Signal Name
Direction
Description
3
SD, Send Data
à
DTE send data to TA
2
RD, Receive Data
ß
TA send data to DTE
7
RS, Request to Send
à
DTE request to send data
8
CS, Clear to Send
ß
TA inform DTE can to send data
6
DR, Data Set Ready
ß
TA is ready receiving command from DTE
5
SG, Signal Ground
ß
TA signal ground (GND)
1
CD, Carrier Detect
ß
TA inform DTE that has a call incoming already
4
ER, Data Terminal Ready
à
DTE is ready, it can working now
9
CI, Ring Indication
ß
incoming ring indication
