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APPENDIX C
PIN CONFIGURATIONS
EIA - 232
EIA - 574
EIA - 561
DIRECTION DCE STANDARD SETTING DIRECTION
1 - (FG) Frame Ground ------
2 - (TD) Transmit Data Input
3 - (RD) Receive Data Output
4 - (RTS) Request to Send Input
5 - (CTS) Clear to Send Output
6 - (DSR) Data Set Ready Output
7 - (SG) Signal Ground ------
Input Data Term. Ready (DTR) - 20 8 - (DCD) Data Carrier Detect Output
Output Ring Indicator (RI) - 22
DIRECTION DCE STANDARD SETTING DIRECTION
Output Data Set Ready (DSR) - 6 1 - (DCD) Data Carrier Detect Output
Input Request to Send (RTS) - 7 2 - (RD) Receive Data Output
Output Clear to Send (CTS) - 8 3 - (TD) Transmit Data Input
Output Ring Indicator (RI) - 9 4 - (DTR) Data Term. Ready Input
5 - (SG) Signal Ground ------
DCE STANDARD SETTING DIRECTION
1 - DSK Output
2 - DCD Output
3 - DTR Input
4 - SG ------
5 - RD Output
6 - TD Input
7 - CTS Output
8 - RTS Input