2
3
4
5
6
7
8
20
22
RPSD (DCE)
Transmit Data
2
Receive Data
3
Request to Send
4
Clear to Send
5
Data Set Ready
6
Signal Ground
7
Data Carrier Detect
8
Data Terminal Ready
20
Ring Indicator
22
Terminal or Printer
(DTE)
FIGURE
DB25 Connections From RPSD Lock or Key to Data Terminal Equipment
