Q. Show the Function of Signals?
- TD transmitted data
- RD received data
- DSR data set ready
- Indicate whether DCE is powered on
- DTR signifies data terminal ready
- Indicate whether DTR is powered on
- Turning off DTR results modem to hang up the line
- RI denotes ring indicator
- ON when modem detects phone call
- DCD: data carrier detect
- ON when two modems have negotiated effectively and the carrier signal is established on the phone line
- RTS denotes to request to send
- ON when DTE wants to send data
- Utilized to turn on and off modem's carrier signal in multi-point (that is multi-drop) lines
- Usually constantly ON in point-to-point lines
- CTS denotes clear to send
- ON when DCE is prepared to receive data
- SG denotes signal ground