Serial Cable Pinout And Connections (Vs4000) - Polycom ViewStation EX Api Manual

RS-232 Serial Cable Pinout and Connections (VS4000)
© Polycom, Inc. 2003
ViewStation EX, ViewStation FX, and VS4000 API Guide
The RS-232 serial cable has a 9-pin DB-9 connector on both ends.
It is used to connect the VS4000 to a terminal or another
communications device.
Pin Number
1 - DCD
2 - RX
3 - TX
4 - DTR
5 - GND
6 - DSR
7 - RTS
8 - CTS
9 - RI
Function
Data Carrier Detect
Receive
Transmit
Data Terminal Ready
Ground
Data Set Ready
Ready to Send
Clear to Send
This pin is not used.
9