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