©
Polycom, Inc.
193
ViewStation User Guide
C
V.35 Technical Information
General V.35 Information
The ViewStation is designed to be compatible with tested network
equipment without any modification from the user. If your network
equipment varies from conventional V.35 video implementations,
you can adjust the operation of the signals. Use the following
technical information with information provided by your network
equipment vendor to customize your V.35 interface.
Serial Interface Control Signals
The following table describes the configuration of each signal.
Signal
(Cable Pin)
Direction
Description
Configuration Option
ST (TC/TT)
OUT
Send Timing
(clock)
Normal: falling edge sends data
Inverted: rising edge sends data
RT (RC)
IN
Receive Timing
(clock)
Normal: rising edge receives data
Inverted: falling edge receives data
RTS (RTS)
OUT
Request To Send
Normal: high voltage is logic 1
Inverted: low voltage is logic 1
DCD (DCD)
IN
Data Carrier
Detect
Normal: high voltage is logic 1
Inverted: low voltage is logic 1
Filter: allow DCD to drop for 60 seconds
before changing call state
CTS (CTS)
IN
Clear To Send
Normal: high voltage is logic 1
Inverted: low voltage is logic 1
DTR (DTR)
OUT
Data Terminal
Ready
Normal: high voltage is logic 1
Inverted: low voltage is logic 1
On: constant high voltage
Note: if set to ON, inverted is not an
option.
DSR (DSR)
IN
Data Set Ready
Normal: high voltage is logic 1
Inverted: low voltage is logic 1
Answer: Use DSR as a Ring-In indicator
Содержание VIEWSTATION
Страница 1: ...ViewStation User Guide ViewStation User Guide November 2001 Edition 3725 10755 001 ...
Страница 2: ......
Страница 12: ...ViewStation User Guide xii www polycom com ...
Страница 16: ...Preface How To Use This Guide ViewStation User Guide xvi www polycom com ...
Страница 148: ...Chapter 3 Using the ViewStation ViewStation User Guide 132 www polycom com ...
Страница 186: ...Chapter 4 Using the ViewStation with a PC ViewStation User Guide 170 www polycom com ...
Страница 192: ...Chapter 5 System Information and Diagnostics ViewStation User Guide 176 www polycom com ...
Страница 218: ...Appendix C V 35 Technical Information ViewStation User Guide 202 www polycom com ...
Страница 226: ...Appendix D ISDN Information ViewStation User Guide 210 www polycom com ...
Страница 230: ...Chapter E Optional Equipment Configuration ViewStation User Guide 214 www polycom com ...