Chapter 5
System Information and Diagnostics
©
Polycom, Inc.
153
ViewStation FX/VS 4000 User’s Guide
Pass-Thru Mode
In Pass-Thru Mode, the operational modes of both endpoints’
RS-232 ports depend on the port configuration of each endpoint.
Thus, two operational situations might arise:
•
Pass-Thru Mode to Pass-Thru Mode: Both endpoints are set to
Pass-Thru Mode.
•
Pass-Thru Mode to Control Mode: The near site is set to
Pass-Thru Mode and the far site is set to Control Mode.
The following table summarizes the port operation based on the
RS-232 mode configured by each endpoint.
The following information describes operational modes in more
detail.
Pass-Thru Mode to Pass-Thru Mode
—Two stations set to
Pass-Thru Mode behave essentially as a null-modem between their
respective externally connected devices. These two stations can be
two ViewStation FXs, two VS4000s, or one ViewStation FX and one
VS4000. The RS-232 port is used as a data channel over an H.320
video call. Data received from the RS-232 port on the near-end
ViewStation FX or VS4000 station is pushed through the call to the
far-end endpoint and then transmitted to the endpoint’s RS-232 port.
Similarly, data from the far-end endpoint is transmitted back to the
near-end ViewStation FX (through the H.320 call) and then
transmitted to the near-end RS-232 port.
The data channel speed is dynamically allocated. The maximum
data flow rate is based on the bandwidth of the call.
Near-Side Mode
Far-Side Mode
Resulting Operation
Control
N/A
Near-side CLI (Command Line
Interface)
Pass-Thru
Control
The near-side controls the CLI
of the far side
Pass-Thru
Pass-Thru
The data is passed in
full-duplex mode from the
near-side RS-232 port to the
far-side RS-232 port
Содержание ViewStation FX
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Страница 14: ...Contents ViewStation FX VS4000 User s Guide xiv www polycom com ...
Страница 178: ...Chapter 6 Troubleshooting ViewStation FX VS 4000 User s Guide 164 www polycom com ...
Страница 196: ...Appendix C V 35 Technical Information ViewStation FX VS 4000 User s Guide 182 www polycom com ...
Страница 210: ...Appendix D PRI Technical Notes ViewStation FX VS 4000 User s Guide 196 www polycom com ...
Страница 212: ...Appendix E Frame Rate Specification For ViewStation FX VS4000 ViewStation FX VS 4000 User s Guide 198 www polycom com ...