Polycom EX 参考指南

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Chapter 1 - Introducing the ViewStation EX, ViewStation FX, and VS4000 Systems
© Polycom, Inc.
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Additional Security Features
Control remote access 
— The local administrator can specify which remote 
management interfaces can be used — FTP, Telnet, SNMP, or the ViewStation 
web interface. 
The local administrator may choose not to allow remote management.
Connect encryption equipment to the system 
— Add the optional Serial 
V.35/RS-449/RS-530 Network Interface Module to support V.35, RS-449, and 
RS-530 devices.
Use an optical dialing isolator
 — The Serial V.35/RS-449/RS-530 Network 
Interface Module supports NSA-approved optical dialing isolators.
Easy Calling
Multipoint calling 
 You can place IP, ISDN, and mixed calls that include up 
to three other sites at once using the internal multipoint capability. This is 
standard on ViewStation FX and VS4000, and optional on the ViewStation EX.
For information about purchasing the multipoint call option for ViewStation EX, please 
contact your Polycom distributor.
Cascaded multipoint calls 
— The sites that you call may also call other sites. 
By calling up to three other sites, and allowing each of them to add one or two 
more sites, you can connect up to ten sites in a call without using an external 
bridge.
Dial-in calling
 — Allow others to call your system (IP, ISDN, or analog 
telephone line) while it is in a call, for additional flexibility in multipoint 
calling.
Rich Conference Experience
See more with single-monitor systems
 — Use the continuous presence 
viewing mode to show all sites on a single monitor. 
Additional monitors
 — Connect an additional television monitor to show the 
far site, and a VGA monitor or projector to show presentation material. The 
ViewStation FX and VS4000 allow you to connect up to three additional 
television monitors, for a total of four.
Additional camera 
— Add a document camera to show printed documents 
and other objects. The ViewStation FX and VS4000 also allow you to add an 
auxiliary pan/tilt/zoom (PTZ) camera to provide a second view of your site.