Polycom Webcam - Manual (Page 203)

Chapter 6 - Using Advanced System Features
© Polycom, Inc. 2003 201
Multipoint Cascading Capabilities
ViewStation EX systems can be cascaded with other ViewStation EX,
ViewStation FX, or VS4000 systems to place a multipoint ISDN
(H.320) call, a H.323 (IP) call, or a mixed protocol (ISDN and IP) call
with up to ten sites.
Note
This feature is optional. In order to enable this feature and all
multipoint-related capabilities, you must upgrade your system to
support multipoint calls. For more information, refer to
Upgrading
the System for Multipoint Calls .
The Cascading feature allows to add more video and audio
participants to a multipoint video call, without the need for a bridge.
Each of the second-level ViewStation EX systems in a four-site
multipoint call can call up to two more video and one audio site. The
called placed to the audio site is a POTS call. Up to ten total video
sites and four total audio sites can participate in the call using the
built-in MCU.
Figure 6-1. Cascading 10 Sites in a Multipoint Call