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ViewStation EX User Guide
192 www.polycom.com
Mixed Protocol Dialing
Mixed Protocol Dialing allows users with IP (H.323) and ISDN
(H.320) systems to participate in a multipoint videoconference at the
same time. With this feature, videoconferencing is not limited to
either H.320-only calls or H.323-only calls. All calls are connected at
the same speed. Currently, downspeeding is automatically
performed when necessary.
Mixed Protocol Dialing takes advantage of OneDial by allowing
endpoints to dial your system by name from the Global Address
Book without having to worry about which number to dial or which
dialing protocol to use. For more information about OneDial, refer
to the Integrators’ Reference Manual for ViewStation EX, ViewStation
FX, and VS4000.
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 in chapter 2.
Different Ways to Place a Mixed Protocol Call
A Mixed Protocol call can be placed in one of the following five
ways using the ViewStation user interface:
❑ Using the Manual Dialer (Video Phone screen). With this
method, the user establishes the first call, then adds a second,
and possibly a third call. The Manual Dialer allows the user to
select IP or ISDN. For more information about how to place this
type of call, refer to Using the Manual Dialer (Video Phone)
, on
page 187.
❑ Creating an Address Book meeting entry. This entry consists of
mixed ISDN and IP sub-entries. The user can decide what type
of call will be made when creating or editing the entry. For more
information about how to place this type of call, refer to Using
an Address Book Meeting Entry, on page 189.