User’s Guide for Polycom HDX Room Systems
30 Polycom, Inc.
Placing a Multipoint Call
How you place a multipoint call depends on whether you’re using a Polycom
HDX system with multipoint capabilities or a bridge such as the Polycom
MGC or Polycom RMX conference platform. The number of sites allowed in
the call is determined by the capabilities of the system or bridge hosting the
call. The call can include any combination of IP H.323, SIP, ISDN, V.35/Serial,
and audio-only endpoints, although some ISDN systems might not be
configured to allow mixed IP and ISDN calls. For more information about call
types, refer to Types of Video Calls You Can Make on page 7.
•For calls hosted by a Polycom HDX system, you can define a group in the
directory to call all of the sites at one time. Alternatively, you can place a
call to the first site, and then add other sites after the first call connects. The
other sites can call the Polycom HDX system to join the call.
•For calls hosted by a bridge, you might need to enter calling information
about all of the sites before the call begins. Contact your system
administrator for more information.
To place a multipoint call by adding sites to a call:
1Call the first site.
2When the call connects, press Call on the remote control.
3Place a call to the next site. For more information, refer to Placing a Call
on page 4.
4Repeat steps 2 and 3 until all sites are connected.
To place a multipoint call using a directory group:
1Press Directory on the remote control.
2Highlight a group folder in the directory list.
3Press Call to place the call.
Depending on how your system is configured, it attempts to call the group
using a pre-defined list of call types. Contact your system administrator
for more information.
To place a cascaded multipoint call:
1Call a group from the directory, or place calls one at a time to several
other sites. For more information, refer to Placing a Call on page 4.
2Ask each site to call additional sites.