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Administrator’s Guide for the Polycom RealPresence Group Series Networks
Polycom, Inc. 38
To configure the system to use a gatekeeper:
1 In the web interface, go to Admin Settings > Network > IP Network > H.323 Settings.
2 Configure the following settings.
SIP Settings
If your network supports the Session Initiation Protocol (SIP), you can use SIP to connect IP calls.
Setting Description
Use Gatekeeper Select this setting to use a gatekeeper. Gateways and gatekeepers are required for
calls between IP and ISDN.
• Off — Calls do not use a gatekeeper.
•Auto — System attempts to automatically find an available gatekeeper.
• Specify — Calls use the specified gatekeeper. This option must be selected to
enable H.235 Annex D Authentication.
When you select a setting other than Off, the Registration Status is displayed
below the Enable IP H.323 setting.
Require Authentication Enables support for H.235 Annex D Authentication.
When H.235 Annex D Authentication is enabled, the H.323 gatekeeper ensures
that only trusted H.323 endpoints are allowed to access the gatekeeper.
This setting is available when Use Gatekeeper is set to Specify.
User Name When authentication is required, specifies the user name for authentication with
H.235 Annex D.
Enter Password When authentication is required, specifies the password for authentication with
H.235 Annex D.
Current Gatekeeper IP
Address
If you chose Off for the Use Gatekeeper field, the Current Gatekeeper IP
Address field is not displayed.
Displays the IP address that the gatekeeper is currently using.
Primary Gatekeeper IP
Address
• If you chose Off for the Use Gatekeeper field, the Primary Gatekeeper IP
Address field is not displayed.
• If you chose to use an automatically selected gatekeeper, this area displays the
gatekeeper’s IP address.
• If you chose to specify a gatekeeper, enter the gatekeeper’s IP address or name
(for example, 10.11.12.13 or gatekeeper.companyname.usa.com).
The primary gatekeeper IP address contains the IPv4 address the system registers
with. As part of the gatekeeper registration process, the gatekeeper might return
alternate gatekeepers. If communication with the primary gatekeeper is lost, the
RealPresence Group system registers with the alternate gatekeeper but continues
to poll the primary gatekeeper. If the system reestablishes communications with the
primary gatekeeper, the RealPresence Group system unregisters from the
alternate gatekeeper and reregisters with the primary gatekeeper.
Polycom RealPresence Group 300 systems cannot be enabled for multipoint calling.