Polycom HDX 4000 Series Administrator's Manual page 43

Administrator's Guide for Polycom HDX Systems
2–10
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Configure these settings:
2
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.
• Specify with PIN — Calls use the specified E.164
address and require an Authentication PIN. This setting
is available only when the Avaya® option key is installed.
H.323 Name Specifies the name that gatekeepers use to identify this
system. You can make point-to-point calls using H.323
names if both systems are registered to a gatekeeper.
The H.323 Name is the same as the System Name, unless
you change it. Your organization's dial plan may define the
names you can use.
H.323 Extension Specifies the extension that gatekeepers and gateways use
(E.164) to identify this system.
Your organization's dial plan may define the extensions you
can use.
Primary • If you chose No for the Use Gatekeeper field, the
Gatekeeper IP Primary Gatekeeper IP Address field is not displayed.
Address
• 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,
gatekeeper.companyname.usa.com, or
10.11.12.13).
The primary gatekeeper IP address contains the IPv4 or IPv6
address with which the system registers. As part of the
gatekeeper registration process, the gatekeeper might return
alternate gatekeepers. If communication with the primary
gatekeeper is lost, the HDX system registers with the
alternate gatekeeper but continues to poll the primary
gatekeeper. If the system reestablishes communications with
the primary gatekeeper, the HDX system unregisters from the
alternate gatekeeper and reregisters with the primary
gatekeeper.
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.
Polycom, Inc.