Administrator’s Guide for Polycom HDX Systems
2–14 Polycom, Inc.
Configuring the System to Use a Gateway
A gateway performs code and protocol conversion between H.323 (IP), SIP,
and H.320 (ISDN), so that users on different networks can call one another. If
the system is configured to use a gateway, you must also configure it to use a
gatekeeper. For more information, refer to Configuring the System to Use a
Gatekeeper on page 2-9.
To configure the system to use a gateway:
1 Do one of the following:
— In the local interface, go to System > Admin Settings > Network > IP
> H.323 Settings (select if necessary).
— In the web interface, go to Admin Settings > Network > IP Network
> H.323 Settings.
2 Configure these settings:
Setting Description
Country Code Specifies the country code for the system’s location.
Area Code Specifies the area or city code for the system’s location.
Number Specifies the gateway’s number.
H.323 Extension
(E.164)
Specifies the extension that identifies this system for incoming
gateway calls.
The default H.323 Extension can be changed.
Gateway
Number Type
Specifies the number type users enter to call this system:
• Direct Inward Dial — Users enter an internal extension to
call this system directly.
Note: If you choose this setting, you must also register
the number with the gatekeeper as an E.164 alias.
• Number + Extension — Users enter the gateway number
and the system’s extension to call this system.
Number of
Digits in DID
Number
Specifies the number of digits in the DID number.
The national or regional dialing plan for your location
determines the standard number of digits. For instance, the
US standard is 7 digits.
Number of
Digits in
Extension
Specifies the number of digits in the extension used when
Direct Inward Dial is selected.
Your organization’s dial plan determines this number.
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