Polycom VSX 3000

Administrator’s Guide for the VSX Series
2 - 8
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.
To configure the system to use a gateway:
1. Go to System > Admin Settings > Network > IP > H.323 Settings.
2. Select two or three times and configure these settings on the
Gateway screen:
3. Select and enter a prefix or suffix for each bandwidth you want to
allow for gateway calls.
Associating prefixes and suffixes with particular bandwidths on your
gateway can optimize the use of bandwidth by your organization. Be sure
the gateway is configured to use the same prefixes and suffixes you define
for the system.
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.