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| Chapter 3 – Related MultiVOIP Setup Parameters | |
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| Services Screen Definitions (cont’d) |
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| Field Name | Values | Description |
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| V2 GW Prefixes | H.323 Version 2 enables the gateway to specify prefixes that the user should |
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| dial before the WAN number in order to make a call using a certain medium. |
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| E.g., the user could dial the prefix 3 for voice calls or 77 for H.320 video calls. |
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| The prefixes are defined in the RRQ message at registration. Prefix can be any |
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| H.323 alias, including an H.323 ID & mail address. |
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| When a terminal places a LAN to WAN call, it should add one of the prefixes to |
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| the dialed number. The Gatekeeper identifies the prefix & routes the call to the |
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| appropriate gateway. If more than one gateway supplies the same prefix, line |
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| hunting is possible between the gateways. |
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| Prefix |
| Identifies the service. The prefix can be a numeric code, alphanumeric string, |
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| name, or phone number that the user dials. Per H.323 Vers. 2, prefixes can also |
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| be of URL and |
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| prefix. For example, TEL: 3 or NAME: John. |
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| Description |
| A description of the service that is accessible by dialing the prefix. |
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| Default |
| Select to make the service accessible to all endpoints that are not predefined in |
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| the zone. |
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| Public |
| Select to make the service accessible to all endpoints that are not part of the |
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| zone. |
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| Dynamic | Y/N | Indicates whether the service is static (essentially permanent) or timed & |
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| conditional (dynamic). This field indicates whether the service has been added |
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| manually |
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| part of registration from endpoints. |
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| Buttons | These buttons allow you add, edit, or delete a selected service or prefix. |
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