Registering a Zillion Aliases (Q101)

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How does an H323-PSTN GW that is supposed to handle thousands or more phone numbers tell the GK about its number range? An RRQ contains an endpointType, which will, in the GW case, contain a GatewayInfo SEQUENCE that contains some SupportedProtocols (in the voice-only GW case, presumably just "voice"). In H.323v2, each of these SupportedProtocols contains a SEQUENCE OF dial prefixes. This is where the number ranges are specified by way of prefixes. Also, most GKs support some form of static configuration to do the same job by less elegant means if either GW or GK is version 1 or doesn't support this feature for other reasons.