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Third party initiated call setup for H.323 environment

IP.com Disclosure Number: IPCOM000005037D
Publication Date: 2001-Aug-01
Document File: 2 page(s) / 72K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for third-party initiated call setup for the H.323 environment. Benefits include support for third-party applications or service providers to initiate a call setup on behalf of two other H.323 Terminals.

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Third party initiated call setup for H.323 environment

Disclosed is a method for third-party initiated call setup for the H.323 environment. Benefits include support for third-party applications or service providers to initiate a call setup on behalf of two other H.323 Terminals.

In the next generation networks, calls may be originated from third party applications instead of the IP telephony endpoint itself. The first call setup is initiated from the Gatekeeper to the first call leg as an in-bound Gatekeeper-routed call. When the first endpoint picks up the call, the Gatekeeper initiates the second call setup to another leg. After the second call leg is connected, the Gatekeeper combines these two separate call legs and starts H.245 control channel setup between them. The Gatekeeper functions as it would for a regular routed call. This model works for other media types also.

Conventionally, H.323 endpoints do not support third-party originated call setup. Calls are originated and answered by H.323 endpoints only. The disclosed method enables a modified Gatekeeper (part of the IP telephony network) that can provide access to initiate calls between two endpoints.

Fig. 1

Disclosed anonymously