Method of implementing a call transfer from the active status in a communications network based on ITU-T standard H.323

• US 6,466,662 B1
• Filed: 12/21/1998
• Issued: 10/15/2002
• Est. Priority Date: 12/21/1998
• Status: Expired due to Fees

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Klaghofer, Karl, Korpi, Markku
• Primary Examiner(s): Matar, Ahmad F.
• Assistant Examiner(s): TIEU, BENNY QUOC
• Application Number:
  US09/469,000
• Time in Patent Office: 1,394 Days
• Field of Search: 379/212.01, 379/211-1-2, 379/213.01, 379/214.01, 379/215.01, 379/201-1-2, 379/220.01, 379/221.01, 379/229, 379/225, 379/258, 379/268, 379/269, 370/355, 370/356, 370/912, 370/389, 370/400, 370/401
• US Class Current: 379/212.01
• CPC Class Codes: H04M 3/58 Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party substation line holding circuits H04M1/80
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42

Abstract

A call transfer may be prompted by a first endpoint, from the active status—open bearer channels between the first endpoint and a second endpoint—in a communications network based on ITU-T Standard H.323. The call transfer is effected by a series of steps, namely a facility message for call transfer, including an address for the third endpoint, is transmitted to a proxy function; a connection setup message is transmitted from the proxy function to the third endpoint and the third endpoint responds by transmitting a call connect message to the proxy function; the connection between the first endpoint and the second endpoint is released; and the proxy function initiates a connection to be set up between the second endpoint and the third endpoint.

Claims

1. A method of setting up a connection, prompted by a first endpoint during an existence of a connection between the first endpoint and a second endpoint, in a communications network based on ITU-T Standard H.323, between the second endpoint and a third endpoint, which comprises the following method steps:

transmitting a facility message for call transfer, including an address for a third endpoint, to a proxy function;

transmitting a connection setup message from the proxy function to the third endpoint;

transmitting a call connect message from the third endpoint to the proxy function;

releasing a connection between the first endpoint and the second endpoint; and

prompting, with the proxy function, for a connection to be set up between the second endpoint and the third endpoint.

2. The method according to claim 1, which comprises prompting, with the proxy function, for the connection between the first endpoint and the second endpoint to be released.