The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 23, 2015

Filed:

Oct. 30, 2012
Applicant:

Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;

Inventors:

Jan Lidin, Huddinge, SE;

Fredrik Pejmo, Sollentuna, SE;

Jan Hultkrantz, Bromma, SE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 12/58 (2006.01);
U.S. Cl.
CPC ...
H04L 29/06326 (2013.01); H04L 12/581 (2013.01); H04L 65/1069 (2013.01);
Abstract

A method, Call Agent (CA), and circuit-switched terminal for setting up a multimedia session from the circuit-switched terminal toward a packet-switched terminal in a telecommunication network. An Instant Messaging (IM) server receives an IM message from the circuit-switched terminal and forwards the contents of the IM message to the CA. The CA generates or retrieves a unique call token that identifies the terminals, and sends the call token to the IM server, which forwards the token to the circuit-switched terminal. In response, the circuit-switched terminal initiates setup of a circuit-switched call to an identified Media Gateway Controller (MGC). The MGC then sets up a packet-switched session with the packet-switched terminal to complete the setup of the multimedia session.


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