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.
Patent No.:
Date of Patent:
Jun. 30, 2009
Filed:
Sep. 07, 2004
Thomas Hanna, Detmold, DE;
Klaus-josef Kunte, Borchen, DE;
Jörg Littmann, Delbrück, DE;
Ingolf Thiele, Erwitte, DE;
Thomas Hanna, Detmold, DE;
Klaus-Josef Kunte, Borchen, DE;
Jörg Littmann, Delbrück, DE;
Ingolf Thiele, Erwitte, DE;
Siemes Aktiengesellschaft, Munich, DE;
Abstract
There is described a Session Initiation Protocol (SIP) network entity for operating in a communications channel between a first SIP end point and a second SIP end point in a communication network. The first SIP end point has available a first set of communication features and the second SIP end point has available a second set of communication features, including at least one communication feature, for example Music on Hold, that is unavailable to the first SIP end point. The network entity acts as a client application for the first SIP end point and as a server application for the second SIP end point and is arranged to exchange signaling information with the SIP end points to enable the second SIP end point to utilize the at least one communication feature during communications with the first SIP end point.