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:
Oct. 31, 2017
Filed:
Feb. 22, 2017
Metaswitch Networks Ltd., Enfield, GB;
Salem Amin Al-Damluji, Enfield, GB;
George Malcolm Gilbert, Enfield, GB;
METASWITCH NETWORKS LTD, Enfield, GB;
Abstract
Measures, including methods, apparatus and computer programs, for use in operating a network node. At the network node a database of session description protocol (SDP) precondition preference data for a plurality of network elements is maintained. A session initiation protocol (SIP) message directed towards a downstream network element is received. The received message includes SDP data. A lookup in the database in relation to the received SIP message is performed to retrieve SDP precondition preference data for the downstream network element. The received SIP message is processed according to the retrieved SDP precondition preference data. The processed SIP message is transmitted to the downstream network element.