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:
May. 05, 2020
Filed:
Dec. 01, 2015
At&t Intellectual Property I, L.p., Atlanta, GA (US);
Geoffrey R. Zampiello, Norwalk, CT (US);
AT&T Intellectual Property I, L.P., Atlanta, GA (US);
Abstract
A provider edge router for handling 9-1-1 call routing is disclosed herein. The provider edge router can receive an Internet protocol ('IP') call and can determine whether the IP call is associated with a 9-1-1 service. If so, the provider edge router can set a priority for the IP call to be routed to a 9-1-1 edge router. The IP call, in some embodiments, includes a session initiation protocol ('SIP') call. In some embodiments, the provider edge router includes one or more dedicated 9-1-1 outbound interfaces through which the provider edge router routes the IP call to the 9-1-1 edge router or multiple 9-1-1 edge routers. In some embodiments, the priority can be set in a differentiated services field (“DSF”) that includes a differentiated services codepoint (“DSCP”) marking that cannot be removed by any router along a routing path for the IP call.