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:
Feb. 24, 2015
Filed:
Nov. 23, 2010
Mingxing LI, San Jose, CA (US);
Jeffrey R. Evans, Lovettsville, VA (US);
John H. Wurster, Basking Ridge, NJ (US);
Priscilla Lau, Fremont, CA (US);
Mingxing Li, San Jose, CA (US);
Jeffrey R. Evans, Lovettsville, VA (US);
John H. Wurster, Basking Ridge, NJ (US);
Priscilla Lau, Fremont, CA (US);
Verizon Patent and Licensing Inc., Basking Ridge, NJ (US);
Abstract
Emergency call backs may be placed to a user device in a manner that bypasses certain features (e.g., call forwarding) that may be enabled by the device. A method may include receiving an emergency call from a user device; and creating, in response to the emergency call, an emergency session associated with the user device, where the creating includes forwarding the call to a public safety access point (PSAP) server that handles emergency calls. The method may further include receiving a call, such as an emergency call back call, destined for the user device; determining that the emergency session has not expired when an elapse time associated with the emergency session is less than a threshold; and forwarding, to the user device, the call, as a return call from the PSAP server, based on the determination that the emergency session has not expired.