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:
Jul. 22, 2008
Filed:
May. 13, 2005
Krishnakant Patel, Dallas, TX (US);
Gorachand Kundu, Bangalore, IN;
Ravi Ayyasamy, Richardson, TX (US);
Basem A. Ardah, Plano, TX (US);
Krishnakant Patel, Dallas, TX (US);
Gorachand Kundu, Bangalore, IN;
Ravi Ayyasamy, Richardson, TX (US);
Basem A. Ardah, Plano, TX (US);
Kodiak Networks, Inc., San Ramon, CA (US);
Abstract
A roaming gateway for support of advanced voice services while roaming in wireless communications systems. The roaming gateway supports push-to-talk (P2T) calls, or other advanced voice services, when P2T subscribers roam from their home network (i.e., a network operated by their service provider where the subscriber's profile resides) into a foreign network (i.e., a network operated by another service provider). The roaming gateway is a specialized version of a real-time exchange that is located in the home network and is connected to mobile switching centers in foreign networks, so that the mobile switching centers in the foreign networks need not be programmed for the advanced voice services.