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:
Mar. 20, 2001
Filed:
Jun. 09, 1998
Koan S. Chong, East Brunswick, NJ (US);
Martin C. Dolly, Lanoka Harbor, NJ (US);
Andrew R. Jacob, Ocean, NJ (US);
Carolyn R. Johnson, Atlantic Highlands, NJ (US);
Wonseok Lee, Atlantic Highlands, NJ (US);
David George Lewis, Freehold, NJ (US);
Pamela M. Moricz, Aberdeen, NJ (US);
Mark A. Ratcliffe, Oakhurst, NJ (US);
AT&T Corp., New York, NY (US);
Abstract
A telecommunications network includes at least an active and a standby call server, the standby call server becoming active upon failure of the active call server. To facilitate rapid switch-over from the active to the standby call server and to prevent the loss of call processing data for calls in the call setup stage, the active call server sends call information to the standby call server during intervals in which the active call server is awaiting subsequent signaling messages from elements of the telecommunications network. In this way, the standby call server has the call information needed to commence call processing upon failure of the active call server, and the active call server makes efficient use of time while awaiting a reply signaling message.