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. 09, 2004
Filed:
Jun. 06, 2000
Maureen Brigid Gallagher, Naperville, IL (US);
Paul R. Sand, Woodridge, IL (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A calling and called telecommunications station are each connected to a packet access network. The packet access network under the control of a server system, determines whether an originating call should be routed via a core packet network, such as the Internet, or a Public Switched Telephone Network (PSTN). If the expected delay of packets through the core packet network is excessive, then the call will be connected through the Public Switched Telephone Network. If, during the course of a call, the packet delay becomes excessive, and causes the quality of voice transmission to be below acceptable standards, the call is switched from the packet network to the Public Switched Telephone Network. Advantageously, as many calls as can be handled by the packet network are switched through that network, thus resulting in substantial savings to the customer. Advantageously, the embedded PSTN can be used productively to handle overflows from the core packet network. Advantageously, the quality of voice calls through the core packet network can be maintained by re-routing existing calls through the PSTN when necessary.