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:
Jun. 10, 1997
Filed:
Aug. 30, 1995
Louis G Gottlieb, Colorado Springs, CO (US);
Arunachalam Venkatraman, Cedar Rapids, IA (US);
MCI Corporation, Washington, DC (US);
Abstract
A conference system provides dial-out conference calls to participants who use various virtual private network dialing plans as well as place non-plan calls, such as Direct Distance Dialing and International Direct Distance Dialing. The conference system recognizes non-identical VPN dialing plans, as well as PSTN numbers, which all originate on a single Dedicated Access Line (DAL). When a dial-out conference call is originated on a DAL, a switch performs a database query to determine a VPN dialing plan. Based on a code provided along with the dialed telephone number, the database identifies the number as belonging to a particular VPN dialing plan and translates it into a physical termination. Alternatively, if the code indicates that the number does not belong to a VPN dialing plan, i.e, a DDD or IDDD number, it is unmodified by the database. Either translated or untranslated number is then returned to the switch for subsequent network routing to a physical termination.