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:
Nov. 01, 2005
Filed:
Apr. 25, 2001
Xuewen LI, Cary, NC (US);
Carroll L. Gray-preston, Morrisville, NC (US);
Samuel H. Christie, Iv, Cary, NC (US);
Junhui MA, Cary, NC (US);
Xuewen Li, Cary, NC (US);
Carroll L. Gray-Preston, Morrisville, NC (US);
Samuel H. Christie, IV, Cary, NC (US);
Junhui Ma, Cary, NC (US);
Nortel Networks Limited, St. Laurent, CA;
Abstract
The present invention provides for a multiple appearance directory number (MADN) group including terminals on both the public switched telephone network (PSTN) and a packet-switched network. The terminals within the MADN group are preferably on the PSTN and a packet-switched network under the control of the PSTN. While call signaling is centralized and provided by the PSTN, a full complement of PSTN services are available to the terminals on the packet-switched network. With centralized call control and access to services from the PSTN, IP terminals on the packet-switched network are treated as if they were PSTN terminals by PSTN elements, and are capable of implementing PSTN features and functions.