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:
May. 11, 2004
Filed:
Jan. 07, 2000
David William Geen, King George, VA (US);
Narasimha K. Nayak, Glen Allen, VA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
An IP telephony gateway and a voice mail resource enable a voice mail subscriber to place an outgoing call to a destination party from a voice mail session via a first Real Time Protocol (RTP) data stream according to the voice over IP (H.323) protocol, and resume the voice mail session upon completion of the outgoing call with the destination party. The voice mail resource initiates a second RTP data stream to a destination party, and uses the Empty Capability Set feature in the H.323 standard to cause the IP telephony gateway to close the first and second RTP data streams to the voice mail resource. The voice mail resource then issues Non-Empty Capability Set messages to the IP telephony gateway for the first and second RTP data streams, causing the IP telephony gateway to internally bridge the first and second RTP data streams, and later to resume the voice mail session.