System and method for implementing a mid-call policy in a RSVP environment

US7889636B2 · kind B2 · utility

Assignee

• Cisco Technology, Inc. · US

Inventors

• Subhasri Dhesikan · San Jose, US
• Denise Caballero-McCann · Raleigh, US
• Kevin Miller · Little Rock, US
• Rongxuan V. Chen · San Jose, US
• John K. Restrick, Jr. · Palo Alto, US
• Scott Henning · San Francisco, US
• Martin W. Wu · Plano, US
• Keith A. Lantz · Los Altos, US
• David Sauerhaft · Los Altos, US

Key dates

• Filing date: May 24, 2005
• Grant date: Feb 15, 2011
• Expiry date: Sep 9, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04M3/56
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A communication system includes a call agent that coordinates and supervises communications between endpoints. The call agent allocates a QoS agent for each endpoint involved in a call. The QoS agents generate reservations for the call in order to provide the call with a guaranteed amount of bandwidth and an established QoS. Each endpoint or location associated with an endpoint has a reservation policy that determines how calls are to be handled when a reservation is or is not obtained and when a reservation is lost or obtained during a call. The communication system is able to handle reservations, or the lack thereof, during various situations like on hold, call transfer, call forwarding, conference call, and shared line services.