Patent ID: 6366577
Filing Date: 2002-04-02
Classification: H04L,H04M,H04Q,Y10S

Abstract:
A method of providing quality of service (QoS) in an Internet Protocol (IP) telephony session between a calling party and a called party, comprising the steps of:providing transporting IP media for said session between said calling party and a first device having IP capability; providing transporting IP media for said session between said called party and a second device having IP capability; establishing an IP connection between said first device and said second device; and reserving network resources for said telephony session; generating a first session initiation protocol (SIP) call setup request with QoS by an SIP client; transporting said first call setup request to a first SIP proxy server; generating a second SIP call setup request with QoS by said first SIP proxy server to a second SIP proxy server; generating a third SIP call setup request with QoS by said second SIP proxy server to a remote client; provisioning policy in said second device and said second SIP proxy server; provisioning policy in said first device and said first SIP proxy server upon successful provisioning of policy in said second device and said second SIP proxy server; and notifying said SIP client of the call progress.