1. An apparatus for providing quality of service in an Internet Protocol (IP) telephony session between a calling party and a called party, comprising: a calling party station; a first device coupled to the calling party station, the first device having IP capability; a first session initiation protocol client coupled to the first device; a first session initiation protocol proxy server coupled to the first session initiation protocol client; a second session initiation protocol proxy server coupled to the first session initiation protocol proxy server; a second device coupled to the second session initiation protocol proxy server, the second device having IP capability; and a called party station coupled to the second device.