Patent ID: 7787440

Claim:
A method for establishing a VoIP session between a first wireless device and a second wireless device, the method comprising: sending a Session Initiation Protocol (SIP) request from the first wireless device to the second wireless device over a first air interface signaling channel to establish a Voice over Internet Protocol (VoIP) session that occurs on a first air interface traffic channel between the first and second wireless devices, wherein the first wireless device communicates with a first wireless network via a first air interface that includes the first air interface signaling channel and the first air interface traffic channel, wherein the first air interface signaling channel is shared by multiple wireless devices and carries communications that are used to establish the first air interface traffic channel, and wherein the first air interface traffic channel is dedicated for single use by the first wireless device and carries voice packets that are part of the VoIP session; sending a resource request to a base station controller in the first wireless network over the first air interface signaling channel, thereby beginning a process of establishing the first air interface traffic channel for communicating with the first wireless network; receiving a SIP response from the second wireless device over the first air interface signaling channel; establishing the VoIP session without the first wireless device first establishing the first air interface traffic channel; subsequent to said establishing the VoIP session, establishing the first air interface traffic channel with the first wireless network; and the first wireless device communicating a voice packet with the second wireless device via the first air interface traffic channel.