Patent ID: 7319879

Claim:
A method for establishing an Instant Access voice call in a wireless communication system, the method comprising: receiving, from a first mobile station, a first request to initiate an Instant Access voice call, wherein the request proposes a first mode of the Instant Access voice call; in response to receiving the first request, paging a second mobile station with a paging message, wherein the paging message informs of the proposed mode of the Instant Access voice call; in response to paging the second mobile station, receiving, from the second mobile station, a second request to initiate an Instant Access voice call, wherein the second request proposes a second mode for the Instant Access voice call; and in response to receiving the second request, inquiring of the first mobile station whether the first mobile station accepts the proposed second mode of the Instant Access voice call, wherein one mode of the first and second modes is an emulated dispatch mode and the other mode of the first and second modes is an interconnect mode.