Patent ID: 7809389

Claim:
A method of communicating in a press-to-talk session, comprising: sending, by a mobile station, a message for requesting a right to talk in the press-to-talk (PTT) session over a wireless link between the mobile station and a base station system, wherein sending the message for requesting the right to talk in the PTT session comprises sending the message in wireless signaling over the wireless link; receiving, at the mobile station, an acknowledgment of the wireless signaling carrying the message, the acknowledgment having been sent by the base station system in response to the wireless signaling rather than the message for requesting the right to talk; providing an indication at the mobile station of the right to talk in response to the acknowledgment; and after receiving the acknowledgement of the wireless signaling and providing the indication, receiving a further message containing a grant of the message for requesting the right to talk, wherein the grant is generated by a PTT server that received the message for requesting the right to talk.