Patent ID: 7426379

Claim:
In a mobile station having a user interface, wherein the user interface includes a microphone for receiving speech signals from a user, a speaker for playing out speech signals to the user, an output mechanism for presenting information to a user, and an input mechanism for receiving input from the user, wherein the input mechanism includes a push-to-talk (PTT) mechanism engageable by the user to invoke a PTT session as a packet based real time media session via a radio access network serving the mobile station, a method comprising: receiving, by user engaging of the PTT button, a user request to initiate a PTT session; responsive to the user request, beginning a session initiation process comprising sending a Session Initiation Protocol (SIP) INVITE message via a wireless packet data connection, seeking initiation of the PTT session, wherein a period of time from when the mobile station receives the user request until the PTT session is set up defines a setup period; and during the setup period, playing out to the user, via the user interface, a ring sound to indicate to the user that the PTT session is being set up, wherein when the mobile station is playing out the ring sound, the mobile station is not receiving the ring sound from another entity but is rather generating the ring sound itself.