Patent ID: 7260414
Filing Date: 2007-08-21
Classification: H04L,H04W

Abstract:
1. A method for initializing a push-to-talk call over a wireless communication network, comprising: receiving a push-to-talk initialization request in an initiating wireless communication device; sending a call message from the initiating wireless communication device to a uniquely identified recipient, wherein the call message is sent in a first control channel over the wireless communication network; receiving a connection status message in the initiating wireless communication device, in response to the call message, wherein the connection status message is received in a second control channel over the wireless communication network; opening an audio channel on the initiating wireless communication device responsive to the connection status message; activating a microphone on the initiating wireless communication device responsive to the connection status message; receiving audio via the activated microphone; storing the received audio in a buffer on the initiating wireless communication device.