Patent ID: 8041376

Claim:
A method in a Push-To-Talk (PTT) service entity for use in a wireless communication network within which a communication device operates, the PTT service entity being configured to receive from the communication device a PTT communication request for transmitting a PTT communication, send to the communication device an indication to transmit the PTT communication in response to the PTT communication request, and receive from the communication device the PTT communication in response to the indication to transmit, the method in the PTT service entity comprising the acts of: receiving, from the communication device, a communication device indication which indicates that support exists for buffering media data of the PTT communication with use of a buffer of the communication device; producing a network indication which controls use of the buffer of the communication device for buffering the media data of the PTT communication during PTT communication session establishment and prior to the communication device's receipt of the indication to transmit the PTT communication; and causing the network indication to be transmitted to the communication device via the wireless communication network.