Patent ID: 8259565

Claim:
A method comprising: transmitting a video call setup packet from a first mobile terminal to a second mobile terminal; storing the video call setup packet in a buffer associated with a modem layer in the first mobile terminal; filling an idle packet at the modem layer with stuffing flags for transmission to the second mobile terminal during an idle period of the first mobile terminal; when an acknowledgment packet for the video call setup packet has not been received from the second mobile terminal, replacing the idle packet with the stored video call setup packet, wherein the stored video call setup packet is retrieved from the buffer at the modem layer without regenerating the packet; and preemptively retransmitting the stored video call setup packet, instead of the idle packet, from the first mobile terminal to the second mobile terminal during the idle period of the first mobile terminal without waiting for expiration of a timeout period for receipt of an acknowledgement packet from the second mobile terminal.