The final message to use the ACARS protocol was sent at 01:07; ACARS reports expected at 01:37 and 02:07 were not received. At 02:03 and 2:05, messages from the ground station went unanswered, indicating that the link was lost at some point between 1:07 and 2:03. After last contact by primary radar west of Malaysia, the following records were recorded in the log of Inmarsat's ground station at Perth, Western Australia (HH:MM:SS; UTC times 7–8 March):  The analysis of the satellite communication relies on a limited number of data points that were analysed using innovative techniques that were only developed after the incident. The analysis has worked to determine useful information about in-flight events and the location of Flight 370 at the 08:19 MYT signal—believed to have occurred near the time of fuel exhaustion and thus is close to the final location of Flight 370. Malaysian investigators set up an international working group—the Joint Investigation Team (JIT)—consisting of various agencies with experience in aircraft performance and satellite communications, to further analyse the signals between Flight 370 and the ground station, especially the signal at 08:19. These included representatives from the UK's Inmarsat, Air Accidents Investigation Branch, and Rolls-Royce; China's Civil Aviation Administration and Aircraft Accident Investigation Department; the US National Transportation Safety Board and Federal Aviation Administration; and Malaysian authorities. After initial analysis determined that Flight 370's last location was within Australia's Search and Rescue region in the southern Indian Ocean, Australia has played a major role in co-ordinating the analysis in conjunction with Malaysia. The Australian Transport Safety Bureau (ATSB) is responsible for the search for Flight 370 and has brought together a team of experts to determine the location of Flight 370 at the 08:19 communication. The team brought together by the ATSB includes the UK's Air Accidents Investigation Branch, Boeing, the Defence Science and Technology Organisation (Australia), Malaysia's Department of Civil Aviation, Inmarsat, the National Transportation Safety Board (US), and Thales. The analysis of communications from Flight 370 focuses on two key parameters associated with the messages:  A few deductions can also be made from the satellite communications. The first deduction that can be made from the satellite communications is that the aircraft remained operational until at least 08:19—seven hours after final contact was made with air traffic control over the South China Sea. The varying BFO values indicate the aircraft was moving at speed.