-50 Sec: Tu-154 TCAS: "Traffic, traffic".
-45 Sec: Zurich-south: "VTS29E ... Descend, flight level 350, expedite, traffic." (Controller to the Tu-154, call sign VTS29E. Dots designate unintelligible words or parts of phrases.)
-40 Sec: Tu-154 cockpit area mike: "Begin descent." (It is most probable that this phrase in Russian belongs to the Tu-154 commander.)
-38 Sec: Boeing TCAS: "Descend, descend!"
-35 Sec: Tu-154 TCAS: "Climb, climb!"
-34 Sec: Tu-154 cockpit area mike: "Climb!, it says" (One of the crew members Tu-154, most likely the First Officer, repeats the TCAS alert.)
-32 Sec: Tu-154 cockpit area mike: "Descend, b..." (This is said with confidence, implying that ATC instructions are of greater importance than TCAS alerts.)
-30 Sec: Zurich-south: "VTS29E, descend to flight level 350, expedite descent."
-25 Sec: Tu-154 "VTS29E expediting to flight level 350, VTS29E."
-20 Sec: Zurich-south: "Yes, you have traffic, two o'clock, now at 360. (In reality the Boeing was at 10 o'clock)
-19 Sec: Boeing: Sound of audible indicator.
-13.3 Sec: Boeing: "611, TCAS-descent"
-11 Sec: Tu-154 cockpit area mike: "B... d', where is it?”
-9.5 Sec: Tu-154 TCAS: "Increase climb!, increase climb!"
-5.3 Sec: Tu-154 cockpit area mike: "Climb!, it says" (The same member of the crew who first drew the attention of the Captain to the indication of the TCAS again brings it to his attention.)
-3.8 Sec: Boeing cockpit area mike: <Expletive>
-1.8 Sec: Tu-154 cockpit area mike: <Expletive>
0 Sec: Collision