ipak chorak. izem' ti standarde;))
Ovako u wikipediji pise
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--- Commercial and general aviation civil airplane headset plugs are similar, but with a difference. A standard 1/4-inch monaural plug, type PJ-055, is used for headphones, paired with special tip-ring-sleeve,
0.206 inch diameter plug, type PJ-068, for the microphone. The extra connection in the microphone plug is used by an optional push-to-talk switch.
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Dakle, koliko sam skuzio - meni treba konverter/adapter iz U-174/U (ili vec kojeg) u PJ-055 (M642/4-1) & PJ-068 (M642/5-1).
Idem dalje citat - mozda cu ga sam napravit?;)