Answer:

bizetsignal

AnswerCrossword Clue
BIZETSIGNALComposer's communication?
BIZETSIGNALComposer's cue?
BIZETSIGNALTelephone sound
BIZETSIGNALOpening note to "Carmen"?
BIZETSIGNALCommand to a French composer at an intersection?