How Does A 1940's wall/jukebox, Handle Multiple Selections

[startgroove]

I couldn't get the full question in the title.  The full question is:  On a two or three wire, or wireless, selection system from the 1940's, what happens when two, or more, wall boxes are sending pulses to the receiver/stepper at the same time?  Further, did all the makers sort this problem the same way?  Cheers, Russie

[Ron Rich]

Hi Russie,
Youz gets the wrong selections !! Only one that did anything about this problem was AMi (mid 50's, I think ?)-- They added a "wait circuit"--if a wall box was in use, and someone went to use another, the red light would be lit and the keys would just lock down, till the other wall box let go of the line. Ron Rich

[startgroove]

Thank you very much.  I suspected as much, but never experienced it myself, though I was an often time user of wall boxes, and a collector of them, and a serviceman for them.  Cheers, Russie