🚀 go-pugleaf

First:  My application for this is _definitely_ commercial.   But I'm
not asking for the information, I just want to know where to _get_ the
information.

I would like to use a cellular phone control head (the "handset" part)
with some non-cellular equipment.  In order to accomplish this, I need
to know how to communicate with the control head.  There are (8) wires
involved.

I imagine that two of them are power and ground; two are MIC audio
(balanced); two are speaker audio (balanced) and the last two are
clock/data.  I've heard a rumor that there is/was a standard ("AMPS"?)
which defines the pinouts, character codes, etc. to use.

I need to do the obvious:  display data on the screen (I understand
this will vary somehat from manufacturer to manufacturer), read the
keypad, send and receive audio.

I started by buying a control head from a local cellular dealer.  Now
I find that the manufacturer of that unit is reluctant to tell me how
to do what I need to do.  (I know, "Phone first!")

I need to know: (A) How to obtain a (legit!) copy of the AMPS standard
document, (B) Pinouts / protocol for communicating with a "standard"
control head, or (C) a cellular equipment manufacturer interested in
selling a few thousand control heads and willing to tell me how to use
them.

Pointers to helpful information greatly appreciated!

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Gordon S. Hlavenka            cgordon@vpnet.chi.il.us
 Official Supporter of the Barry/Walsh ticket in '92