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Electrospace Autovon Keypad
Electospace Autovon phone keypad closeup. Another version was manufactured with a membrane keypad (entire face was flush - same as black buttons above keypad).
Red buttons on dial pad bump routine voice telephone traffic based on call urgency -- if another circuit to the destination is unavailable.
FO = Flash Override
F = Flash
I = Immediate
P = Priority
System is no longer in service, and sets have been showing up on the surplus market for many years.
Electrospace sets are digital, and can't be plugged into a analog home line (they require their own proprietary digital switch). Most older first generation Western Electric Autovon sets are analog, and can be used as "home" phones without modification.
LCD status screen at top.
A detailed technical overview of the AUTOVON system may be found in "Bell Laboratories Record," April 1968.
Go to "Original Size" of 3072 x 2304 for more detail.
Electrospace Autovon Keypad
Electospace Autovon phone keypad closeup. Another version was manufactured with a membrane keypad (entire face was flush - same as black buttons above keypad).
Red buttons on dial pad bump routine voice telephone traffic based on call urgency -- if another circuit to the destination is unavailable.
FO = Flash Override
F = Flash
I = Immediate
P = Priority
System is no longer in service, and sets have been showing up on the surplus market for many years.
Electrospace sets are digital, and can't be plugged into a analog home line (they require their own proprietary digital switch). Most older first generation Western Electric Autovon sets are analog, and can be used as "home" phones without modification.
LCD status screen at top.
A detailed technical overview of the AUTOVON system may be found in "Bell Laboratories Record," April 1968.
Go to "Original Size" of 3072 x 2304 for more detail.