531 subset

[southernphoneman]

pictured below is a 531 subset,is this sidetone or antisidetone?

[poplar1]

pictured below is a 531 subset,is this sidetone or antisidetone?

Neither. It's an extension ringer only.

[southernphoneman]

pictured below is a 531 subset,is this sidetone or antisidetone?

Neither. It's an extension ringer only.

I just won this of of ebay not realizing it was nt a subset, what kind of phone would it go to and how would you hook it up? thank you.

[G-Man]

Simply connect it anywhere across the telephone line where you want an extension ringer or near a telephone that does not have a ringer.

(C) Extension Ringers-Loud Ringing Bells

  2.05  The 53l-type subscriber set, is an extension ringer set
        for interior use. The set has the same general appear-
        ance as the 684-type bell box but is considerably smaller. The
        base is metal and the cover is made of a black thermoplastic
         material. The 531A-type set contains a ringer, condenser and
         a terminal strip with five screw terminals and the 531 C-type
         set contains a vacuum tube, relay, varistor and two terminal
          strips. The171A backboard is designed for use with these sets.

[G-Man]

Connections-

[southernphoneman]

thank you G Man for your response.