SIEMENS BROTHERS No. 101

Siemens Brothers Neophone No. 101

A wall type Bakelite telephone fitted with a dial but without bell ringer or buzzer. A Bellset or Bell would have been mounted externally.

This telephone was made for the Relay Automatic Telephone Company (R.A.T. or RAT Co.) and would have been used on their smaller PAX systems with DC ringing.

The front cover is fitted to the Bellset cover which has the base plate fixed to it. There is also a wall bracket which is shown fitted to the base plate.

The hook switch is different to the standard Neophone as it consists of a make and a changeover contact set, with only the changeover contact in use.

The Bellset consisted of just a terminal block. There were no bells or ringer and the sound holes are blanked off.

The circuit diagram shows a transformer but no induction coil. The diagram also shows an external DC buzzer connected to the 'A' leg of the line and is disconnected when the handset is lifted.