BELLSET No. 31
used by the BPO on Direct Exchange Lines with Telephone No's 156LB,
196LB or 246 in LB
exchange areas. Also used on CBS
Exchanges No's 1, 2 &
Came complete with twin bell gongs, 1000 ohm ringer, Capacitor and a Coil Induction No. 21.
A Bakelite cover was provided.
Internal view of the Bellset
ATM Bellset No. 31 diagram
Last revised: November 20, 2011