BATTERY INTERCOMMUNICATION TELEPHONES
"REPLY-AND-CALL" SUB-STATION AUTOMATIC
Pattern No. B610
Comprises Hand Combination Transmitter and Receiver, Cord, Automatic Cradle-switch (with automatic device for changing over the call line), Induction Coil, Buzzer, and Wall Rosette and Cord.
This instrument is the Table Set form of Patterns Nos. B600 and B605, and comprises all the advantages mentioned with such instruments.
NOTE. Any one of Patterns Nos. B600, B605, and B610 can be used in connection with an ordinary Battery Intercommunication Set as Central Station, but the Sub-Stations cannot be switched through to one another.