GEC No. 2300 Series
Switchboards in this series are available in two sizes having capacity for 50 and 100 lines respectively. Woodwork is of polished walnut and the larger type is similar in general appearance and design to the small type illustrated.
Separate line and "ring-off" indicators are employed. mounted in strips above the jack field. The cord circuits are of the usual type incorporating combined ringing and listening keys. Space is provided for the fitting of up to ten transfer line jacks, in addition to the specified number of extension line jacks, but no transfer line equipment is supplied unless specially ordered. Access can easily he obtained to the apparatus, wiring and line terminals by removing the lift-out rear panel of the hoard.
The operator's telephone circuit comprises an induction coil and a telephone set, consisting of a breastplate transmitter and head receiver complete with cords and plug. Alternatively, an operator's hand combination telephone can be supplied if specially ordered.
Ringing current is supplied from a powerful 4-magnet hand generator, a key being provided to enable the operator to ring back over any calling line if necessary.
An alarm bell, operated by contacts on the drop indicators, is fitted inside the switchboard and can be disconnected by a key when desired. Any of the magneto telephones of the bridging or bridging sure-ring types listed in this catalogue are suitable for use as extension instruments with switchboards of the No. 2300 Series.
Cat. No. 2350 is shown pictured above.
Taken from the GEC Telephones and Switchboards (Manual and Automatic) Catalogue No. 11 (Circa 1936)
Last revised: July 30, 2012