Supersedes Telephone No. 17.

Also known as the Post Office telephone for Granular Transmitter 'C' (GTC).

Wooden wall telephone used in CBS areas and long distance party lines.

Uses a Deckert transmitter but may be converted to a transmitter inset - Transmitter No. 3.

The GPO Stores Rate Book 1928 advises that this telephone was used on Wallboards, telephone, with fire-signal, M.F.B.

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Last revised: January 03, 2016