TELEPHONE No. 34
Originally called the "Telephone, Micro, 3 Contact Key", it was later renamed as the Telephone No. 34 circa 1911.

The Telephone No. 34 is a handset with a three contact key which is used for speaking and listening.

The three contact key is a changeover key that is normally made with contact and on operation changes over to make with two contacts.

The Receiver resistance is 150ohms.

The handset includes a Cord No. 410 and was used on portable telephones and the Telephone No. 42.

Wiring diagram - N134.

Found in the 1906, 1910, 1911, 1912, 1913, 1914 and 1915 Rate Books.

 

 
 
BACK Home page BT/GPO Telephones Search the Site Glossary of Telecom Terminology Quick Find All Telephone Systems
Last revised: October 26, 2025

FM