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Telephone Archive

Phones|People|Timeline|Videos|PDFs|Images|Cards|Signs| Glossary Play About

Jubilee Telephone

1977

Trimphone

1964

GPO Deltaphone

1979

General Post Office/BT · Source/via: Science Museum Group (website)

GPO Deltaphone

About This Phone

The Deltaphone was a later Trimphone variant.

Related PDFs

Talking Points

The Story of the Telephone

The Story of the Telephone

GPO Green Pages

GPO Green Pages

Telephone Companion

Telephone Companion

Telephones for Businesses

Telephones for Businesses

Telex With Teleprinter

Telex With Teleprinter

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