 |
 |
|
|
The Telephone No. 250, shown to the right, is a portable linesman's telephone of the local battery variety. It has an integral battery, ringing generator and a dial. The telephone can be used on auto lines.
The Telephone No. 250A had a socket that accepted a headset.
The generator handle is stowed by means of the brass clip inside the lid.
The case was made of soft plastic, normally found in a red/brown colour, but some telephones
were of a harder plastic and were a mottled brown colour.
Circuit diagram N350.
Click here for the circuit diagram - Web users - CD users
| BACK | Home page | BT/GPO Telephones | A - Z Index | Glossary of Telecom Terminology | Quick Find | All Telephone Systems |
Last revised: 28 February, 2005
FM