Telephony – Page 21

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Plastic device with ten button system, internal bell, integrated handset and coil cord.

Pieza de plástico y metal que sirve para transmitir la voz en un teléfono.

A piece of granulated carbon that is used to transmit the voice of a telephone.

Metallic portable device and headset with cut-off switch

Transmission and reception element made of plastic.

Transmission and reception element made of plastic.

Plastic device with rotary dial, integrated handset and system to operate with a punched card. Coil cord.

Tabletop device with button system and mounted display. Handset built into the body of the telephone, plastic cable.

Plastic and metal part used to transmit the voice in a telephone.

Plastic and metal part used to transmit the voice in a telephone.