I know we are now used to with the mobiles but A Company Name “Mastertel” opened a Museum of phones which was used in the offices. Telephones are well represented in the museum, they are really rare, most manufactured in 1876 – 1970 year. its just a collection of rare Russian telephone companies. lets take a look of really interesting museum.
PBX desktop phone, model ZBSA November 1910, Siemens & Halske (Siemens), Germany
Desktop phone in 1878, Siemens, Germany . Wooden device used simultaneously as a microphone and the listener. When the words of one interviewee, the second was to remain silent. Needed a high voice discipline,used in the German post office.
The telephone system of 1895 MB, LM Ericsson (Lars Magnus Ericsson), Sweden. The device with magneto ,company LM Ericsson in common called
Desktop phone in 1890, Bell, USA. Telephone Bell
Desktop phone in 1948, ATEA, Antwerp.Its a Telephone for general use.