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Kellogg company logo as used from the 1920s to the 1950s. The Kellogg Switchboard and Supply Company was an American manufacturer of telecommunication equipment. Anticipating the expiration of the earliest, fundamental Bell System patents, Milo G. Kellogg, an electrical engineer, founded the company in 1897 in Chicago to produce telephone exchange equipment and telephone apparatus.
A low-voltage switchboard A modern electric switchboard. An electric switchboard is a piece of equipment that distributes electric power from one or more sources of supply to several smaller load circuits. It is an assembly of one or more panels, each of which contains switching devices for the protection and control of circuits fed from the ...
ADTRAN/BlueSocket; Aerohive Networks - acquired by Extreme Networks [1]; Alaxala Networks; Alcatel-Lucent Enterprise; Allied Telesis; Alvarion; Aruba - acquired by HPE; Asus; Avaya; AVM; Belkin
Anixter International Inc. is a company based in Glenview, Illinois, United States and founded in 1957.The company supplies goods and services for communications, security, networking, audio-visual, and industrial control applications.
ITT Inc., formerly ITT Corporation, [2] is an American worldwide manufacturing company based in Stamford, Connecticut.The company produces specialty components for the aerospace, transportation, energy and industrial markets.
PBX switchboard, 1975. A telephone switchboard is a device used to connect circuits of telephones to establish telephone calls between users or other switchboards. The switchboard is an essential component of a manual telephone exchange, and is operated by switchboard operators who use electrical cords or switches to establish the connections.
This is a list of companies in the United States by state where their headquarters is located: Alabama. Alaska. Arizona. Arkansas. California. Colorado. Connecticut ...
List of the mainly electro mechanical switching systems from Hasler AG Bern, which were used in public telephone network in Switzerland for many decades. Hasler AG finally merged into Ascom in 1987. HS 25 (modified from the Ericsson OL-100 system with double relays and 25-point selector (Ericsson license), mainly used for small villages and ...