CHM Revolution

Photographer

Richards, Mark

Dimensions

overall: 9 in x 19 in x 10 in

Manufacturer

Premisys Communications

Credit Line

Gift of John Bodo and Unix Surplus

Copyright Owner

© Mark Richards

Object ID

500003112

This was the interface between the telephone company’s leased T1 line coming into a business, and the internal serial communication lines to the customer’s equipment. Each T-1 circuit transmitted about 1.5 million bits per second.