CSI designs and manufactures Fiberlink® fiber optic transmission systems for video, audio and data,
Scan Do® scan converters,
Deuce® video scalers and more!
Communications Specialties, Inc. (CSI) offers a comprehensive line of point-to-point and point-to-multipoint fiber optic transmission systems for video, audio and data.
All products within the Fiberlink® line deliver state-of-the-art performance at unparalleled pricing.
Be sure to check out our Fiber Optic Test Equipment!

The Fiberlink® 5100 Series transmits 10/100/1000 Base-T Ethernet over one or two single mode or multimode fiber optic cables. The Fiberlink® 5100 supports both full and half duplex modes and is ideal for IT, broadcast and pro a/v...
[learn more]
The Fiberlink® 5018 Universal Data Transceiver digitally transmits RS-232/422/485 data over multimode or single mode fiber at 850 or 1310 nm. It transmits and receives all standard data-related signals in accordance with EIA specifications....
[learn more]
The Fiberlink® 5012 Universal Data Transceiver digitally transmits RS-232/422/485 data over multimode or single mode fiber at 850 or 1310 nm. It transmits and receives all standard data-related signals in accordance with EIA specifications....
[learn more]
The Fiberlink® 5002 transmits RS-232 data over standard multimode fiber at 850 nm for simplex, duplex, asynchronous, point-to-point and drop-and-repeat operation. The micro transceiver occupies no more space than a DB-25 connector and...
[learn more]