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Categories (x) > Industrial > Modems, CSU/DSUs, Muxes (x)

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  • Manual... 
  • Modem 3600, Standalone, AC Powered
    Installation and User Guide (Apr-02)
 

Product Data Sheets (pdf)...Industrial Modem 288


Product Data Sheets (pdf)...Modem 34336



Product Data Sheets (pdf)...Network Termination Unit-1 (NTU-1)

  • Manual... 
  • Modem 3600 Rackmount Card
    Installation and User Guide (Feb-04)
 

Black Box Explains...DDS vs. T1.

DDS (Digital Data Service) is an AT&T® service that transmits data digitally over dedicated leased lines. DDS lines use four wires, and support speeds up to 56 kbps; however, DDS... more/see it nowis actually a 64-kbps circuit with 8 kbps being used for signaling. You can also get 64-kbps (ClearChannel™) service. Since the transmission is digital, no modems are needed. Dedicated digital lines are ideal for point-to-point links in wide-area networks.

T1 is a dedicated transmission line operating at 1.544 Mbps. It’s comprised of 24 DSOs, each supporting speeds of 64 kbps. The user sends data at N x 56 or N x 64 over T1 circuits. T1 operates over twisted-pair cable and is suitable for voice, data, and image transmissions on long-distance networks. collapse


Product Data Sheets (pdf)...Asynchronous Local RS-232 Muxes


Product Data Sheets (pdf)...Smart 64K CSU/DSUs

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