E1 or Fractional E1 Access Unit

The FCD-2 E1 or Fractional E1 access unit is a Rate and Interface Converter for Fractional E1 services accepting data at rates from 56 kbps to 1.984 Mbps. The user selects the data rate – any multiple of 56 or 64 kbps (up to 1984 kbps). The FCD-2 E1 or fractional E1 access unit can be equipped with or without a Line Termination Unit (LTU). The E1 or fractional E1 access unit supports virtually all major E1 protocols and interfaces.

• Low cost E1/Fractional E1 access unit

• Built-in line driver extends service reach to two kilometers

• Can serve as a rate or interface converter

The FCD-2 E1 or Fractional E1 access unit is a rate and interface converter for E1 or fractional E1 services, accepting unframed data at rates up to 1,984 kbps, at any multiple of 56 kbps or 64 kbps. Data is placed into an E1 frame using only the required number of timeslots. Synchronous data channel connection is provided over the public E1 network without the need for a multiplexer. Where fractional E1 service is available, the FCD-2 E1 or Fractional E1 access unit reduces billing costs to only the bandwidth used.

 

The FCD-2 E1 or Fractional E1 access unit meets all ITU requirements of G.703, G.704 and G.732. It supports both two and 16 frames per multiframe. CRC-4 can be supported selectively.

 

The unit can be ordered with or without an LTU (line termination unit). The integral LTU ensures an operating range of up to 1.6 km (1 mile), which also allows the FCD-2 E1 or Fractional E1 access unit to be used as a short range modem. Three user interface options are available: V.36, V.35 and X.21.

 

Setup and control is provided from the front panel using control keys and a menu-driven LCD or via a terminal or PC connected to the supervisory port. Extensive diagnostic capabilities include local and remote loopbacks at various points, as well as a built-in BER tester for rapid fault isolation.