Energis Installs Coherent EC-7000 Digital Echo Cancellers

Strategic Insights -

Energis, a UK communications and information services company, has recently installed the leading-edge EC-7000 digital echo cancellers from Coherent Communications Systems as part of its network expansion. The high-performance units were selected after extensive trials for implementation on Energis' international traffic to Canada. The installation represents the initial stage of Energis' network expansion, with the company building a 4,100 km SDH network using fibre optic cable primarily along the National Grid's electricity transmission infrastructure.

Key Takeaways:

  • Energis has installed the Coherent EC-7000 digital echo cancellers, representing the initial stage of its network expansion, with the goal of providing excellent call quality.
  • The EC-7000 units were selected after extensive trials for implementation on Energis' international traffic to Canada.
  • The fibre optic cable was installed by wrapping it around the existing earthwire or replacing the existing earthwire with a new composite earthwire containing fibre pairs, which provides increased security against vandalism or fire.
  • The Coherent EC-7000 represents a state-of-the-art echo cancellation platform, based on Coherent's own 5th-generation VLSI ASIC, providing fast convergence time with exceptional stability.
  • The EC-7000 provides optimised performance for facsimile transmission and is available with Coherent's range of application-specific software.
  • Coherent Communications Systems is a worldwide leader in state-of-the-art voice enhancement technology, with products used globally by major commercial telecommunications companies and network operators.

Statistics:

  • 4,100 km: The length of Energis' SDH network built using fibre optic cable.
  • 4,000: The number of fibre pairs installed in the new composite earthwire.
  • 5th-generation: The generation of Coherent's VLSI ASIC used in the EC-7000 echo cancellation platform, providing fast convergence time with exceptional stability.
  • 1995: The year in which Energis installed the Coherent EC-7000 digital echo cancellers.

Sources:

  • "Energis Installs Coherent EC-7000 Digital Echo Cancellers." Business Wire, September 4, 1995.
  • Coherent Communications Systems Corporation. "Coherent at Telecom 95, Geneva."