News Release

Data World

Valiant introduces its latest
E1 and T1 Voice Quality Enhancement (VQE)
and Echo Canceller solution for GSM Networks

October 10, 2005

Valiant's introduces its latest VCL-EC, E1 (and T1) Voice Quality Enhancement (VQE) and echo canceller solution for GSM networks. Applications also include for CDMA, wireless, DCME, and satellite communication applications.

Key Features and Benefits

  • Valiant offers the industry most compact 8, E1 Echo Cancellers and Voice Quality Enhancement (VQE) solution. E1 (or T1) echo cancellers in a 1U (44mm) high chassis – industry’s smallest footprint.
  • Ideally suited for GSM Networks to eliminate "back ground noise" to enable GSM Networks to function at Half-Rate (HR) thereby doubling spectrum usage in GSM networks.
  • 128 ms. bi-direction echo cancellation with echo-tail displacement from 0ms. to 512ms.
  • Programmable echo-tail displacement from 0ms. to 512 ms.
  • Echo-tail displacement allows user to program a delay off-set on return path and user can cancel near-end and far-end echo from single installation.
  • Cancels near-end and far-end echo from single installation
  • Echo Cancellation on each channel is 128ms. bi-directional.
  • Compliant to ITU-T G.164, G.165, G.168 (2000/2002) requirement for echo cancellation.
  • User programmable signaling options - R2 CAS, PRI ISDN (30B+D), SS7
  • Electrical echo-cancellation resulting from network delays and delays arising due to complex voice compression algorithms in hybrid PSTN and long distance networks.
  • Acoustic echo-cancellation required for mobile networks for cancelling echo-tails that originate from cellular hand-sets poorly designed acoustic feedback.
  • Background Noise Reduction and Auto Voice Level Control (VQE, Voice Quality Enhancement features) required for reducing background noise from calls originating from crowded public places or other noisy environments and maintaining a uniform voice level in a network. Improves voice quality.
  • User programmable data channel(s)
  • Remote access through telnet
  • 8 E1 (or T1) echo cancellers in a 1U (44mm.) high chassis - industry's smallest footprint
  • Applications include wireline, wireless, satellite, international / long distance gateways, DCME and radio communication networks
  • Usable in telecommunications systems worldwide.

Valiant Voice Quality Enhancement (VQE) and echo canceller solution is a fully integrated echo canceller that cancels echo up to 128ms. with tail displacement feature. Inputs and Outputs are 120 Ohms, RJ45 E1s.

Applications incude
  • GSM / cellular networks
  • Wireless: Digital Cordless, PCS, and Base Stations and Access Controllers.
  • Digital Circuit Multiplication Equipment (DCME) : Satellite Communications and Multiplexers.
  • PCS, cellular, mobile, and digital cordless wireless systems.
  • PBX and central office systems.
  • Datacomm: Voice Over Frame Relay, Voice Over ATM, and Voice Over Internet.
  • Voice over ATM, Frame Relay or packet switching systems that provide a separate channel to carry V.32/V.32bis/V.34 modem and fax transmissions.
  • Central Office and PBX: Network Trunks, Echo Canceller Pool, Common Equipment and Audio Conferencing Bridges

  • Voice over datacomm including voice over Internet (VoIP), voice over ATM (VTOA), and voice over Frame Relay (VoFR).

For additional information, go to:

For additional information please contact:
E-mail: Contact Us

Sales Department:
Valiant Communications Limited
Address: 71/1, Shivaji Marg,
New Delhi - 110015, India
Phone: +91-11-41055601, 41055602, 41055603
Fax: +91-11-41055604, 25434300
Web Site: http://www.valiantcom.com
 
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