News

Orion introduces its
T1 Echo Canceller solutions

November 30, 2001

Orion introduces its VCL-EC128, T1 Voice Echo Canceller solutions for wireless, cellular, digital circuit multiplication (DCME), satellite communications and datacomm applications.

Orion echo canceller is a fully integrated 24 channel echo canceller that cancels echo up to 128ms. The VCL-EC128 offers disable tone detection. Each of the 24 channels cancels echoes up to 128ms and meets ITU-T G.165 and ITU-T G.168 requirements for echo cancellation. Inputs and Outputs are 100 Ohms, RJ45 T1s.

Orion echo canceller highlights include, providing voice echo cancellation of up to 128ms. The solution meets ITU-T G.164 and G.165 disable tone detection requirements and conforms to ITU-T G.168. The VCL-EC128 also eliminates long echo tails.

Application include:

• Wireless: Digital Cordless, PCS, and Cellular 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).

Key Features and Benefits

• 128ms echo cancellation.
• ITU-T G.164 / G.165 Disable Tone detection supported on all audio paths
• Non-Linear Processor with adaptive suppression threshold and comfort noise insertion
• Programmable Double-Talk detection threshold
• Narrow-Band signal detection
• Selectable / A-Law ITU-T G.711; / A-Law Sign Magnitude; linear 2's complement
• Ideally suited to handle most echo situations.
• Assures operability with V.32/V.32bis/V.34 modem and fax transmissions. Conforms to standards assuring proper public network operation and facilitating system integration.
• Removes residual echo and minimizes switching effects thereby providing high perceived speech quality.
• Ensure echo canceller maintains excellent performance at all times in the presence of non-echo voice signals.
• Useful for trunks that have very low echo-returns loss.
• Ensure echo canceller maintains excellent performance at all times in presence of tones or signals including DTMF tones.

• Usable in telecommunications systems worldwide. Able to interface in most systems where linear samples are available.

For additional information, go to:

• VCL-EC128 T1Echo Canceller

Technical specifications are subject to change without notice.
All brand names and trademarks are the property of their respective owners.

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