Sonata III's user-friendly interface runs on a PC under Microsoft Windows®. The EchoScan™ element management system is available as an option for administering large-scale installations. Economical hardware and software upgrades and customization are available at minimum cost and minimal disruption to the network.  The system decreases power consumption to as little as 0.12 watts/channel and incorporates two fully redundant, load-sharing power supplies. Sonata III is fully G.168 (2000) compliant and can be configured for installation on the A-interface in GSM networks. Sonata III provides all the features required for seamless, distortion-free transmission at a customer's fingertips.
 

    Performance 

• Hybrid echo tail length capacity: Up to 96 ms standard with an 8-second adaptable flat delay window on 2 E1s per quad circuit pack 
•  Echo return loss enhancement: >35 dB with NLP disabled with G.168 composite source signal; >65 dB with NLP enabled 
• Acoustic echo control: Better than 18 dB of non-linear acoustic echo elimination 
• Residual echo control: Soft non-linear processing via gradual loss insertion for minimizing clipping of speech 
• Comfort noise: Spectrum noise matching 
•  Audio transparency: Prevents clipping of background music and music-on-hold during speech pauses

   E1 HIGH-DENSITY ECHO
CANCELLATION AND VOICE ENHANCEMENT
SYSTEM WITH STUDIO SOUND
 

• Convergence speed: Industry's fastest; revolutionary non-NLMS algorithm employing Continuously Adaptive Gain, accommodating >25 dB ERLE in less than 1 second with G.168 composite source signal (G.168 requires just 16 dB of ERLE in 1 second) 
• Convergence time: Less than 50 ms on white noise for combined ERL and ERLE of 35 dB 
• Convergence stability: Most stable performance in the industry; does not diverge under low ERL and wide dispersion hybrids; no divergence during double-talk 
• Studio Sound Noise reduction: Up to 20 dB, provisionable 
•  Studio Sound Noise compensation: Up to 12 dB (dynamic gain) 
• Automatic gain control: Bi-directional; either positive or negative smooth adjustment for optimal listening 
• Dynamic Speech Restoration: New patent-pending algorithm designed to reverse coding/decoding voice degradation 
• Standards compliance: Full compliance with ITU/T G.164, G.165, G.168 (2000), G.169; ETSI 101 504; TIA/EIA IS-839 
• Tandem-Free Operation (or vocoder bypass): Ready for implementation if required 
• EC signal processing delay: Transmit channel <0.6 ms; receive channel <0.25 ms 
• Timing and alarm processing: Software-selectable — repeater or terminal mode