Carrier-Class Echo Cancellation for Asterisk
Source: snapvoip.blogspot.com
Digium, the Asterisk® Company, announced at Astricon, a new Hardware module and a Software-based High Performance Echo Cancellation Solution for carrier-class voice networks to improve audio quality and reduce VoIP infrastructure costs.
For Asterisk users that connect to the PSTN, the most common type of echo is hybrid echo - the echo introduced by the impedance mismatch between 2-wire and 4-wire telephone circuits. The echo manifests as a distorted and delayed reflection of the users voice while in conversation with an external party through the PSTN.
The new Digium High Performance Echo Cancellation (HPEC) solutions eliminate the need for the tuning and training sometimes required to control echo conditions in Asterisk-based voice systems. The HPEC is G.168 compliant and "toll-quality" as determined by AT&T’s Voice Quality Assessment Labs using a stringent series of subjective and standardized, objective tests. The Digium HPEC outperformed AT&T’s benchmark lab echo cancellers in all testing categories.
"As Asterisk continues its rapid rate of deployment on a wide range of telephone equipment from vendors around the world, Digium is committed to delivering our customers the absolute best quality possible," said Mark Spencer, CTO of Digium. "Digium’s new high performance echo cancellation solutions once again set the industry standard for open source, carrier-class voice networks."
Asterisk offers a strategic, highly cost-effective approach to voice transport over IP, TDM, switched and Ethernet architectures. Digium’s offerings include VoIP, conferencing, voicemail, legacy PBX, IVR, auto attendant, media servers and gateways, and application servers and gateways.
Pricing and Availability
Digium’s HPEC hardware module solution retails for $235 USD for up to 32 channels. Digium’s HPEC software is available at no cost to in-warranty Digium analog interface customers, and available for $10 USD per channel to non-Digium customers. Availability is immediate.
