Xorcom is now shipping a hardware echo canceller module for its award-winning AstribankT telephony interfaces and Asterisk-based IP-PBX appliances. The module provides a high level of echo cancellation and voice enhancement while reducing load on the CPU as compared to OSLEC, the software-based echo cancellation solution provided in the standard Asterisk framework.

New Echo Cancellation Module Increases Number of Simultaneous Calls Supported
Until now, Xorcom recommended that their customers use the OSLEC provided as part of the Asterisk operating system. Central Processing Units are so powerful these days that normally the OSLEC has no impact on the IP-PBX operation. However, if the telephony system is used in high density call environments, and/or where additional applications are involved, such as call centers that need call recording functionality, offloading the echo cancellation processing to a separate hardware module makes sense.

"By reducing the load on the server's CPU, the number of simultaneous calls that are supported on the telephony system is increased significantly," states Izzy Gal, VP Innovation at Xorcom. "We've set the echo tail size to 128 taps and our published load tests show that we achieve the same number of simultaneous calls as when we disable the software echo cancellation completely."