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Xorcom Hardware Echo Canceller

Xorcom XR0124

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Xorcom Hardware Echo Canceller

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Xorcom has designed a hardware echo canceller (HWEC) module for its award-winning Astribank 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. 

By reducing the load on the server’s CPU, the number of simultaneous calls that are supported on the telephony system is increased significantly. The echo tail size of the hardware echo cancellation module has been set to 128 taps, and load tests show that the same number of simultaneous calls are achieved as when the software echo cancellation is disabled completely.

Each separate device (Astribank / XR2000 / XR3000 / XE2000 / XE3000) requires a single Echo Canceller card. The hardware echo canceller option includes 32 voice channels and support for up to a total of 144 channels. All ports/channels in the chassis need to be licensed for the module to function. Additional channels are licensed in bundles based on the telephony interface type:

Additional PRI Port (P/N LC0020): License(s) necessary for 2nd, 3rd, 4th activated PRI port(s) in the chassis

Additional FXS Module (P/N LC0021): License support additional FXS module(s) in PRI or BRI configuration. Note: Hardware Echo Cancellation cannot be applied to FXO modules in a single chassis configuration including a PRI or BRI module. In this case, the FXO module should be installed in a separate (Astribank) chassis.

Additional BRI Channels (P/N LC0022): License(s) support(s) up to 16 voice channels, in two channel bundles

*The echo cancellation hardware is an integral part of the Astribank devices with 6 or more PRI ports and does not need to be ordered separately.   

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