Maximize
|
Brand Xorcom SKU XR0124 | £166.70 exc. VAT £200.04 inc. VAT Select currency
Quantity  |
Availability: In Stock
Reduced load on server CPU and enhanced voice quality provided on hardware module; alternative to software echo cancellation solution typically used in Asterisk systems
P/N = XR0124
Xorcom has designed a hardware echo canceller 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. 
Xorcom''s echo cancellation module provides a high level of echo cancellation and voice enhancement while reducing load on the CPU.
Echo Cancellation Module Increases Number of Simultaneous Calls Supported
Comparison Between Software and Hardware Based Echo Cancellation
Prior to development of the hardware echo cancellation module, Xorcom recommended that customers use the OSLEC (Open Source Line Echo Canceller) provided as part of the Asterisk operating system. Central Processing Units (CPUs) 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.
Load Test Results Tell the Story
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.
Ordering the Hardware Echo Cancellation Option
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 Analog Module (P/N LC0021): License(s) support(s) additional analog (FXO or FXS) module(s) in PRI or BRI chassis configuration
Additional BRI Channels (P/N LC0022): License(s) support(s) up to 16 voice channels, in two channel bundles
* The low-end XR1000 does not support the hardware echo cancellation module.
** 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.
|
