Rhino has partnered with Texas Instruments and Adaptive Digital Technologies to help create the lowest priced analog PCI card echo cancellation solution available for Asterisk. All Rhino PCI analog cards offer standard features such as carrier-class ITU G.168 compliant echo cancellation with 1,024 taps, 128ms tail, complete with a fast converging non-linear processor with automatic comfort noise generation.

The non-modular line consists of three models: the R4FXO-EC, the R24FXS-EC, and the R24FXO-EC. The R4FXO-EC features four FXO channels in a non-modular design, with four female RJ11 jacks available at the PCI card bracket. The R24FXS-EC and R24FXO-EC both feature a single RJ21 female connector at the PCI card bracket, with a Velcro strap to secure the mating RJ21 cable to the connector.

The modular line consists of two models: the R8FXX-EC and the R24FXX-EC. The R8FXX-EC features four female RJ11 jacks available at the PCI card bracket, with two lines appearing, the first on the inner and the second on the outer pair of each jack. The R24FXX-EC features a single RJ21 female connector at the PCI card bracket, with a Velcro strap to secure the mating RJ21 cable to the connector. Dual FXS and FXO modules are user upgradeable, and can be snapped into place with a two-point interconnection mechanical mounting method that utilizes enclosed, non-pin type connectors for reliable electrical connection.

All Rhino plug-in PCI analog telephony cards feature a unique on-board control element that eliminates PCI bus bit banging, which provides more host processor time for the main Asterisk PBX application. The addition of hardware-based echo cancellation on-board means that even more host processor time is available for other host processor-based duties.

Source: pbxeq