Digium AEX804E

8 port modular analog PCI-Express x1 3.3V card with 4 Trunk interfaces and HW Echo Can

Digium AEX800 is a large 8-port PCI Express board.

The AEX800 board occupies one PCI Express slot and is equipped with 8 RJ-11 connectors. The presence of 8 ports allows you to easily connect to the seats in the system unit with installed TDM400B and TDM410 boards. In addition, the availability of primary RJ-11 connectors eliminates the need for special cables for connecting lines to the cross-panel and other additional connectors, which combines reliability in whole.

The AEX800 skin port is configured and functions independently from other FXO mode or FXS interface, depending on the installation of modules. AEX800 allows almost any configuration with FXO and FXS ports: the base board has 2 banks, each has 4 analog ports. In one bank you can install either a 4-port module S400M (4 FXS) or X400M (4 FXO), or two single-port modules S110M (1 FXS) or X100M (1 FXO). It is reasonable to install 4-port modules to achieve maximum capacity. At the same time, the support for single-port modules allows owners of Asterisk boards based on TDM400P and TDM410 to easily switch to the PCI Express bus, purchasing only the AEX800 base board without reinstalling modules.

The Digium AEX800 board is supported by VPMADT032, which makes it possible to increase the clarity of the sound without additional calculations on the server. As an alternative option for echo cancellation, you can use the High Performance Echo Cancellation (HPEC) software algorithm from Digium. The HPEC algorithm is compatible with the G.168 specification and reduces echo in the range of 16 to 128 ms.

Deciphering the meaning of board models based on AEX800: AEX8PQR, where P means the number of FXS ports, Q means the number of FXO ports. The suffix 'B' indicates that the product is a set of boards and modules, and 'E' means that this set includes the VPMADT032 echo damping module. Boards with 4 new ports organized by S110M or X100M modules are designated with a special rank: instead of 0, the name of the board contains the letter S, which means those whose port banks are occupied by single-port modules.