The D-Link Dvx-8020 8-port FXO module is a low-cost, high-quality VoIP module that supports the FXS standards for analog voice communications. It supports eight phone lines, and is a perfect solution for small to medium-sized businesses that need a simple and cost-effective way to connect to the PSTN.

The DVX-8020 module supports both analog and digital communications, as well as the ability to have up to eight lines connected and used simultaneously. All of this functionality is achieved through a simple user interface and the included software.

There are two main types of FXO modules: the standalone module and the network module. The standalone module connects directly to the PSTN and is typically used for small to medium-sized businesses. The network module connects to other network devices, allowing multiple modules to be connected together and to the PSTN. This type of module is typically used for larger companies that need the ability to connect to the PSTN via multiple devices.

The DVX-8020 module supports both analog and digital communications, as well as the ability to have up to eight lines connected and used simultaneously. All of this functionality is achieved through a simple user interface and the included software.