The VersaLAN is a serial protocol converter used to connect an EDC terminal with a serial (RS232) interface to a RS485 network. In essence, what the VersaLAN does is to convert RS232 data communications standards to the RS485 standard, thus allowing for enhanced transferring of transaction data over enhanced distances and/or data rates. The benefits of doing this are obvious as RS232 specification allows for data transmission at relatively slow data rates (up to 20K bits/second) and short distances (up to 50Ft. @ the maximum data rate) requiring 8 or 10 core wiring and does not perform well when connected in a long chain. On the other hand, the RS485 protocol meets the requirements for a multi-point communications network, and the standard specifies up to 32 terminals on a single (2-wire) bus. With the introduction of "automatic" repeaters and high-impedance drivers this "limitation" can be extended to hundreds (or even thousands) of nodes on a payment network. RS485 extends the common mode range for both drivers and receivers in the "tri-state" mode and with power off. Also, RS485 drivers are able to withstand "data collisions" (bus contention) problems and bus fault conditions. This makes the RS485 protocol optimal for creating an enlarged network of linked EDC terminals.

The VersaLAN further provides for greater savings on cabling costs. Conventional telephone cables can be used as the medium of connection rather than the more expensive 8-core network cables, saving plenty in cabling costs while providing high reliability and stable connectivity. With the VersaLAN, a highly reliable and speedy network of terminals can be deployed throughout a large physical area to enhance the payment infrastructure.