The VoIP Modem Server (VMS) is a software-based Remote Access Server (RAS) solution designed to eliminate the need for analog PSTN lines in outbound dialing environments. Built upon a telco-grade architecture with distributed processing techniques, the platform relies entirely on Voice over IP (VoIP) technologies and soft modems, serving as a direct replacement for legacy hardware systems.
VMS is provided as a turnkey solution for commercial and federal government applications, scaling from a single channel up to hundreds of soft modems. It operates using standard VoIP protocols, requiring G.711 μ-law or A-law provider support, and necessitates specific echo cancellation configurations for connections running at V.32 speeds or higher.