The Premisys' IMACS suite of products offers a way for service providers to supply fast, reliable access to new and emerging services and technologies available on the public network. IMACS can be used to provide Plain Old Telephone Services (POTS), analog private lines, and Digital Data Services (DDS), carriers can also provision Frame Relay, ATM, and ISDN or a combination of traditional and advanced services. Its patented bus structure simultaneously supports circuit, packet, and cell switching in a single platform. In addition the product sustains a powerful array of built-in network diagnostic and troubleshooting tools.