The AS5200 is the first in a series of universal access servers to deliver hybrid asynchronous serial and ISDN line service to accommodate both mobile users and high-bandwidth dedicated telecommuters. By terminating both analog modem and ISDN calls on the same chassis from the same trunk line, the AS5200 enables ISPs and enterprise network managers to meet traditional analog dial access needs, while supporting the growing demand for high-speed ISDN access. The AS5200 contains the functionality of channel service units (CSUs), channel banks, communication servers, switches, routers, ISDN capabilities, and 48 or 60 modems tightly integrated in one standalone chassis, making it ideal for mixed-media environments.