This book explores the many varieties and applications of ISDN, from residential use for telecommuting and Internet access, through a variety of business uses, including: voice, internet access, LAN connectivity, e-mail, downloading software updates, back-up for a leased line, client-server applications, and tele-maintenance, as well as voice services such as network services like call forwarding, call deflection and call diversion. The author outlines the applications for ISDN, the interface requirements, the functions and features, and the protocols for installation, configuration, and troubleshooting. ; This book explores the many varieties and applications of ISDN, from residential use for telecommuting and Internet access, through a variety of business uses, including voice, Internet access, LAN connectivity, e-mail, downloading software updates, back-up for a leased line, client-server applications, and tele-maintenance, as well as voice services such as network services like call forwarding, call deflection and call diversion.