Abstract: A public switched telephone network (PSTN) provides digital video signals from a video information provider or digital service bureau to one or more of a plurality of subscriber premises. Administration of orders from subscribers is carried out by a video gateway and file servers at the central office. Asymmetrical digital subscriber line interface (ADSL) units over a local loop carry the necessary signalling between the subscribers and information providers. The interface units frequency multiplex digital video information with voice information to the subscriber and support transmission of a reverse control channel from the subscriber to the central office for transmission back to the information provider. Several enhancements and special features are disclosed.

Abstract: A public telephone network includes enhanced capabilities with a distributed imaging system. The imaging system interfaces with end users through appropriate bridges, routers and gateways to provide the user with a virtual local area network. Automatic number information (ANI) is used to automatically configure the system as required by the user. A central processing system performs text and image manipulation and transmission functions using the switched network facilities. Routing tables stored by the imaging system support automatic image and document routing functions.