Abstract: A signal band width limiter is provided in a telecommunication path that includes a leased unbundled subscriber line. The limiter may be a programmable active filter such as a digital signal processor in which filter characteristics are set under control of a controller at a central office. The controller may acquire the necessary subscriber level information via a data network from a data base at a remote location. Band pass ranges are set to frequencies corresponding to subscribed services. As the subscribed service is changed, replacement by the appropriate passband filter readily can be made. The telecommunication path can be monitored to determine whether an upgrade of service is required. Parameters of subscriber line leased from an ILEC by a CLEC can be tested at the ILEC premises.

Abstract: A public switched telephone network (PSTN) provides communication of digital data from a data provider or LAN to one or more of a plurality of subscriber premises. Asymmetrical digital subscriber line interface units operating at variable rates and in variable modes (ADSL/AVRs) over a local loop offer one-way video-on-demand and other services and carry the necessary signalling between the subscribers and information providers. In an asymmetric mode, the interface units frequency multiplex digital 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. Other modes are supported which permit selective bi-directional and reversible communications as well.

Abstract: A signal band width limiter is provided in a telecommunication path that includes a leased unbundled subscriber line. The limiter may be a programmable active filter such as a digital signal processor in which filter characteristics are set under control of a controller at a central office. The controller may acquire the necessary subscriber level information via a data network from a data base at a remote location. Band pass ranges are set to frequencies corresponding to subscribed services. As the subscribed service is changed, replacement by the appropriate passband filter readily can be made. The telecommunication path can be monitored to determine whether an upgrade of service is required. Parameters of subscriber line leased from an ILEC by a CLEC can be tested at the ILEC premises.

Abstract: A public switched telephone network (PSTN) provides communication of digital data from a data provider or LAN to one or more of a plurality of subscriber premises. Asymmetrical digital subscriber line interface units operating at variable rates and in variable modes (ADSL/AVRs) over a local loop offer one-way video-on-demand and other services and carry the necessary signalling between the subscribers and information providers. In an asymmetric mode, the interface units frequency multiplex digital 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. Other modes are supported which permit selective bi-directional and reversible communications as well.

Abstract: A signal band width limiter is provided in a telecommunication path that includes a leased unbundled subscriber line. The limiter may be a low pass frequency filter having a band pass range set to the frequencies corresponding to subscribed services. If only POTS service is offered, the filter has a passband range for passing only telephone service signals in a POTS analog frequency range. For ISDN service, the filter has a passband range for passing only telephone service signals within a frequency range prescribed for ISDN. For higher speed data services, such as HDSL and ADSL, filters with appropriate pass bands, up to complete pass through, are provided in the subscriber communication path. As the subscribed service is changed, replacement by the appropriate passband filter readily can be made.

Abstract: A public switched telephone network (PSTN) provides communication of digital data from a data provider or LAN to one or more of a plurality of subscriber premises. Asymmetrical digital subscriber line interface units operating at variable rates and in variable modes (ADSL/AVRs) over a local loop offer one-way video-on-demand and other services and carry the necessary signalling between the subscribers and information providers. In an asymmetric mode, the interface units frequency multiplex digital 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. Other modes are supported which permit selective bi-directional and reversible communications as well.