Abstract: The present invention affords a predefined class of authorized users of the PSTN (public switched telephone network) access to extended telephone services through public communication networks external to the PSTN, the latter networks including the web and Internet. Authorized users in the predefined class can receive the extended services at residences, offices, and locations remote from both residences and offices. Authorized users can activate respective extended services through the external networks, and can do so without having to communicate with telephone company representatives. Resource management intelligence of the PSTN is adapted to link to the external networks for communicating with and delivering extended telephone services to the authorized users. Extended telephone services include variations of presently standard telephone services such as call waiting, caller ID, call forwarding facsimile image transmittal, voice mail, etc.

Abstract: The present method provides a technique for real-time monitoring of charges for using a communication network service, thereby enabling a user to continuously know the charges incurred during each usage. The user also is able to define a charge limit prior to using the service and the usage terminates automatically when the accumulated charge reaches that limit. The present method is particularly adapted to monitoring charges associated with a telephone conference call.

Abstract: The disclosure allows for creation of special web-page repositories within subsystems of the present PSTN (public switched telephone network) that conform to present architectures for advanced intelligent network (AIN) constructs in telephony. Such repositories would be formed to receive facsimile (fax) telephone transmissions, convert them to HTML (Hypertext Markup Language) web page format, store the converted results and render the latter available for viewing simultaneously--under control of PSTN call management intelligence--to multiple users of the Internet and World Wide Web subject to authorization of would be viewers by the sending party.

Abstract: A pulse code modulation (PCM) unit is connected to a bus in a computer system. Also, connected to the bus is a processor and memory. The PCM unit is connected to transmit and receive telephone lines. The PCM unit reads uncompressed PCM data from the memory over the bus and compresses the PCM data for transmission over the telephone line in a cycle steal operation, wherein the bus is not being used by the processor. The PCM receives compressed PCM data from the receive telephone line, decompresses it, and writes the decompressed PCM data to the memory in a cycle steal operation. In addition, selectivity of either .mu.-Law or A-Law conversion, selectivity of even bit inversion for A-Law conversion, and selectivity between the compressed/decompressed PCM data or raw data is provided on a per channel basis. Selectable linear gain is also provided.

Abstract: Disclosed are call processing methods which are performed by a network terminator located at a subscriber's premises. The network terminator is coupled to a digital network and a communication device at the subscriber's premises and can perform call waiting, caller identification, call conferencing without intervention from a telco's switching system that requires an additional charge to the subscriber for these services. In addition, the network terminator can perform a method which allows two digital communication devices coupled to one S-bus to share a communication session. In another embodiment, up to a six way conference call can be established with an analog telephone coupled to an ISDN network via the network terminator of the present invention.

Abstract: Disclosed are call processing methods which are performed by a network terminator located at a subscriber's premise. The network terminator is coupled to a digital network and a communication device at the subscriber's premise and can perform call waiting, caller identification, call conferencing without intervention from a telco's switching system that requires an additional charge to the subscriber for these services. In addition, the network terminator can perform a method which allows two digital communication devices coupled to one S-bus to share a communication session. In another embodiment, up to a six way conference call can be established with an analog telephone coupled to an ISDN network via the network terminator of the present invention.

Abstract: In an communication system including a computer system comprising a digital signal processing adapter for performing a-set of tasks, and a E-1 port for providing and receiving time division multiplexed (TDM) signals in accordance with a first inter-system communication protocol, such as the E-1 or T-1 protocols, a communication subsystem, for coupling to the IP system. The communication subsystem includes an E-1 link for coupling to the first I/O port, and for providing and receiving TDM signals in accordance with the E-1 or T-1 protocols. The subsystem further includes a digital signal processor adapter, coupled to the second I/O port, for enhancing processing capability of the digital signal processing resource; and a third I/O port, coupled to the digital signal processor circuit, for providing and receiving signals in accordance with the first or a second inter-system communication protocol.

Abstract: Disclosed are call processing methods which are performed by a network terminator located at a subscriber's premise. The network terminator is coupled to a digital network and a communication device at the subscriber's premise and can perform call waiting, caller identification, call conferencing without intervention from a telco's switching system that requires an additional charge to the subscriber for these services. In addition, the network terminator can perform a method which allows two digital communication devices coupled to one S-bus to share a communication session. In another embodiment, up to a six way conference call can be established with an analog telephone coupled to an ISDN network via the network terminator of the present invention.

Abstract: A digital signal processing system includes a first and second memory coupled to first and second register banks respectively. The system further includes first and second multipliers coupled to the first and second register banks for producing first and second product outputs respectively. The system also includes an arithmetic logic unit having first, second and third inputs and an output. The first input is coupled to the first product output and the second and third inputs are selectively coupled to either of the second product output and the first and second register means. The arithmetic logic unit output is coupled to the first and second register banks for accumulating the sample values in the first and second register banks. The system further includes Instruction control for storing a plurality of instruction op codes and controlling the system to compute the sample values by performing simplex operations during each cycle of a plurality of operating cycles of a digital signal processing procedure.