Lucent Technologies Inc.

At&t Bell Laboratories

American Telephone & Telegraph Co., At&t Bell Laboratories

Warren A Montgomery

Ajay K Jain

Wu-Hon F Leung

Alec Brusilovsky

Vijay Kumar Gurbani

Kumar Venkata Vemuri

Wayne E Hyatt

John Alvan Voelker

Terris L Hansen

Chin-Tau A Lea

Tsun-Chieh Chiang

Janet Beeler Douglas

A method of audio stream monitoring on behalf of a calling party by filtering an audio stream sent to an audio-capable device. The audio stream is received from an audio stream source and compared to at least one audio stream portion. If an audio stream portion is identified for removal from the audio stream, it is removed from the audio stream resulting in a filtered audio stream.

Method for audio stream monitoring on behalf of a calling party

The instant presence system authoritatively determines the present communication location of a subscriber, who may be at any of a number of possible locations. When the subscriber changes their location, they can use a subscriber communication device that is operational at their new location to update their point of presence on the telephone communication network. The instant presence system enables the communication network to complete a communication connection from a calling party to the called party with certainty. The calling party therefore can reach the called party with certainty by simply dialing a single listed directory number associated with the called party, relying on the instant presence system to complete the call connection to the called party, regardless of the present location of the called party.

Instant presence system for a guaranteed call connection

In an Internet protocol (IP)-based multimedia system having a voice over packet infrastructure call handling involves the execution of a call processing program that controls state transitions in a finite state machine termed the &ldquo;call model.&rdquo; These transitions are representative of the events that occur during the lifetime of the call and result in the execution of pre-defined actions. In order to provide high level Intelligent Network (IN) capabilities to IP end-point subscribers, a call model layer implements the IN call model, but is closely integrated with the IP-based, multimedia call model that runs within the base platform. The integration employs a precisely defined state-level map between states in the IN call model and the corresponding states in the base call model. The IN call model layer is thus able to support access to IN components to permit the existing base of IN services to be easily accessed and to permit the base layer to support client-level interaction and event handling. A call state information is shared between the two layers to enable them to operate in synchrony. State transitions made by one call model finite state machine (FSM) are thus reflected in the other. Services within the IP space may still be accessed by the base call model layer, allowing for access to both IP-based and IN-based services. The IN call model layer can be reused across various base platforms with little, if any, modification making it essentially portable.

Reuse of services between different domains using state machine mapping techniques

A software system written in a nonprocedural language for controlling a telecommunication system in which an internal software signal is generated when a state is exited and another internal signal is generated when a state is entered to control common operations for the state transitions. For each state, a group of instructions written in the nonprocedural language is autonomously executed in response to the exit signal to perform common exit operations for that particular state. A second group of instruction is autonomously executed in response to the entrance signal to perform common entrance operations for that particular state. Various services performed by the telecommunication system are written in scripts of groups of instructions called triples. Each triple has an event definition defining the signal that the triple will respond to and a state definition defining the state in which the system must be in before the triple can respond. Programmer productivity is increased because when new features are added, the common operations previously performed on exiting and entering a state will continue to be performed plus the programmer can add new functions to be performed upon the entrance or exiting from a state without detailed knowledge of the program implementing the previous services.

State control for a real-time system utilizing a nonprocedural language

A communication method and packet switching network in which self-routing packets are communicated through the network by intra-communication of the packets within stages of the network as well as inter-communication of the packets among stages. The stages each having a plurality of pairs of switch nodes with each pair having an intra-node link between the pair of nodes. Each of the switch nodes comprises input controllers and output controllers. The input controller of a node is responsive to the receipt of a packet for interrogating the address field of the packet to determine the destination of the packet. The input control on the basis of the destination determination commmunicates the packet towards the destination via either an inter-stage link or an intra-node link on the basis of availability of the links and an internal control circuit. If a packet is transmitted via an intra-node link to the paired node the latter then transmits the packet via its output controller to the next stage via an inter-stage link. If both the intra-node link and the inter-stage link are available, the internal control circuit then determines which link should be utilized in communicating the packet. The internal destination circuit performs this designating function on the basis of a random number generator.

Self-routing packet switching network with intrastage packet

A host computer system allowing the utilization of designated characters as flow control characters and also the utilization of the same designated characters as ordinary data. During the transfer of data from the host computer to the terminal, the operating system controlling the host computer first disables the use of the designated characters as flow control characters, starts the transfer of information to the terminal, performs operations to determine whether or not the terminal is approaching the point where it can no longer receive data, and enables the utilization of the designated characters as flow control characters when the terminal reaches the latter point. The enabling of the designated characters for use as flow control characters allows the terminal to signal to the computer when it has received too much data and control the flow of data to the terminal using the designated flow control characters. When the operating system is preparing to receive large amounts of data from the terminal, it disables the flow control utilization of the designated characters so that these characters can be transmitted from the terminal to the computer as data. The operating system is of the multiprogram type and the enabling and disabling of the flow control is accomplished by an application program making requests to an I/O handler program that is directly controlling the terminal via operating system calls.

Flow control between a data terminal and a host computer system

A communication method and packet switching system in which packets comprising logical addresses and voice/data information are communicated through the system by packet switching networks which are interconnected by high-speed digital trunks with each of the latter being directly terminated on both ends by trunk controllers. During initial call setup of a particular call, central processors associated with each network in the desired route store the necessary logical to physical address information in the controllers which perform all logical to physical address translations on packets of the call. Each network comprises stages of switching nodes which are responsive to the physical address associated with a packet by a controller to communicate this packet to a designated subsequent node. The nodes provide for variable packet buffering, packet address rotation techniques, and intranode and internode signaling protocols. Each packet has a field which is automatically updated by the controllers for accumulating the total time delay incurred by the packet in progressing through the networks. Each processor has the capability of doing fault detection and isolation on the associated network, trunks, and controllers by the transmission of a single test packet. The testing is done solely in response to the test packet and no preconditioning of controllers or networks is necessary.

Growing community of inventors

DeKalb, IL, United States of America

Warren A Montgomery