Abstract: The diagnostic test uses the effects of closed loop power control in order to measure the return loss of a receive antenna in a CDMA radio system. A standard CDMA call is established under closed loop power control by a mobile in a test unit. Using a switch matrix, the call is directed on the incident path of a receiving antenna. After a stabilization interval, the mobile phone in the test unit is queried for its transmit power level. The established call is then directed on the reflected path of the receiving antenna. After a stabilization interval, the mobile phone is again queried for its transmit power level. The difference between the previous incident transmit power level and the new increased transmit power level is the return loss of the antenna.

Abstract: A local positioning system (LPS) uses the radio propagation parameters in a CDMA forward link or TDMA reverse link to establish a mobile station's position. The mobile station receives pilot channel signals from at least three distinct base stations and records the PN chip offset of the pilot channel signals. The LPS time difference of arrival triangulation approach requires no additional signal detection capabilities. Base stations send out pilot channel signals that arrive at a mobile station with a particular phase and at least a predetermined minimum strength. The mobile station reports back the “visible” pilot channel signals, their phases and signal strength to the LPS which uses a location non-linear system, expressed as a set of cost functions, to estimate the mobile location. The LPS can also solve the 9-1-1 mobile location problem for wireless CDMA systems by determining the position of a person in distress that has a digital cellular phone.

Abstract: A fiber-optic WDM ring carries communication traffic among a plurality of nodes, each node associated with respective subscriber premises. The WDM ring includes an optical add-drop module (OADM) at each node for adding and dropping signals associated with that node. The WDM ring also includes active terminal equipment at each node for conditioning incoming and outgoing data and for converting between the optical and electrical domains. The OADM at each of at least some nodes, to be referred to as enhanced nodes, is situated at a site physically separated from the powered terminal equipment, and is coupled to the powered terminal equipment via an optical medium. At each enhanced node, traffic not destined for that node is routed through no more than one enclosure on subscriber premises that requires a connection. If there is such enclosure, it contains the OADM.

Abstract: In accordance with the invention, an optical data transmission system is provided with an integrated dual dispersion compensator that can compensate both chromatic dispersion and PMD. The compensator comprises in essence, a substrate-supported planar waveguide structure having a planar transmission waveguide coupled to an integrated chromatic dispersion compensator and to an integrated PMD compensator. The chromatic dispersion compensator is advantageously a length of waveguide coupled to an all-pass filter. The PMD compensator is advantageously a polarization separator for separating the two polarization components between two waveguide subpaths and at least one delay element coupled to at least one subpath to compensate propagation delays. The subpath beams can then be combined to an optical signal compensated for both chromatic dispersion and PMD. In a preferred embodiment the chromatic dispersion compensator and the delay element are both tunable.

Abstract: The present invention relates to a new feature for e-mail services which provides a telephone call alert to a particular e-mail user when their e-mail server, web page e-mail server, or other e-mail receiving server receives new e-mail addressed to them. One or more designated telephone number (or numbers) are automatically called by an auto dialer at the e-mail server in response to the receipt of particularly identified high priority e-mail senders (e.g., from clients, from family, etc.). The particular designated telephone number(s) to call for a particular user are configured in a priority alert profile for that particular user, as are the possibility to limit the activation of the telephone call alert system to electronic messages received only from a select list of senders, and/or after a predetermined number of electronic messages have been received.

Abstract: Emergency calls are serviced from a data communications device (104) via a wide area data network (102), for example, the Internet. A user of the communications device registers for emergency call service on an emergency call site that is associated with the wide area data network (200). An operator is associated with the emergency call site for handling emergency calls. When required, the user initiates an emergency call from the communications device (202). Then, the user provides information about the emergency to the operator through a real-time online chat (210). The operator performs a database query to determine emergency numbers for responding to the emergency based on the information received from the user (212). After selecting the appropriate emergency number, the operator connects the call to a local authority who is associated with the selected emergency number via the public telephone network (216).

Abstract: A method and apparatus are provided for displaying network information to a user connected to a network or sub-network manager of a hierarchical telecommunications network by providing a map on a visual display unit showing network elements and connections between network elements. A plurality of views may be selected which include not only a conventional physical view, in which all network elements and the optical fibre links between them are shown, but also one or more views showing connections at respective virtual container levels (e.g. VC-4, VC-12). In these views only the multiplexers are shown and virtual containers at the respective level are shown as lines joining the multiplexers which are their termination points.

Abstract: An optically controlled switch includes first and second electrodes, a channel extending between the electrodes, and a light source positioned to illuminate the channel. The light source produces a wavelength capable of changing the material's conductivity. The channel includes a photosensitive organic material and is configured to operate as a light controlled switch.

Abstract: A method and system for delivering data over a communication network which ensures-proper payment of royalties while preserving free access to data for purposes such as browsing or research. An exemplary method in accordance with the present invention includes the steps of providing a partially-degraded version of the data over the network, without payment of a royalty fee, to a customer at a user terminal connected to the network; and providing a higher quality version of the data to the customer over the network if the customer is entitled to receive the higher quality version. The determination as to whether the customer is so entitled may be made by, for example, determining if a royalty fee payment has been received. The partially-degraded version of the data is substantially recognizable when displayed, printed, played, run or otherwise utilized by the customer at the user terminal, and may be generated by, for example, deleting or encrypting a portion of the undegraded data.

Abstract: A system and method for managing a communications network establishes an initial polling interval for a corresponding network element. The network management system detects whether the network element provides at least one status message during a group of sequential polls. Each poll within the group is preferably separated by the initial polling interval. The network management system adjusts the initial polling interval to a subsequent polling interval for the network element based on the detection of the status message to adaptively meet the communications traffic requirements.

Abstract: A system and method provide ASR talkoff suppression in a prompt-and collect voice transaction system in which a prompt signal is sent and an input signal is received. A comparison is made of a characteristic of the prompt signal and the input signal. Processing of the input signal to reduce the likelihood of an ASR response thereto is performed if the result of the comparison satisfies a predetermined criterion.

Abstract: A time division multiple access communication system is disclosed, in which down link data are transmitted over a data channel in repeated time frames each containing a plurality of time slots. Down link set up information is transmitted over a control channel to indicate from which time slot a user terminal should extract data. Each frame on the data channel includes a user packet flag to indicate whether or not each time slot in the frame contains data. Each user terminal is responsive to the set up information and to the user packet flags to extract data from its assigned time slot in those frames which the slot is indicated to contain data.

Abstract: An adaptive filter suitable for network echo cancellation and other applications contains a coefficient vector update device for feeding coefficient vector updates to a finite impulse response filter in accordance with fast converging algorithms. A double talk detector is included for causing filter adaptation to cease in the presence of double talk in the system being echo cancelled. The coefficient vector update device utilizes a proportional affine projection algorithm to provide fast convergence of the filter system and improved performance over other filter devices utilizing different fast converging algorithms.

Abstract: The present invention is directed to an analog, oligomer-based method for determining a mathematical result of carrying out an operation of matrix algebra on input data. The method comprises representing at least one m-component vector V=&Sgr;iViei by a set of single-stranded oligomers Ei and Ei which are in 1:1 correspondence with the basis vectors ei, i=1, 2, . . . , m in an abstract m-dimensional vector space. A composition comprising at least one set of oligomers Ei and Ei representing the components of a vector is obtained as input date and is subjected to at least one physical or chemical treatment having an effect on the oligomers that is an analog representation of an operation of matrix algebra. The method can be used to represent the operations of a neural network; for example, to produce a content-addressable memory, or a multilayer perceptron.

Abstract: A telephone switch-integrated modem pool and broadband access concentrator provide improved data network access through a PSTN local loop. Rather than simply cascading data as TDM traffic through the PSTN, plural switch-integrated modems, a broadband access concentrator, and a broadband pipe are used to route data traffic between local loop subscribers and one or more data network service providers. Advantageously, point-to-point connections are maintained between subscriber and service provider equipment in order to enable continued use of high level subscriber-provider protocol service negotiation (such as PAP/CHAP, NCP and the like). LCP (link layer) management and translation between the asynchronous subscriber-modem pool link and the synchronous provider-modem pool link are handled transparently by the broadband access concentrator.

Abstract: A protocol and system for securely communicating a financial transaction between a customer and a merchant and a distributed computer network employing the protocol or system. A central authority having a central authority private key Ksca assigns a customer account (“CACCT”) to the customer and a merchant account (“MACCT”) to the merchant. The customer has a customer public key Kpc; the merchant has a merchant public key Km.

Abstract: A position locator enables the detection of an originating location of a 911 caller under various RF propagation positions. Through the use of a transceiver and global positioning unit in a portable position locator, even if only one base station receiving the 911 call can be detected, the origin of the 911 call can still be located. Utilizing information from the position locator and at least one base station, an estimated distance between the position locator and the 911 caller, as well as an estimated distance between the at least one base station and the 911 caller, can be determined utilizing TOA or TDOA techniques to enable the location of the caller. An emergency vehicle carrying the position locator can constantly monitor and move toward the location of the 911 caller calling from a wireless mobile unit.

Abstract: The present invention provides a method and communication system for sending a data response from a called phone to a calling phone in response to a call request from the calling phone. The calling phone sends a call request to the called phone. The call request is a request to establish a communication between the called phone and the calling phone on a call path. If the called phone decides not to answer the call request, the called phone can send a data message to the calling phone. If the calling phone is data-capable, the data message is sent directly to the calling phone. If the calling phone is not data-capable, the data message is sent to a server that converts the data message to a voice message and sends the voice message to the calling phone. The calling phone can send a message back to the called phone in response to the data message sent from the called phone.

Abstract: This invention relates to arrangements for eliminating loop-around trunks for operational calls. Such trunks are used when a single switch performs two distinct functions, such as local service and operator assistant service. In order to simplify software, the software for each of these functions is designed separately; in the prior art, if both functions are needed, two separate connections are established and are joined by the use of a loop-around trunk. In accordance with Applicant's invention, the loop-around trunk is eliminated by initially establishing a connection from a real time-slot to a virtual time-slot for the first function and from a virtual time-slot to a real time-slot for the second function; the real time-slots for receiving the call and for transmitting the call to an inter-office trunk are then connected in the switch without requiring the use of a separate loop-around trunk.

Abstract: An address interworking system and method for an internetwork that includes a first network using first network addressing communicating via one or more internetworking gateways with a second network using second network addressing. The gateways register one or more first network addresses in the second network as first network address-encapsulated or- mapped second network addresses. Reachability information regarding the first network-encapsulated or -mapped second network addresses is then disseminated through the second network. When a communication request containing a first network destination address is received from the first network at one of the gateways, the receiving gateway performs encapsulation or mapping of the first network destination address into a first network-encapsulated or -mapped second network destination address.