Abstract: The invention concerns a method for the administration of a subscriber SIM card 3 inserted in the main smartcard reader of a mobile telephone of the type including a second smartcard reader, using an additional administrator smartcard temporarily inserted in this second reader. The administrator smartcard includes at least one specific loader (Ch) applet and one or more files (f1-fn) corresponding to the applets (A1-An) which can be loaded in the SIM card under the control of the loader (Ch). The administrator card complies with the Sim Toolkit standard. The method can also be used to carry out the deletion, modification and various operations on data or applets (A1-An) present in the SIM card: display, determination of the memory space, etc. The invention also concerns an embedded system, more particularly a smartcard, for the implementation of the method.

Abstract: A facsimile apparatus, to which an external telephone enables to be connected through a line, has a line I/F section that transfers and receives signal through a network, a voltage detection section that is provided in a semiconductor DAA and detects a line voltage of the line, an adjustment section that adjusts a line voltage during establishment of a connection through the line so as to be within a predetermined voltage, and an external telephone monitor section that acquires a value of the line voltage detected by the voltage detection section at regular time intervals and monitors a use state of the external telephone based on the acquired values of the line voltage.

Abstract: An input method using standard numeric keypad which complies with CCITT standards and comprises a plurality of CCITT standard keys is disclosed. Each CCITT standard key has a corresponding CCITT key value. The method comprises the steps of: reassigning a first CCITT key value with an actuating key value of a first function; checking if the first CCITT key value is input, if “YES” then actuating the first function to reassign every CCITT key value with a new input key value of predetermined function; and, checking if any CCITT key value is input, if “YES” then performing the predetermined function corresponding to that input CCITT key value based on the first function. Therefore, all functions of the input method can be operated by using merely the CCITT standard keys without the need for other non-standard function keys.

Abstract: Methods and apparatus for coupling outgoing analog audio signals to a subscriber line are described. One method includes the step of receiving the outgoing audio signal. The outgoing audio signal is coupled to the subscriber line through a plurality of transistors coupled in a common base configuration. In one embodiment, linefeed driver control signals for controlling battery feed to the subscriber line are received on the same signal lines as the outgoing audio signal. A subscriber line interface circuit apparatus includes a first circuit for coupling a received outgoing audio signal to a subscriber line. The first circuit couples the received outgoing audio signal to the subscriber line through a common base isolation stage. In various embodiments, the common base isolation stage comprises a plurality of bipolar junction transistors coupled in a common base configuration or a plurality of field effect transistors coupled in a common gate configuration.

Abstract: The invention concerns a digital signal distributing installation comprising a first coupler to be connected to an ADSL line input and to an electric power distribution line, an ADSL modem with a first and a second port, and a second coupler to be connected to the first port of the modem and to the electric power distribution line. Said installation is enhanced by adding thereto an auxiliary electric power distribution line, and a filtering circuit interposed between the electric power distribution line and the auxiliary electric power distribution line.

Abstract: A telephone terminal includes a receiving detector which detects a signal level of a receiving voice signal incoming from the main device, a transmitting detector which detects a signal level of a transmitting voice signal to transmit it to the main device, an adjustment device to adjust the transmitting voice signal and a controller which obtains a control value capable of switching a communication state from a receiving state to a transmitting state to make an acoustic echo to be added to the transmitting voice signal be minimum, based on each signal level of the receiving voice signal and signal level of the transmitting voice signal, and controls the adjustment device based on the control value.

Abstract: The present invention is an echo canceller for sparse channels in an echo channel. The echo channel receives a far-end input and a near-end input. An enable generator asserts a sparse update enable in response to detecting at least one of the double talk condition and an impulse response change. A main weight updater transfers shadow weights of the shadow filter to N sets of sparse weights in N sparse filters of the main filter according to the sparse update enable. A sparse main filter filters the far-end input non-adaptively to generate a main output. A long shadow filter filters the far-end input adaptively to generate a shadow output and to estimate delays of peaks of the sparse weights in the main filter.

Abstract: A system for controlling transceivers based on a location of the transceivers, as indicated by a location indicator, helps to reduce crosstalk interference in signals transmitted from central offices. The system utilizes a location indicator and logic. The location indicator is communicatively coupled to each of a plurality of transceivers and is indicative of whether the plurality of transceivers are located at an intermediate terminal or a central office. The logic is configured to control a physical layer of each of the transceivers based on the location indicator.

Abstract: A canceller circuit includes a subtractor, receiving an analog received signal and a replica signal of noise (e.g.

Abstract: A system for generating, delivering and distributing electrical power to network elements over a data communication network infrastructure within a building, campus or enterprise. Consolidating power distribution and data communications over a single network simplifies and reduces the cost of network element installation and provides a means of supplying uninterrupted or backup power to critical network devices in the event of a power failure. The invention includes power/data combiners that combine a data communication signal with a low frequency power signal. The combined signal is transported over the LAN infrastructure where a power/data splitter extracts the data signal and the power signal and generates two separate outputs. The power over LAN system of the present invention operates with high bandwidth data communication networks, i.e., 10 Mbps, 100 Mbps, 1000 Mbps.

Abstract: Tone generating sequence data are sequentially read out in accordance with a performance sequence, and tone generation control parameters are decoded from the read-out sequence data. The decoded tone generation control parameters are sequentially written into a control register. Tone signals are generated on the basis of the tone generation control parameters written in the control register. Pattern register stores pattern data representative of a time series of driven states to be taken by a plurality of light emitting elements. On the basis of the tone generation control parameters written in the control register, the pattern data stored in the pattern register are sequentially output to illuminate the light emitting elements. Particular pattern data may be stored in association with a particular caller so that, when an incoming call has been received from the particular caller, the pattern data specific to the particular caller are read out to illuminate the light emitting elements.

Abstract: An interference cancellation method for use in a communications system in which a plurality of communication paths are arranged to transmit and receive respective analogue signals comprises effecting an initialization phase to calculate, for each path, the interference effects of the signals transmitted on that path on the signals received on each of the other paths, and storing for each a plurality of weighting factors representing the interference on each of the other paths respectively. During transmission, said weighting factors are used to generate from the transmitted signal on one of the said paths and to apply said cancellation signals to signals received on said other paths, thereby to cancel the interference effect of said transmitted signals.

Abstract: A communication coupling includes a communication port, which communicates with a network component. The communication port includes first and second paths of communication with the network component. A switch may be coupled with the communication port. The switch includes a first position in which the communication port receives a first communication signal from the network component using the first path of communication and transmits a second communication signal to the network component using the second path of communication. The switch may also include a second position in which the first communication port receives the first communication signal from the network component using the second communication path and transmits the second communication signal to the network component using the first communication path.

Abstract: A method and apparatus for isolating transmit and receive signals in a communication system utilizing a common channel for both incoming and outgoing signals. In one embodiment a tuned hybrid or isolation circuit is provided with a high-frequency pre-emphasis response. The tuned hybrid rejects the transmit signal from the receive port and is capable of isolating the low power receive signal. One or more filters within the hybrid provide the desired levels of attenuation and frequency specific processing. Outgoing transmit signals encounter minimal attenuation thereby reducing overall transmit power requirements while receive signals are isolated. The tuned hybrid may be configured with an all-pass network consisting of an attenuator and a delay element. Both of these devices or elements maybe tuned to tailor the frequency response to the channel.

Abstract: An anomaly detection system comprises an echo canceler and anomaly detection logic. The echo canceler has a plurality of taps respectively associated with a plurality of tap coefficients. The anomaly detection logic is configured to determine a difference between a new tap coefficient associated with one of the taps and a previous tap coefficient associated with the one tap. The anomaly detection logic is configured to perform a comparison between the difference and a threshold and to detect an anomaly along a telecommunication line based on the comparison.

Abstract: An on-chip reduced complexity modulation noise estimation mechanism for performing nonlinear signal processing to analyze modulation noise to determine whether a semiconductor device under test complies with the performance criteria set by specifications or a standard corresponding thereto. When used in a two-point transmitter modulation architecture, the mechanism relies on the fact that the noise statistics at the output of the transmitter can be determined by observing the phase error output of the phase detector within the phase locked loop. In the digital embodiment of the mechanism, the phase error signal is compared to a configurable threshold value to generate an exception event. If the number of exception events exceeds a configurable max_fail value after comparisons of a configurable number of phase error samples, the test fails. A pass/fail signal is output reflecting the result of the test.

Abstract: Systems and methods are described herein for changing the frequency response of a filter, such as a hybrid circuit. One or more tunable components are adjustable to provide the hybrid circuit with a frequency response corresponding to the characteristics of an associated communications network, such as a digital subscriber link.

Abstract: Disclosed is a method and a device for coupling to a packet switched network for receiving data packets containing time ordered information such as voice. In accordance with a method for operating a Voice over IP capable device that is coupled to a packet network, and a device that operates in accordance with the method, there is disclosed receiving and buffering data packets that comprise voice information; decoding the voice information to obtain voice samples; and buffering the decoded voice samples prior to generating a voice play-out signal, where the decoded voice samples are time scaled as a function of packet network conditions to adjust the Buffering Delay and to enable changing the voice play-out rate to provide a substantially continuous output voice signal regardless of the variation in the rate at which the data packets are received.

Abstract: A converted telephone plug inserted into the first jack of a traditional, local telephony network breaks the normal connection to a public switched telephony network (PSTN) and reroutes signals to special telephony equipment for further connection to a modem access network. The advantages are that local analog telephones, can be used as interfaces also against the modem network and that installation becomes easy.

Abstract: A telephone is equipped to enable a user to enter a dialing prefix, an append indicator, and a dialing request to quickly place a call to a callee from a location where calling the callee requires the dialing prefix. In response, the telephone places the call to the callee using the dialing prefix and a last placed call number. In an alternate embodiment, a previous dialed number may be used instead. In yet other embodiments, the telephone detects for a dialing error, using voice recognition technology, and either re-places the call or facilitates re-placement of the call in a corrected manner. In one embodiment, the telephone is a wireless mobile phone; in another, the telephone is a wired or cordless telephone handset.