Abstract: A method is disclosed for transmitting system management requests to computer systems along a network path using a network control protocol, such as RSVP. For example, an originating node may send a single system management request along a path to a destination node using a network control protocol. Each computer system along the network path may analyze the network control protocol message to determine whether the message contains a system management request. If a system management request is found in the message, the computer system may perform the system management function identified in the request, and respond to it.

Abstract: In an automatic gain control type demodulation apparatus, an orthogonal demodulation circuit receives an analog input signal to generate a first I-signal and a second Q-signal orthogonal to each other. An analog/digital converter circuit performs an analog/digital conversion operation upon the first I-signal and the first Q-signal to generate a second I-signal and a second Q-signal. An automatic gain control (AGC) circuit suppresses amplitude errors of the second I-signal and the second Q-signal to generate a third I-signal and a third Q-signal. A complex multiplier removes frequency and phase offset components of a carrier wave included in the third I-signal and the third Q-signal to generate a fourth I-signal and a fourth Q-signal. A phase detector detects first and second amplitude errors of the fourth I-signal and the fourth Q-signal, respectively, with respect to one normal signal point and calculates a phase error of the fourth I-signal and the fourth Q-signal.

Abstract: Alternate speech and data communication over a single circuit is implemented within a communication network which include first nodes which include both a data source and a speech source. Digital information, comprising either speech parameters or data, is sent in discrete blocks between the first node and a second node connected to the network. An inband signaling bit pattern is included within selected blocks sent by a TX-alternator in the sending node to indicate whether all following digital information is to be interpreted by the receiving node as speech or data and a RX-alternator in the receiving node interprets the digital information in accordance with the last received inband signaling pattern. One exemplary implementation is in a GSM cellular radio network in tandem free operation.

Abstract: Disclosed are a method, a system and a device for the transmission of multimedia streams via telecommunication lines. Especially, the disclosure relates to information transfer in video or audio teleconferences. The invention provides a scale of priorities for active transmission of the streams, wherein the priority status of each stream is changed dynamically with respect of attributes of substreams of the multimedia streams. Only the streams with the highest priority levels are actively transmitted.

Abstract: A method and an apparatus implementing a shaping function in a fixed length cell switching network node adapter supporting output lines in a telecommunication network. The adapter includes a Time Division Multiplexing (TDM) table where each entry is a pointer to a first cell of a queue of cells stored in the adapter for a given traffic. When a new traffic is established, the TDM table is updated. A placement device performs the pre-computation of the best placement of the entries reserved for one traffic in the TDM table. The placement device minimizes the Cell Delay Variation as computed by a Generic Cell Rate Algorithm (GCRA--ITU standard organization) policer. The Cell Delay Variation (CDV) is defined as the deviation of the placement of the cells from their ideal position in an output stream, the ideal placement being when the cells are spaced with an interval corresponding to the period of traffic negotiated at traffic establishment time.

Abstract: A first transmitter (103) reduces an interference in a time division duplex (TDD) communication system (100). The first transmitter (103) alternates from a transmit state in which a first information signal (130) is transmitted to a standby state in which a residual signal (132) is transmitted. The first transmitter (103) includes a transmitter section (142) and a controller (141). The transmitter section (142 transmits the first information signal (130) and the residual signal (132). The transmitter section (142) includes a power amplifier (144) to amplify the first information signal (130) and the residual signal (132) to a power level; and an exciter (143) to control a carrier frequency of the first information signal (130) and the residual signal (132). The controller (141) is coupled to the power amplifier (144) and the exciter (143), for adjusting the power level and setting the carrier frequency.