Abstract: A collimator for a laser assembly includes a first electrostatically controllable liquid lense having a first optical axis and a second electrostatically controllable liquid lense having a second optical axis aligned with the first optical axis. A laser is provided and has such a collimator. Finally, a transmitter uses the laser for optical data transmission.

Abstract: A method and a device are provided for processing data in an optical network. The method includes the steps of events of a login scan are recorded by a first optical network element; the events are conveyed to a second optical network element; and the events are processed by the second optical network element. A communication system is described that includes the device.

Abstract: A method and a device for operating a laser in an optical component are provided, wherein the laser is a local oscillator of the optical component; and wherein a linewidth of the laser is broadened. Furthermore, an optical communication system is suggested comprising said optical component.

Abstract: A method and an optical component for data processing in an optical network are provided, wherein two sets of wavelengths are allocated; wherein at least one set of wavelengths is monitored; and wherein a collision between the two sets of wavelengths is avoided or compensated by adjusting at least one laser of an optical component. Furthermore, an optical communication system is suggested including said optical component.

Abstract: A method for data processing in an optical network element is provided. An event of a forthcoming mode-hop of a tunable laser is detected. Furthermore, a corresponding optical network element and an optical communication system with at least one such optical network element are described.

Abstract: A method and a device for data processing in an optical network element are suggested, wherein the optical network element changes between a low-speed mode and a high-speed mode of data transmission. In this manner, the optical network element has efficient power savings because it can effectively operate in the low-speed mode which requires less power consumption.

Abstract: A method and a device for data processing in a network having a first network element and a second network element performs the following steps: (a) the second network element provides a control information to the first network element; (b) a portion of data sent from the first network element to the second network element is identified by the control information; and (c) upon identification of the portion of data a retransmission from the first network element to the second network element can be initiated.

Abstract: In a method and a device for data processing at a network component the following steps are carried out: a multiple-input-multiple-output processing is conducted and based on such processing a crosstalk and/or interference is at least partially reduced or cancelled. The device may be incorporated into a communication system.

Abstract: A method for diagnosing an optical communication network having a control system, an optical hub, and multiple optical network terminators. The hub communicates with all the network terminators via an inband management channel. In case one network terminator disturbs the communication from the network terminators to the hub and the communication from the hub to the network terminators is functional, the control system sends a shut-off command to one network terminator, checks if the disturbance is gone, if the disturbance is not gone, sends a pulse mode activation command to this network terminator, checks if there is a superposition signal of the disturbance signal with a pulse mode signal and marks the network terminator as bad, if the pulse signal is not superimposed.

Abstract: A method and a device for data processing between a first network element connected via several lines to several second network elements. The method includes the following steps: (i) if a line is trained, at least one other line is switched to a first mode; and (ii) if the line has been trained, the at least one other line is free to switch to a second mode.

Abstract: The invention relates to, among other things, a method during which a network element (58, 60) of a data transmission network (50) is automatically integrated into a method for establishing a loop-free tree structure or is automatically removed from such a method. By taking preset criteria into account, it is ensured that no loops can arise in the data transmission network (50) when removing a network element from the method for establishing a loop free tree structure.

Abstract: A method and a device are provided for transmitting or receiving a clock signal. The method includes the step of transmitting or receiving at least two wave bands via a digital subscriber line, wherein a clock signal is conveyed via one of the at least two wave bands. The clock signal may be used for mobile clock synchronization.

Abstract: In a method for processing a network service request, a first network element that is logically closest to a user requesting the network service manages a file into which data can be entered in respect of a user authorization to receive the network service. A network element includes a device for allowing and blocking transmission of a network service to a user requesting the network service. The device can be switched in accordance with the authorization data contained in the data memory.

Abstract: The invention relates to a method for transferring information from and/or to a subscriber-sided communication device (CPE), wherein at least one first communication relationship (ps1) between the subscriber-sided communication device (CPE) and a decentralised communication device (DSLAM) which is associated with at least one communication network (ACCESS), is established. Also, at least one additional communication relationship (ps2) between the central communication device (DSLAM) and a network access device (BRAS) which establishes a connection to a superior communication network (OKN), is established. First information (iwww) can be exchanged between the subscriber-sided communication device (CPE) and the superior communication network (OKN) via the first and the at least one additional communication relationship (ps1, ps2).

Abstract: The invention relates to, among other things, a method during which a network element (58, 60) of a data transmission network (50) is automatically integrated into a method for establishing a loop-free tree structure or is automatically removed from such a method. By taking preset criteria into account, it is ensured that no loops can arise in the data transmission network (50) when removing a network element from the method for establishing a loop free tree structure.

Abstract: The packet-oriented communications facility comprises at least one token-bucket unit, which comprises a time-bucket unit and of a byte-credit unit. Data volume tokens, which each represent a predetermined data volume, are stored in the byte-credit unit. A token generation time interval and a token generation time are assigned to the time-bucket unit. In addition, a processing time is assigned to each data packet before the subsequent processing. In the time-bucket unit, the transmission time interval available for the subsequent processing of a data packet is determined, and a portion of the available transmission time interval is converted into data volume tokens solely in the event that the token generation time interval is exceeded by the determined available transmission time interval. The generated data volume tokens are stored in the byte-credit unit, and the token generation time is updated.

Abstract: The packet-oriented communications facility comprises at least one token-bucket unit, which comprises a time-bucket unit and of a byte-credit unit. Data volume tokens, which each represent a predetermined data volume, are stored in the byte-credit unit. A token generation time interval and a token generation time are assigned to the time-bucket unit. In addition, a processing time is assigned to each data packet before the subsequent processing. In the time-bucket unit, the transmission time interval available for the subsequent processing of a data packet is determined, and a portion of the available transmission time interval is converted into data volume tokens solely in the event that the token generation time interval is exceeded by the determined available transmission time interval. The generated data volume tokens are stored in the byte-credit unit, and the token generation time is updated.

Abstract: The invention relates to a nonblocking switching network, comprising a plurality of input/output terminals (LI0 to LI15) for connecting a plurality of line terminator groups (LTG) for a plurality of data channels (BO) to be switched; and a time/space switching network (ZRKN). An input/output stage has a concentrator network (KN) with a concentrator/demultiplexer device (KT) which condenses/divides the plurality of data channels (BO) to be switched in the switching network. Said time/space switching network (ZRKN) consists of at least one n/n switching matrix (KM). This results in a 100% nonblocking switching network which is flexible and can be expanded modularly.

Abstract: A configuration for clock regeneration includes a frequency measuring device having an input for receiving a reference frequency signal. A digital signal processing device is connected to the frequency measuring device. A numerically controlled oscillator is connected to the digital signal processing device. A clock device supplies a local clock signal to the frequency measuring device and to the numerically controlled oscillator. The configuration for clock regeneration can be implemented in all-digital form and has no feedback control loop, requires no locking process, has no increased jitter in the jitter transfer function and allows fast frequency hopping. A method for clock regeneration is also provided.