Siemens Aktiengesellschaft

Juniper Networks, Inc.

Hermann J Rodler

Mathias Kokot

Jerome Pascal Moisand

Thomas Gemmer

Kurt Melden

Franz Auracher

Alfred Ebberg

Bernd Noll

Eckhard Meissner

A network layer device controls provision of data link layer functionality by a data link layer device to provide a requested multimedia service to a subscriber. For example, the network layer device may control the performance of multicast elaboration by the data link layer device, or the queuing and forwarding of packets by the data link layer device to facilitate transmission of packets according to a Quality of Service class. The network layer device may send control messages to the data link layer device to dynamically configure a control object stored by the data link layer device, such as multicast filter information or a Quality of Service profile. The network layer device may be a service edge router, and the data link layer device may be a customer premises equipment device, e.g., a modem or wireless access point, or a switch, e.g., a digital subscriber line access multiplier.

Controlling data link layer elements with network layer elements

A communications system includes a base station and mobile terminals. Voice data are transmitted within data packets in asynchronous transmission. The base station has an air interface for implementing first partial connections to the mobile terminals and a network interface to a communication network via which second partial connections to further terminals can be implemented. The base station also contains a router for allocating data packets which arrive in existing first or second partial connections to second or first partial connections. The allocation is done in dependence on an address information item which specifies a terminal in the sense of a transmission destination and is in each case contained in the individual data packets. The mobile terminals also contain in each case a voice compression device and/or a voice decompression device.

Wireless communications system

An apparatus for generating an FSK-modulated optical signal has an optical two-filter FSK super-heterodyne receiver. The optical signal has two different polarization conditions that are orthogonal to one another. Due to the two-filter receiver and orthogonal conditions, polarization-independent reception is possible. Conversion of the polarized, optical signal into the optical signal having the orthogonal polarization conditions is accomplished by a switching device. Each condition has a corresponding bit status of a data signal. The data signal effectively controls the polarizatiion of the optical signal. Hence, the frequency boost can be freely selected while maintaining excellent bandwidth characteristics and optimum sensitivity.

Apparatus for generating an FSK-modulated optical signal having two

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Bergen, Germany

Hermann J Rodler