Telefonaktiebolaget Lm Ericsson (publ)

Jonas Bertil Bjurel

Anders K Eriksson

Lars-Örjan Kling

Erlendur Karlsson

Thomas L Lindquist

Carl Ålund

Lars Olof Lindberg

Erik Anders Stenkvist

Lennart Roland Habbe

Local media rendering of a multi-party call, performed by a Client User Equipment. The media is encoded by each party in the call, and sent as a media stream to a Media server, and the media server receives a request for media streams from each Client User Equipment, each media stream in the request associated with a client priority. The Media server selects the media streams to send to each Client User Equipment, based on the request, and further such that the number of streams does not exceed a determined maximum number, which is based, e.g., on the available bandwidth.

Local media rendering

The invention involves local media rendering of a multi-party call, performed by a Client User Equipment (). The media is encoded by each party in the call, and sent as a media stream to a Media server (), and the media server receives a request for media streams from each Client User Equipment, each media stream in the request associated with a client priority. The Media server selects the media streams to send to each Client User Equipment, based on the request, and further such that the number of streams does not exceed a determined maximum number, which is based e.g. on the available bandwidth.

A method and system align frames of a digital link which interconnects two entities. Frames in which overhead is interleaved with payload are considered. The frame alignment is executed in two phases such that the actual frame alignment, in which a predetermined frame alignment word (FAW) is found, is preceded by a procedure called `column alignment`. The idea with column alignment is to find the positions for the overhead columns or overhead bits of a pending frame of payload and interleaved overhead. During column alignment the transmitting entity will send an easily detectable column alignment word (CAW) and the receiving entity will quickly recognize the overhead bit positions in the interleaved frame. When the positions for the overhead bits have been detected, the transmitting entity will start to send Normal Frames and the receiving entity will gain final frame alignment by finding the FAW in the overhead bit positions.

Telecommunication method and system

A plurality of input signals are switched in an apparatus including redundant switching planes and hardware for receiving an output signal from each of the redundant switching planes. Each switching plane is for switching the plurality of input signals, and each switching plane includes at least two switching modules, each switching module being connected to receive a subset of the input signals directly from an input signal source coupled to the apparatus. Each switching module is further connected to receive a remaining subset of the input signals from remaining switching modules on the same switching plane; and each switching module generates an output signal having components selected from the plurality of input signals. To improve performance in the event of a double fault, each switching module detects whether any of the remaining switching modules on the same switching plane are faulty. In response to any such detection, the switching module substitutes a signal representing a logical zero for those portions of the output signal that are selected to include one or more components from the faulty switching module. Also, when the means for receiving the output signal from each of the redundant switching planes detects that each of the output signals received from corresponding switching modules in the redundant switching planes is invalid; it responds by logically OR'ing the received output signals together. In this way, the likelihood of recovering a valid output signal is increased. In one embodiment of the invention, each switching module is a subrate switching module.

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Bromma, Sweden

Jonas Bertil Bjurel