Alcatel N.v.

Alcatel

Karl-Albert Turban

Bernd X Weis

Gerd Siegmund

Monika Bezler

Manfred Schulz

Lothar Krank

A network node () for switching digital information of different protocol types is described. A plurality of modules (-x,-x,-x) are provided which are arranged in an input stage (), a central stage () and an output stage (). Each module (-x) of the input stage () is connected to each module (-x) of the central stage () and each module (-x) of the central stage () is connected to each module (-x) of the output stage (). A standard interface () for all protocol types is in each case provided between the input stage () and the central stage () and between the central stage () and the output stage (). Each of the modules (-x) of the central stage () is designed for one protocol type. The interfaces () comprise means for forwarding information as a function of the protocol type to a module (-x) of the central stage () adapted thereto.

Network node for switching digital information of different protocol types

According to the ITU recommendations for SDH or SONET, a payload exceeding the transmission capacity of the largest virtual container can be divided over several concatenated virtual containers. According to a method for the transmission of such a payload via a synchronous information transmission network (NET), the payload is divided into blocks and the individual blocks are packed into virtual containers (VC ), each of which has a path overhead and a payload field, and are transported as a virtual concatenation in at least one transport module. A pointer (Z) that points to the next virtual container in the concatenation is inserted in the path overhead of all virtual containers (VC ) except the last virtual container in the concatenation. This makes it possible to change the number of concatenated virtual containers (VC ) during a connection.

Transport of concatenated containers in a synchronous information transmission network

A method of transmitting a concatenated signal consisting of at least two component signals over an optical network comprising at least three network elements ( ) is disclosed in which at least two component signals are transmitted on at least two different wavelengths, and in which the component signals are assigned to the wavelengths for each section between two network elements ( ) in such a way as to minimize differential delays between the component signals for a predetermined receiving location. Concatenated transmission capacity can be allocated even if it is no longer available on one wavelength as a coherent whole.

Method of transmitting a concatenated signal

A first chip card is provided for use in a telecommunications terminal which is connected in a telecommunications network. The first chip card exchanges signaling and data directly with the telecommunications network at the telecommunications terminal. The first chip card includes a signaling and dam processor for processing the signaling and data exchanged with the telecommunications network and a signaling and data memory for storing signaling and data received from the telecommunications network and for storing signaling and data processed by the signaling and data processor. A telecommunications protocol processor of the first chip card processes multiple telecommunications protocols including both telecommunications protocols for radios and telecommunications protocols for wired communications. When the first chip card is inserted in the telecommunications terminal, the functionality of the telecommunications terminal is solely determined by the first chip card. A plurality of chip cards may be inserted in the telecommunications terminal, and the first chip card is further capable of checking whether at least one further chip card is inserted in the telecommunications terminal. The first chip card is also capable of exchanging signaling and data with another chip card in the telecommunications terminal.

Chip card

A private branch exchange (PABX) with an integrated mobile part for controlling cordless terminals (HS) is established, which can be operated from base stations (BS). The private branch exchange (PABX) contains freely configurable interface modules (I/F) for wired (DE) and cordless (HS) terminals, which can be operated from a base station (BS). A central control unit (PABX-CPU) is provided to control all call handling and service feature control tasks, and a subordinate control unit (Mobile-CPU) for call setup and switch-off control of the cordless terminals (HS) in accordance with a set of assigned call numbers. The control units (PABX-CPU, Mobile-CPU) and the interface modules (I/F) are connected with each other through a bus system (BUS).

Private branch exchange having a central control unit and a mobile

During data transmission or transmission of redundancy-reduced signals, the traffic volume and, hence, the necessary transmission capacity are not constant. Instead of the prior art approach of more or less intensive use of the total capacity, the basic idea of the invention is coded transmission and simultaneous use of more or less many, mutually orthogonal codes. An embodiment shows the use of a mixed code-division multiplex (CDMA)-time division multiplex (TDMA) radio system. The number of channels assigned to a signal station (CDMA) is determined anew frame-by-frame (TDMA) in response to requests in preceding frames.

Process, transmitter and receiver for data transmission with variable

An installation is described for establishing a connection between private branch exchanges (PABX), each of which has a base station allocated within a determined geographic area (GA), where the base station provides a determined number of utilization channels served by telecommunication, through which mobile cordless terminals communicate with the base station, and thereby with the branch exchange, throughout the geographic area. The base station (BS.sub.2) of a second branch exchange (PABX.sub.2) is located within the geographic area (GA) of a base station (BS.sub.1) of a first branch exchange (PABX.sub.1), and a wireless cross linkage is established by the two base stations (BS.sub.1, BS.sub.2) and their telecommunication (PABX.sub.1, PABX.sub.2).

System for establishing a connection between private branch exchanges

A method is disclosed for synchronizing a system frame-structured in accordance with a digital synchronous hierarchy, particularly as specified in CCITT G.708. In a hunt mode, one frame sync word is detected, and then a first pointer (AU-4) is read which is spaced a predetermined distance from the sync word and addresses a cell-structured data area (VC4). Then the headers of the ATM cells in the data area, which are addressed via the pointer, are decoded, and if x successive correct cell headers are decoded, a transition to the sync state takes place. If data structures of an SDH system or a purely cell-structured transmission of ATM cells have to be identified, an incoming bit sequence is checked for a predetermined frame sync word (SDH frame) and then for code words representing regularly inserted cell headers, and a change to either a frame sync mode or a cell sync mode takes place.

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Leonberg, Germany

Karl-Albert Turban