Efficient connection of ISDN private branch exchanges to a packet-switched network
AssigneeNokia Siemens Networks Oy
InventorNorbert Löbig
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Abstract
The invention relates to the representation of ISDN connections, which is independent of the type of connection, in a packet-oriented exchange. By adapting the signaling information, which is transmitted by ISDN connections, in a peripheral adapter, different ISDN connection types can be handled as a standard connection type in the packet-oriented exchange. The adaptation can ensue, for example, with the aid of a conversion table for the useful data references and call identifiers comprising signaling messages. The invention is advantageous in that it involves an uncomplicated representation of ISDN data in the packet-oriented exchange. ISDN connection-related data do not need to be managed in the packet-oriented exchange.
Claims16
A method for exchanging signaling information between a PRA ISDN connection and a packet-oriented exchange via a peripheral adapter, comprising:
- processing by the packet-oriented exchange signaling information transferred from the PRA ISDN connection signaling information of a BRA ISDN connection out of a plurality of BRA ISDN connections;
- adapting in the peripheral adapter the signaling information transferred from the PRA ISDN connection in accordance with the ISDN connection type of the BRA ISDN connection;
- and
- adapting signaling information transferred from the packet-oriented exchange to the peripheral adapter in accordance with the ISDN connection type of the PRA ISDN connection, wherein the PRA ISDN connection is represented by said plurality of BRA ISDN connections in the packet-oriented exchange, and
- wherein call identifiers of said plurality of BRA ISDN connections are adapted in said peripheral adapter with respect to uniqueness within the D-channel of said PRA ISDN connection and wherein call identifiers transmitting via the D-channel of said PRA ISDN connection in the direction of said packet-oriented exchange are allocated to the D-channels of said plurality of BRA ISDN connections without adaption.
A peripheral adapter for a connection of an ISDN private branch exchange or ISDN terminal to a packet network, comprising a resource for adapting signaling information transferred from a PRA ISDN connection to a packet-oriented exchange for the purpose of the signaling information being processed by the packet-oriented exchange as signaling information of BRA ISDN connections, wherein said peripheral adapter is adapted to adapt call identifiers of a plurality of BRA ISDN connections with respect to uniqueness within the D-channel of said PRA ISDN connection and wherein said peripheral adapter is adapted to allocate call identifiers transmitted via the D-channel of said PRA ISDN connection in the direction of said packet-oriented exchange to the D-channels of said plurality of BRA ISDN connections without adaptation.
Dependencies are inferred from the claim text.