Telecommunication system and method for implementing an ISDN PBX interface
First Claim
1. Telecommunication system comprising a telephone exchange (1) provided with ISDN properties, including an information channel B and a signalling channel D, a primary rate interface (2) connected to the telephone exchange (1), a private branch exchange interface (3) communicating with the telephone exchange (1), and an ISDN private branch exchange (4) connected to the telephone exchange via the PBX interface, characterised in that the system comprises means (6) for dividing the primary rate interface (2) into at least two PBX interfaces (3, 3′
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Accused Products
Abstract
An ISDN telecommunication system and a method for implementing a private branch exchange interface. The system comprises an ISDN exchange (1), a primary rate interface (2), a PBX interface (3) and an ISDN PBX (4) provided with a multi-channelling device (6) for dividing the primary rate interface (2) into at least two PBX interfaces (3, 3′). In the invention, a B channel in the primary rate interface is converted into a D channel, which is used in the PBX interface (3, 3′). On the other hand, the information in the D channel of the primary rate interface (2) can be used and is distributed between the PBX interfaces (3, 3′).
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Citations
11 Claims
- 1. Telecommunication system comprising a telephone exchange (1) provided with ISDN properties, including an information channel B and a signalling channel D, a primary rate interface (2) connected to the telephone exchange (1), a private branch exchange interface (3) communicating with the telephone exchange (1), and an ISDN private branch exchange (4) connected to the telephone exchange via the PBX interface, characterised in that the system comprises means (6) for dividing the primary rate interface (2) into at least two PBX interfaces (3, 3′
- 7. Method for implementing a private branch exchange interface in a telecommunication system comprising a telephone exchange (1) provided with ISDN properties, including an information channel B and a signalling channel D, a private branch exchange interface (3) communicating with the telephone exchange (1), and an ISDN private branch exchange (4) connected to the telephone exchange (1) via the PBX interface (3), characterised in that the primary rate interface (2) is divided into at least two PBX interfaces (3, 3′
Specification