The ISDN telephone exchange

The ISDN telephone exchange that is used for the experiments is configured as follows:

  nr.1 power supply
nr.1 base board, containing the CPU and the switching matrices
nr.2 ISDN base accesses (interface "S")
nr.1 console telephone
More details on the characteristics of the telephone exchange can be found in the Manual of the manufacturer.

Numbering:

  The 2 base accesses, on the S-bus, are accessible through as many RJ45 sockets. 
The numbering of the 2 lines (programmed in the telephone exchange) is shown in the following figure. 
Each line is identified by 3 different numbers, that correspond to the numbers that are taken by the telephones that can be connected to them.