A digital switching system connecting buses with incompatible protocols and a telephone answering system and private automatic branch exchange with integrated voice and textual message recording.

PBX – Acronym for Private Branch Exchange, is a small private version of a phone company’s larger central switching office.

PBX (Private Branch Exchange) – A small, privately-owned version of the phone company’s larger telephone central switching office.

A method for enabling a transaction between a user and a server by setting up a call (A3-A5) between a user and a server via an automatic switching system, and transmitting user identification data to the server.

A small cost-effective crossbar switch is provided.

The second automatic switch (PBX21a) is configured with routing rules and data which, for the first switch (PBX11c), authorise access to at least one service offered by the second network (PN21).

Incoming calls for the communications network are distributed by a call distribution device (1) to a corresponding switching device (7), said switching device being provided for accepting and forwarding the calls.

The functions performed by the transmission control unit are to transmit the state of functions of an autoswitch, the analysis of scenary of communications (3, 4, 5), the results of circuit measurements, and to modify the functions of an autoswitch.

Concerning networked micro-computers, the invention enables to produce a shared auto-commutation switch.

However the 'autoswitch' function on all our products enables you to switch between your 2 SIMs at a timed interval, to notify you if you've missed a call, received a message, etc.

However the 'autoswitch' function on all our products enables you to switch between your 2 SIMs at a timed interval, to notify you if you've missed a call, received a message, etc.