In telecommunication, the term automatic switching system has the following meanings:
1. In datacommunications, a switching system in which all the operations required to execute the three phases of information-transfer transactions are automatically executed in response to signals from a user end_instrument.
In an automatic switching system, the information_transfer transaction is performed without human intervention, except for initiation of the access phase and the disengagement phase by a user.
2. In telephony, a system in which all the operations required to set up, supervise, and release connections required for calls are automatically performed in response to signals from a calling device.
In data communications, an automaticswitchingsystem is a switchingsystem in which all the operations required to execute the three phases of information-transfer transactions are automatically executed in response to signals from a user end-instrument.
In an automaticswitchingsystem, the information-transfer transaction is performed without human intervention, except for initiation of the access phase and the disengagement phase by a user.
In telephony, it refers to a system in which all the operations required to set up, supervise, and release connections required for calls are automatically performed in response to signals from a calling device.
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