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Analog Display Services Interface (ADSI)
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A Bellcore standard defining a protocol on the flow of information between a switch, a server, a voice mail system, or service bureau, for example, and a subscriber's telephone, PC, data terminal, or other communicating device with a screen. ADSI enables a text version of the conversation to be displayed on the screen during the telephone connection. As an example, the user dials into a voice mail account and receives an audio menu for the voice mail functions while the screen displays the menu in text form.
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Assisted Telephony
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The set of functions that are not just dedicated to telephonic functionality, but are designed to make the establishment of voice calls and media calls available to any Win32-based application. See also Basic Telephony, Extended Telephony, Supplementary Telephony.
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asynchronous
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Data transmission method that allows characters to be sent at irregular intervals over a line by preceding each character with a start bit and following it with a stop bit. See also synchronous.