Line Devices Overview

A line device is a physical device such as a fax board, a modem, or an ISDN card that is connected to an actual telephone line. Line devices support telephonic capabilities by allowing applications to send or receive information to or from a telephone network. A line device is the logical representation of a physical line device, one of the two device classes supported by TAPI. This section describes line devices and explains how to use the line functions that access these devices.

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