| 摘要 |
A telephone adapter includes a phone connector, for connecting to a telephone handset, and a line connector, for connecting to a telephone line of a circuit-switched telephone network. An analog front end (AFE) converts digital input samples received from the computer interface into analog audio signals, and converts the analog audio signals in the telephone adapter to digital output samples for transfer via the computer interface. Switching circuitry is coupled between the phone connector, line connector and AFE, and is controllable by a computer via a computer interface.
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