Phone Line Interface (PLI)

The PLI allows recording and playback of modem audio from Plain Old Telephone Service (POTS) lines. The audio can then be used in various telephone line applications.

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Overview

The AALogic Phone Line Interface (PLI) provides a passive, non-intrusive audio interface between a POTS phone line and an audio recorder or playback device. The PLI has an RJ11 connector for connection to a phone line and a 3.5mm audio jack for connection to a PC or other audio recorder or player.

The PLI allows recording of modem audio from Plain Old Telephone Service (POTS) lines. The audio can then be used to analyze communications problems and for data capture. The audio can be played back into an Analog Data Monitor (ADMpc or ADM2400) to see the communications data information.

The PLI can be used to record any audio from a phone line. It can also be used to send audio on a phone line. These applications include music and voice announcements.

Connection

The PLI includes a standard phone line cable with RJ11 connectors on each end. An audio cable with 3.5mm plugs on each end is also included.

Connect either end of the provided cables to the PLI. Connect the other end of the phone cable to the phone line. This may be a wall plate, T-adapter, or a connector on a test device.

Connect the other end of the audio cable to the recording device or other audio device.