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TECHNICAL SPECIFICATIONS
PIN 3: Ground
PIN 4: Right Channel
Telephone Answering Device (TAD) In/Out:
PIN 1: Modem Audio Input
PIN 2: Ground
PIN 3: Ground
PIN 4: Boosted (30 dB) Microphone Output
External Audio Connectors
Mic In:
Connector: 3.5-mm (1/8-inch) mini phone jack
Tip = Switchable BIAS
Ring = Float
Sleeve = Ground
Nominal Input Level = 30 mV r.m.s. Max
Nominal Input Impedance = 50K Ohms
Aux In:
Connector: 3.5-mm (1/8-inch) TRS mini phone jack
Tip = L channel
Ring = R channel
Sleeve = Ground
Max Input Level = 1 V r.m.s. (2.8 V p-p)
Nominal Input Impedance = 50k Ohms Output