Back View; Left Side View; Right Side View - Intelbras HSB 20 Manual Del Usuario

Back view

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1. PABX extension line jack
2. Ring volume settings

Left side view

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1. Jack for headset connector
2. Tone/Pulse mode switch
3. Flash time setting (100 or 300 ms) for PABX call transfers

Right side view

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1. Dial audio volume
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