Reducing echo at the end point of a VoIP call
- Published February 22nd, 2007 in Hardware
If people at the other end of the call are always complaining about echo, especially when you’re using a SIP hardware like Linksys PAP2, then consider reducing the FXS Port Input/Output gain. Basically, the echo is the result of a high volume of the speaker that bounces back at the microphone.
I set mine at -12 dB (Input and Output) and it has cleared echo but it really depends on your PSTN (POTS) phone. Try adjusting it. It goes from 0 to -Infinity (remember that dB is logarithmic so 0 is actually quite loud).
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