[Asterisk-Users] TDM Card FXO Question

[Rich Adamson]

> I have a TDM card with one FXO and one FXS. I am trying to make sure I
> understand correctly the TX and RX Gain in the Zapata.conf correctly. If
> I have a phone cord plugged into an FXO port tied into a POTS line and
> boost the TXGain, am I correct in thinking that the audio going back to
> the phone company is boosted by X percentage??

Yes, but its not really a percentage. The number that is entereed
into txgain is a "db" number (of gain or loss). So, txgain=5 says the
audio transmitted to the pstn is 5 db greater then the default value
of 0 db.