Is there a way to change the line level on the fxo ports? The sound on my phone is turned all the way up for incoming calls, but for internal calls like picking up voice messages I have to turn it down. It just seems a little bit low for such a contrast in sound between internal and external.
I used to have a phone system where it would automatically analyze the PSTN lines and adjust the db accordingly. They would never be at the same levels, so I'm thinking I might have to test and change each one.
My voice going out seems to be okay, it's just the external incoming calls that need to be amplified a bit.