search for: 14db

...2023 (and 2022), calls from an outside pstn line coming into asterisk incure a 7db pstn loss (which can't be adjusted for with rxgain and txgain as changing those values to something reasonable generates echo). Retrieving that VM message from an outside location creates another 7db loss (now -14db down in total), making it very difficult (if not impossible) to hear the message. (And, yes I've gone through all the recommendations with wav vs gsm files, etc.) The work around "only" kicks in if the call comes from a zap channel and ends up in voicemail, adding a 6db gain to th...