I have an analogue phone connected to Asterisk via a Linksys SPA2102 VoIP/SIP interface. The gain on the speaker’s voice on this phone is low but I can increase it successfully with the following in the extension configuration:
A problem arises however when the caller to this extension makes a transfer to another number, the “transfer” audio message becomes blisteringly loud and distorted (the distortion starts at VOLUME(TX)=2).
Is there some way I can lower the gain on the message for this particular extension only?
I’m running Asterisk 13.18.3