james18 wrote: "unwanted sounds"
That's called DTMF Talkoff. It's usually triggered by someone with a high pitched voice or by high pitched sounds.
Depending on your needs, you could try this: in your ATA (admin and advanced settings), navigate to Regional-->Miscellaneous. Change DTMF Playback Level to something very low, such as -90 (or whatever the lowest value is that the ATA accepts).That should make DTMF sounds from incoming audio extremely quiet or inaudible. Instead of hearing a beep, you'll hear silence or a gap in the audio since the audible portion is being replaced by silence.
But if you have any device connected to your PAP2 that needs to be accessed or controlled remotely using DTMF tones, such as a physical answering machine, you won't be able to do it.
That setting would affect incoming beeping.
DTMF Process INFO, DTMF Process AVT to No
That affects incoming DTMF Talkoff, which you could leave set to No, with the understanding that attached devices to the PAP2 that need to be controlled by DTMF won't function properly.
That's probably better than replacing occasional beep noises with silence, actually. You can probably leave those settings at “No” if you only have telephones attached to your PAP2.
DTMF Tx Method to InBand
That affects outbound DTMF talkoff. And that's the setting causing the problem with FPL's voicemail when dialed from your PAP2. That setting affects devices or services that you're calling (outbound).
Given what took place, obviously these settings solved one problem but created another .
Yes, changing DTMF Tx Method did.