even when you have 100% soft phones you hear the blip? Do you hear the blip on every phone? Something in the mix must be doing generated tones or you would not hear them. FS would not just invent them. On Tue, Aug 16, 2011 at 5:55 PM, David Bolen <db3l.net@gmail.com> wrote:
Avi Marcus <avi@avimarcus.net> writes:
Could this be a keypad sound that gets picked up by the microphone?
Yeah, I considered that (wouldn't be the first time I've confused things while running experiments with a bunch of microphones and outputs next to each other), but in past tests, I've muted all input devices in the conference, and still hear it. Not sure I remembered to do that in the test in my last message, so I just re-ran it, with both blink and the PAP2T analog phone muted, and it still occurred.
In taking it one step further though, if the leg using DTMF is muted at the conference level (either via the cli or invoking mute through the DTMF bindings), then while DTMF is still recognized, nothing makes it to other participants. Which I guess either means something really is in-band (which doesn't explain my rtp pcap being silent, plus if in-band I'd expect to hear the full tone, since blink, which no analog DTMF detector should be all or nothing) or that flag is indirectly covering up the issue by avoiding whatever processing is putting the glitch on the other participant leg. I'll probably try adding some debugging to mod_conference at a few points to see if I can at least identify where it thinks the audio may be coming from (or at least confirm it thinks there is audio on the muted channel).
-- David
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