Comments (3)
return -1 from channel_digit_begin() is want asterisk core to generate DTMF
inband
Original comment by [email protected]
on 8 Aug 2011 at 9:02
from asterisk-chan-dongle.
Yes, I know that returning -1 would result in asterisk generating the dtmf. I
was just curious to find out why the code exists to have the dongle generate
dtmf. Is it just historic, or maybe the dongle-generated dtmf is more reliable
due to dongle-internal volume control?
If there is no real advantage in dongle-generated dtmf, the more clean solution
(imho) would be to just delegate it to asterisk. If there is an advantage, that
should be documented...
Of course, this bugreport is about a bug in some code, maybe in the dongle
firmware, maybe somewhere else, so it is still a good idea to find out if we
can track this issue down and fix it anyway, regardless of the question who
should generate dtmf ;-)
If it's in the dongle firmware, maybe that should be documented as well.
Original comment by [email protected]
on 8 Aug 2011 at 9:21
from asterisk-chan-dongle.
Did some more testing with this.
When IVR system is not responding to DTMF keys, it also doesn't work when
generating inband DTMF (i.e. playing dtmf digits and holding receiver in front
of speakers).
When hanging up and redialing, it worked again, so no dongle reset/reload
necessary. Generated inband dtmf through speakers also works after redialing,
so should have worked even if DTMF generation in the dongle was bugged.
So, maybe it's not the dtmf generation that's bugged, but maybe it's the audio
not being sent to the remote party...
I'll switch the dongle to 2G-only mode and use a radio to find out whether or
not it is sending anything at all when dtmf in the menu isn't working ;-)
(There is a slight chance the provider's IVR isn't detecting DTMF due to a
problem with their system, but that's not very likely.)
Original comment by [email protected]
on 15 Aug 2011 at 10:31
from asterisk-chan-dongle.
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