On 27 Nov 2006, at 01:37, Matt wrote:
Hi,
I have an IVR that sounds just fine and dandy over ZAP. However, when
I dial in through an 800 number from a provider that I connect to via
IAX I get this 'blip' in the sound file. At first I thought it was
just packet loss, but it happens at the exact same spot every single
time. There are several parts to the IVR menu and several places
where this blip happens every single time you call in (but only over
IAX from this 800 provider). Can anyone possibly enlighten me as to
what might be causing this?
It's not a big deal... but I'm curious what is making it happen.
I guess that you are playing back a soundfile which isn't an
exact multiple of 20ms. At some point in the 1.2 evolution chan_iax
started
sending out short packets at the end of such files.
Some (older) Iax's don't like short packets and dump them.
You can fix it by padding the end of any files to a whole number of 20ms
or using a fixed length codec - like gsm.
Tim Panton
www.mexuar.net
www.westhawk.co.uk/
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