Doug Crompton wrote:
Two other Digium bug reports on this issue. It sure looks like it is an *
issue and rather complex??? Any hope for a solution??
http://bugs.digium.com/view.php?id=5970
http://bugs.digium.com/view.php?id=6027
It is an * issue, tested and confirmed. Makes any PSTN side IVR
application unaccessible. It is there for the past 2 years. Current
rfc2833 implementation in Asterisk requires a total rewrite to fix this.
This issue was raised several times, with some answers being an attempt
to challenge Sipura's own rfc2833 implementation validity or a promise
to fix or submit-your-fix kind of answers. Several possible fixes were
posted but never made it to the trunk. If you can leave * out of the
path, you wont have any DTMF problems, as soon as * is in the voice
path, the dtmf packet sequencing bug manifests itself.
You have a choice of disabling all codecs except alaw/ulaw and sticking
to the inband dtmf option on both sipura and asterisk sides.
HTH,
Vahan
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