<div dir="ltr">2833 is the default.<br>INBAND is not a function of the sip module it's implemented on top of the abstraction layer.<br><br>Are you doing trans coding or different ptimes between the 2 legs?<br><br>you might want to turn up the debug log "press f8" and you will pretty verbose logging of the 2833.<br>
also consider taking a pcap of the network traffic.<br><br>What is the provider? 2833 is notoriously done wrong to the point that doing it exactly right can put you at a disadvantage.<br><br><br><br><br><br><div class="gmail_quote">
On Thu, Sep 11, 2008 at 4:58 PM, Marc Lewis <span dir="ltr"><<a href="mailto:marc@avvatel.com">marc@avvatel.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
I've been having a problem getting DTMF passed through from registered<br>
phones to my termination provider. Sometimes it works, sometimes it<br>
doesn't. My provider is set for rfc2833.<br>
<br>
In looking through the mod_sofia.conf.xml file, and the sofia sources,<br>
it appears that the only two options for DTMF are info and rfc2833.<br>
I've tried various combinations and the only thing that ever seems to<br>
even sometimes work is if pass-rfc2833 is set to true. I've tried this<br>
with Linksys SPA 942 phones, Grandstream GXP 2000 phones and Cisco 7940<br>
phones. Doesn't seem to make a difference. I've also tried various<br>
dtmf-durations and that didn't seem to have an effect either.<br>
<br>
However, after doing various searches it appears that not explicitly<br>
setting a dtmf-type in a sofia profile, it defaults to using inband DTMF.<br>
<br>
Is this correct? If inband DTMF is the default, then I will have my<br>
termination provider switch my account over to using inband instead of<br>
rfc2833.<br>
<br>
- Marc<br>
<br>
--<br>
Marc Lewis<br>
Avvatel Corporation<br>
<br>
<br>
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