[Freeswitch-users] DTMF not passed through to client

[Johannes Jakob]

Hi Steven,

thanks for helping!

What "device" do you think is the problem? 
Are you talking about the Upstream? I don't think he can be the problem since it is a very large ISP in Germany with lots of clients not complaining ;)

>> Upstream >rfc2833> FreeSWITCH >rfc2833> Asterisk


I can't give you the raw pcap files, but I hope the information put up here: http://3js.de/20110304/ contains the information you need.


freeswitch at internal> version 
FreeSWITCH Version 1.0.head (git-7847289 2011-02-19 23-38-04 +0100)


BTW: this freeswitch box is a virtual machine, running on citrix xen dom0. could this be a problem?


Best regards,

  Johannes



On 04.03.2011, at 05:43, Steven Ayre wrote:

> Are you running the latest version?
> 
> It appears the dtmf is failing a sanity check and getting ignored as a result, possibly as a result of the device sending the wrong rtp timestamps. Can you get a tcpdump of the rtp stream?
> 
> Steve on iPhone
> 
> On 3 Mar 2011, at 22:50, Johannes Jakob <jjj at 3js.de> wrote:
> 
>> Hi,
>> 
>> what do I have to do to get RFC2833 DTMF passed to the client in an inbound scenario like this:
>> 
>> Upstream >rfc2833> FreeSWITCH >rfc2833> Asterisk
>> 
>> ?
>> 
>> The Upstream is sending the DTMF tones correctly:
>> 
>> ---
>> 329    2.114845    UPSTREAMIP    FS_IP    RTP EVENT    62    Payload type=RTP Event, DTMF Eight 8
>> ---
>> 
>> FreeSWITCH isn't logging much of the dtmf stuff, even with loglevel debug:
>> 
>> http://pastebin.freeswitch.org/15541
>> 
>> ...
>> Set 2833 dtmf receive payload to 101
>> ...
>> 2011-03-03 23:29:59.498466 [ERR] switch_rtp.c:282 Failed DTMF sanity check.
>> ...
>> 
>> 
>> User's directory entry includes:
>> 
>>     <param name="dtmf-type" value="rfc2833"/>
>>     <param name="pass-rfc2833" value="true"/>
>> 
>> I tried adding those in the gateway profile as well, no change.
>> 
>> 
>> On the asterisk box I don't see those rtpevents in the pcap trace anymore, they just vanish on the FS box.
>> 
>> 
>> Can somebody help me out here? Or point me to the right wiki page?
>> http://wiki.freeswitch.org/wiki/Sofia_Configuration_Files#DTMF doesn't really tell me, what the options do and http://wiki.freeswitch.org/wiki/DTMF is something different.
>> 
>> 
>> Thanks and bye,
>> 
>> Johannes
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