Brian,

Thanks for responding.

1] I had already set it in the channel variable for the bridge line. Freeswitch *always* seems to convert between INFO --> rfc2833. In the internal and external profiles. I have removed "liberal-dtmf" and also set "dtmf-type" to "info". And the bridge line contains "dtmf_type" as info. Am I missing something here?

logs - 1fc06e8a-f334-11e4-ade6-413a2da7e1fc Dialplan: sofia/internal/nXXX.sXXX@voip.XXX.com Action bridge({sip_cid_type=pid,dtmf_type=info,origination_privacy=screen,ignore_early_media=true}sofia/gateway/tata/XXXXXXX)

Tested on latest master and on 1.5.13b. Same thing.

2] The bug from what I tested.

- if "liberal-dtmf" is set to false and even though "dtmf-type" is set to "info" in the profile, then I see "channel is not configured to use info dtmf” .

>From the latest master. In mod_sofia.c

8589 if (dtmf.digit) {

8590 if (tech_pvt->mparams.dtmf_type == DTMF_INFO ||

I believe it should instead be checking what is set in the profile. if (tech_pvt->profile->dtmf_type == DTMF_INFO).

3] Sonus RTP fixes - Yes I have applied them. It probably works most of the time. But I occasionally get complains from my customers regarding - missing dtmf and repeated dtmfs. I am hoping moving to INFO will fix the problem for good ? Any thoughts ?

thank you very much!

Sharath

From: freeswitch-users-bounces@lists.freeswitch.org <freeswitch-users-bounces@lists.freeswitch.org> on behalf of Brian West <brian@freeswitch.org>
Sent: Monday, May 4, 2015 5:39 PM
To: FreeSWITCH Users Help
Subject: Re: [Freeswitch-users] DTMF relay with INFO across bridge

https://freeswitch.org/confluence/display/FREESWITCH/Channel+Variables#ChannelVariables-dtmf_type

I suspect you only need to set the dtmf_type inside the {} on the bridge line if you wish to send INFO, You do know we have a bunch of RTP bug flags that can be tweaked to make Sonus work correctly.

https://freeswitch.org/confluence/display/FREESWITCH/RTP+Issues

On Mon, May 4, 2015 at 1:07 PM, Sharath Kumar <Sharath.Kumar@mezocliq.com> wrote:

Hi,

I looked around in the mailing list and don’t see any conclusive solution to this problem.

I have a setup like this below.

Webrtc client -----FS----sonus gateway.

The Webrtc client is sending INFO as DTMF. The FS currently bridges the call to the gateway and in the outbound leg uses rfc2833.

Problem: Some calls suffer from missing DTMF and repeated duplicate DTMF.

Solution: Use INFO all through to sonus gateway ?

How do I achieve this ?

In the internal profile if I change the “dtmf-type” to “info”. Nothing really happens, it still sends rfc2833 dtmf. I believe it is because of “liberal-dtmf” is “true”.[accept any but always offer rfc2833] But if I change “liberal-dtmf” to “false”. I get “channel is not configured to use info dtmf”.

Is this a bug ? Is there any way around it ?

Any input much appreciated.

Thank you,

Sharath

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