[Freeswitch-users] DTMF negotiation

[kaiduan xie]

Alex,
Can you show the configuration example in vanilla configuration? I could not find out the example. To refresh your memory, I need to setup Freeswitch to send DTMF based on 200 SDP answer in B call leg.
1. If answer supports telephone event, then FreeSwitch sends DTMF in rfc2833.
2. If answer does not support telephone event, then FreeSwitch sends DTMF inband.
The call is a bridged call and DTMF always comes from A call leg in rfc2833.
Many thanks for help,
/Kaiduan

    On Tuesday, March 6, 2018, 6:28:22 p.m. EST, Alexey Sibyakin <alex at freeswitch.com> wrote:  
 
 Yes, it's possible. Vanilla config has example.
Alex
On Fri, Mar 2, 2018 at 12:39 AM, kaiduan xie <kaiduanx at yahoo.ca> wrote:

Alex,
Thanks for the help.
With <param name="dtmf-type" value="none"/> in sofia profile, the offer from FreeSwitch does not add telephone event support.

With <action application="set" data="execute_on_media=start_ dtmf_generate"/>, FreeSwitch always sends DTMF inband even the offer from FreeSwitch and answer both supports telephone event.
What I want is DTMF negotiation as below,
FreeSwitch always adds telephone event support in offer,
1. If answer supports telephone event, then FreeSwitch sends DTMF in rfc2833.2. If answer does not support telephone event, then FreeSwitch sends DTMF inband.
Is it possible?
Thanks again.
/Kaiduan
    On Thursday, March 1, 2018 3:22 AM, Alexey Sibyakin <alex at freeswitch.com> wrote:
 

 Hi,
You need <action application="set" data="execute_on_media=start_ dtmf_generate"/>in dialplan and probably<param name="dtmf-type" value="none"/>
in sofia profile
Alex
On Thu, Mar 1, 2018 at 12:02 AM, kaiduan xie <kaiduanx at yahoo.ca> wrote:

Hi,
We are encountering the following DTMF issue,
FreeSwitch adds telephone-event support in INVITE to SBC, SBC replies back without telephone-event support in 200. 
However FreeSwitch still sends out DTMF in RFC 2833 event.
I think FreeSwitch should send out DTMF inband instead of 2833 event, what is the configuration for this?
Many thanks for help,
/Kaiduan
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Alex Sibyakin | Support EngineerFreeSWITCH Solutions | 17345 Civic Drive #2531 Brookfield, WI 53045Email: alex at freeswitch.comWebsite: https://www.FreeSWITCH.comNeed commercial support? Contact sales at freeswitch.com f or details.
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Alex Sibyakin | Support EngineerFreeSWITCH Solutions | 17345 Civic Drive #2531 Brookfield, WI 53045Email: alex at freeswitch.comWebsite: https://www.FreeSWITCH.comNeed commercial support? Contact sales at freeswitch.com for details.
_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting at freeswitch.org
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Official FreeSWITCH Sites
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