On Thu, May 6, 2010 at 12:23 PM, Madovsky <infos@madovsky.org> wrote:

right,

but in case of the SIP caller needs to send digits to FS,

his SIP phone should in any way send DTMF, isn't it ?

in fact I'm trying to implement rfc2833 in my own sip phone through RTP,

but if there is a way to send from caller a string var representing the digits typed to FS once bridge is done

and transfer it as dtmf digits I will be happy too...

Hook up a phone to your FS. If you have the default dialplan then call 9999. Go to fs_cli and make sure you are at /log level 7
From the phone press some digits. You will see them pop up on the display:
2010-05-07 15:03:56.407327 [DEBUG] switch_rtp.c:2805 RTP RECV DTMF 1:1920
2010-05-07 15:03:56.407327 [DEBUG] mod_dptools.c:1409 Digit 1
2010-05-07 15:03:57.688237 [DEBUG] switch_rtp.c:2805 RTP RECV DTMF 2:2880
2010-05-07 15:03:57.688237 [DEBUG] mod_dptools.c:1409 Digit 2
2010-05-07 15:03:58.669178 [DEBUG] switch_rtp.c:2805 RTP RECV DTMF 5:3200
2010-05-07 15:03:58.669178 [DEBUG] mod_dptools.c:1409 Digit 5

FreeSWITCH knows to look for the DTMFs.
-MC

----- Original Message -----

From: Phillip Jones

To: freeswitch-users@lists.freeswitch.org

Sent: Thursday, May 06, 2010 3:06 PM

Subject: Re: [Freeswitch-users] Fw: rfc2833 confusion

Yes that allows you to play a prompt and then wait for the person on the line to enter digits.

On Thu, May 6, 2010 at 2:15 PM, Madovsky <infos@madovsky.org> wrote:

is this the right link ?

http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_play_and_get_digits

----- Original Message -----
From: Madovsky

To: freeswitch-users@lists.freeswitch.org

Sent: Thursday, May 06, 2010 2:10 PM

Subject: Re: [Freeswitch-users] rfc2833 confusion

But how to catch digits form a dialplan when the call

is already on ?

----- Original Message -----

From: Phillip Jones

To: freeswitch-users@lists.freeswitch.org

Sent: Thursday, May 06, 2010 1:43 PM

Subject: Re: [Freeswitch-users] rfc2833 confusion

http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_send_dtmf

Don't get to hung up on the inband / out of band thing. This will be negotiated by FS and the carrier when the call is set up. For instance, when you use G729 you need out of band DTMF but for G711 you can use both. This might change from call you call, depending on what media gateways can handle.

If you want to "see" and hear DTMF - fire up wireshark (or Tshark) and capture the trace. You can see the RTP DTMF in the trace and hear the clamped audio from the carrier perhaps. Or just hear the inband tones. It gives a good visual of what is going on.

On Thu, May 6, 2010 at 1:25 PM, Madovsky <infos@madovsky.org> wrote:

I anyone knows a link of a programming example of how

to inject rfc2833 in RTP flow (doesn't matter the language)

It would be very useful

Thanks

F

----- Original Message -----

From: Madovsky

To: freeswitch-users@lists.freeswitch.org

Sent: Thursday, May 06, 2010 12:39 PM

Subject: Re: [Freeswitch-users] rfc2833 confusion

god, so many confusion for only an audio tone ! ;)

anyway if I understand it's called inband by the fact that it's in RTP flow onlly.

so the rfc2833 packet is only an event payload ...

----- Original Message -----

From: Anthony Minessale

To: freeswitch-users@lists.freeswitch.org

Sent: Thursday, May 06, 2010 11:52 AM

Subject: Re: [Freeswitch-users] rfc2833 confusion

both 2833 and actual tones in the audio stream are often called in-band because the 2833 is just a transport for the inband tones that is assumed to be reconstructed on the other side. Some people refer to inband as the real tones and 2833 as not inband because it's not the tones. So the one you have to look out for is people who call 2833 inband and do not clarify that it's inband packetized according the RFC2833

The one that is not inband for sure is INFO (which has been dropped from the standard in favor of some ridiculous SUBSCRIBE based xml exchange)

Like all things in SIP and anything else that comes with an RFC even if you know the answer you can't rely on trusting that answer because the real world will do whatever it wants and invalidate you. =D

On Thu, May 6, 2010 at 10:36 AM, Madovsky <infos@madovsky.org> wrote:

HI,

is rfc2833 inband or outband ? is it only event or mixed event and sound ?

I'm confused after read articles on this subject

Thx

F

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