VoIP Mailing List Archives

[gkuri at ieee.org]

shoot me if I'm on the wrong track, but is it possible to use the
start_dtmf app to do inband dtmf detection and "convert" the inband DTMF
to rfc2833, as opposed to using the dtmf detection on a Linksys or
Grandstream ATA?

the reason I ask is the dtmf detection on these ATAs seems to falsely
catch dtmf tones during certain conversations and falsely inject a dtmf
tone into the stream (I believe the appropriate term is "talk off"). So
I was thinking of setting the ATAs to do inband DTMF rather than the
current rfc2833 setting, and having FS do the more reliable dtmf
detection instead?

Thanks,
Gabe

_______________________________________________
Freeswitch-users mailing list
Freeswitch-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org

[brian at freeswitch.org]

That is the purpose of start_dtmf to detect it inband and convert it
to 2833. Unless you disabled 2833.

/b

On Mar 13, 2009, at 3:36 PM, Gabriel Kuri wrote:

[gkuri at ieee.org]

thanks, I'll give it a try.

I'm assuming this app requires a reasonable amount of additional
processing power, particularly on a box with several hundred active
channels, as it's basically snooping the rtp stream looking for inband
dtmf tones?

Gabe

Brian West wrote: