i found the following statement on freeswitch wiki: "*DTMF intercept w/ DTMF detection, removal and regeneration* Detect DTMF using Goertzel and drop samples identified as containing DTMF tones. Regenerate the detected DTMF tones on the opposite leg. *This AFAIK is the only DTMF intercept mode supported by FreeSWITCH ATM.**"* according to this can we convert outband(rfc2833) dtmf to inband dtmf? On Mon, Jan 26, 2015 at 3:26 PM, huseyin kalyoncu <hkalyoncu@gmail.com> wrote:
hello
first i want to thank the developers and contributors of this amazing product. we have been using freeswitch for almost 4 years without a major problem.
i have a question regarding inband dtmf. we have receiving calls from telco using dtmf rfc2833. most of outgoing calls also dtmf rfc2833. but we have a new outgoing profile which is behind a firewall. we did not make a successful call with transport UDP. so we set the transport to TCP and now we have successful calls but the only problem is with dtmf. when we set the dtmf to rfc2833 for this profile, we saw that dtmf packets do not arrive correctly to outgoing destination. when we dig up the problem we realized that there is always a time skew on dtmf packets. for this reason we tried to set dtmf inband for this particular outgoing profile. to accomplish this we used start_dtmf_generate just before the bridge action. but this time no dtmf package arrive at destination. is this dtmf conversion (from rfc2833 to inband) even possible? what should be the correct configuration to achieve this?
thanks huseyin