[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Linphone-users] Detect audio input for DTMF in linphonec to dial fr
Re: [Linphone-users] Detect audio input for DTMF in linphonec to dial from proxy
Tue, 16 May 2006 10:33:12 +0200
It is possible to integrate a dtmf detector in linphone/linphonec.
It's not easy. You have to create a MSFilter to scan for dtmfs (I hope you
have signal processing skills), and put it in the stream defined in
mediastreamer/audiostream.c after the decoder.
Le Lundi 15 Mai 2006 03:40, Raju Abhyankar a écrit :
> I have installed Linphonec (console version)on an ARM
> based system. I can register with a proxy and then use
> a keyboard to place calls to extensions in this proxy.
> I am trying to create a ATA or "Analog telephone
> adapter" type device and so would not have a computer
> keyboard in such a setup. Instead I would now connect
> a regular analog telephone via a SLIC chip to the ARM
> board. The issue is now once the ARM based system
> registers with the proxy, to dial say an extension 0
> of this proxy, I can only signal via DTMF tones from
> the phone and they would be carried along with the
> audio signal coming also on the "line in" or
> microphone channel. This is because the phone has a
> dial pad and it sends DTMF tone along with the audio.
> The question is, is there a way for linphonec (console
> version) to detect and decode "in audio band" DTMF and
> then generate a call to extension using the detected
> DTMF? If some one has such a solution or a possible
> answer please let me know.
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> Linphone-users mailing list