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Hide dtmf tone while dialing
There is no way for developers to do this via public APIs. Unfortunately, Android doesn't handle DTMF control very well. For example, there's a two year old feature request to allow a user to send DTMF controls at an arbitrary time during a call; it's been abandoned. As you know, using ACTION_CALL or ACTION_DIAL and doing <number>|,;|<tones> will send DTMF tones directly after a call is connected, but that's where user control over the issue stops. Any additional controls, such as sending additional tones or muting the tone response to the handset, are handled by internal APIs, notable com.android.internal.telephony. Of note is the stopDtmf() method, which would possibly do what you're looking for, except that it's internal and may not have consistent behavior. Here's what t

Categories : Android

How to Control DTMF volume programmatically android
None of the (AudioManager.STREAM_*) volumes go to 100 (int). A valid stream volume for setStreamVolume(...) is between 0 and getStreamMaxVolume(int streamType). Each stream can have a different max volume int, like 8, 10, or 16 from what I remember. Might even be different on different devices. I hope that is enough to point you and future visitors in the right direction.

Categories : Android

VXML record processing dtmf termchar
As you mentioned, dtmfterm = false may be the reason. You can get the grammar matched character by accessing application.lastresult$. Refer http://www.w3.org/TR/voicexml20/#dml2.3.6 Agree with @kevin that in IVRs, a lot of things depend on the vendor itself (using a grammar in record is itself optional in the spec)

Categories : Misc

Java (J2SE) DTMF tone detection
I don't know enough to help you out, but have you seen the DTMF implentation in TarsosDSP on github?

Categories : Java

SIPp with multiple DTMF signals causing problems
To answer my question, I used this patch to send DTMF in-band. http://sourceforge.net/p/sipp/patches/50/ No need to convert from wav to pcap. Also the invite message body has these params: o=root 1821 1821 IN IP4 [remote_ip] s=session c=IN IP4 [remote_ip] t=0 0 m=audio [media_port] RTP/AVP 96 0 a=rtpmap:18 G711a/8000 a=silenceSupp:on - - - - a=ptime:20 a=sendrecv a=rtpmap:0 PCMU/8000 a=rtpmap:96 telephone-event/8000 a=fmtp:96 0-16

Categories : Misc

VXML a common handler for all forms for a generalized DTMF input
What you are referring to are often called universal or global grammars. You can implement them using the link element. You can set the scope for this grammar at the application, document or form level. For more on universal grammars look at this article. And you can find more about the link element here.

Categories : Misc



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