Sending characters to phone call after call established

[cmweb]

Hello,

is there a chance to send characters (DTMF) after a call has been launched by the app and the connections has been established?

I found something with the SIP/VOIP library, but I don't know if that is the right direction, as I want it for standard GSM phone calls...!?

Best regards,

Carsten

 

[Erel]

I don't think that it is possible.

 

[cmweb]

Hello Erel,

on classic phones it is possible to dial and force the dialer to wait for connection and then continue to send tones. Like this:

012345,,,999

I also read that you can use P or W in the dial string to separate phone number and DTMF tones (instead of comma in my example above).

Unfortunately, that doesn't work from the app as the Android dialer dials 7 or 9 instead of P or W. And the comma just forces the dialer to wait just a few seconds before while dialing.

Is there a chance to pass a real P or W to the dial string?

Best regards,

Carsten

Gesendet von meinem GT-N7000 mit Tapatalk

 

[Erel]

The string is passes as is to the telephone service.
Android doesn't support it: Issue 1428 - android - feature request: sending DTMF tones over existing phone call to the far end - Android - An Open Handset Alliance Project - Google Project Hosting

 

[mattdarnell]

The string is passes as is to the telephone service.
Android doesn't support it: Issue 1428 - android - feature request: sending DTMF tones over existing phone call to the far end - Android - An Open Handset Alliance Project - Google Project Hosting

Just read that thread....it still doesn't seem possible, hard to believe.

Can you play a media file to the person on the other end of the line? I wrote an app to play a DTMF tone. When I am on a call only I hear the DTMF sound, not the person on the other line - is there a way to inject the sound into the audio stream?

-Matt

 

[Erel]

is there a way to inject the sound into the audio stream?

I'm pretty sure that it is not possible.