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HomeHomeDiscussionsDiscussionsMizuDroid Andro...MizuDroid Andro...No incoming DTMF-Tones from Speaker/Headset at Client.No incoming DTMF-Tones from Speaker/Headset at Client.
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6/21/2020 12:28 PM
 

Hello,

I´m using Mizudroid (v3.2.2) installed on a Tablet with Android 7 running on it. The App works fine and I have no Problems with establishing Connections and Calls over my Network. (LAN/WLAN)

My Constellation is a Fritz-Box 7490 with SIP-Server , the App Mizudroid on a Tablet, with a DTMF-Decoder-Circuit (Relay-Board) wired on the 3,5mm Klinke Headset-Connector. The DTMF-Setting is: "Inband", the preffered Audio-Codec is: "G711a", and all Audio-Options are set to off (Echo-Cancelling, AGC...)

 

My special-Problem is that the DTMF-Tones received by the Softphone Mizudroid on the Tablet are not coming as Tone from the Speakerport or Headset. So my Relay-Board does not get the Tone to Decode!

But the DTMF-Tones I am sending from another Phone to the App are emitted! and Mizudroid even Receives the Signal and Displays for example : "DTMF-Tone received:*"

So the Problem is not the DTMF-Connection itself , but the Tone is not coming from the Speker , only a silent Crrrrckk is to hear.

I have played with the Codecs and DTMF-Settings on both Clients in many Combinations, but I cant get to solve my Problem.

 

 

I hope you can help me with my Problem, maybe its only one Click in the Settings.

 

 

 

Best Regards from Germany, and stay Healthy.                                                                        Carsten Steding

 
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6/23/2020 6:19 AM
 
The most important thing would be to set the DTMF sending method to the desired (working) format in the MizuDroid setting.

There are 3 ways to send DTMF:
SIP INFO
NTE (Named Telephone Events as specified in RFC 2833 and RFC 4733)
In-Band (DTMF audio tones in the RTP stream)

It might be possible the MizuDroid is sending by default in a format which is not supported by your server.
 
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