Zoiper ends calls after buying G.729 extension

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Previosly I had some problems with the quality of the sound, so I bought the G.729 extension to my app, but know my calls end after a 10-15 seconds. If I get called, there is no problem, but if I call, my call ends as said before.

My phone is a ZTE Blade v6 with Android 5.0.2

asked Feb 22, 2017 in Android by Rafael Morales Gambo (120 points)  
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What happens if you disable G729? If the call is setup, e.g. remote party answers, then the problem should not be related to the codec. If it is a codec problem call will not be setup.

The call is setup, but closes in seconds. I tried today inside my institution, and there was no problem, so I am testing again at home and will let you know.

1 Answer

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I'll try to summarize it here as an answer - Calls ending after certain amount of time - 10, 15, 30 or even 1 minute( could be even more) - would not be related to a codec. If there is a codec problem then the call will not setup at all, or in very rare cases lack audio. Probably in 99% of the cases where calls end after specific amount of time this means there is a NAT related issue. In such cases it is suggested to try altering settings as noted here https://www.zoiper.com/en/support/answer/for/android/11/SIP_-_No_audio_or_one_way_audio (except the Audio Driver). If possible, disabling SIP ALG features on routing devices could also help.

answered Feb 23, 2017 by Anton (3,950 points)  
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