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Audio don't work in 3G

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abolinhas

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Aug 13, 2011
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Hi,

I install the latest version of 3cx phone on my htc legend (android 2.2), If i connect my account through wifi I can make calls and the audio work great, but if I change to 3G, I can make a call but when the other person answers the call I can't hear any thing on both sides
 
Through what mobile provider? With 3CX PBX or a VoIP provider?
If it is working through WiFi, I would first off suspect the provider (the mobile one).
 
Try upgrading to Android 2.3 (some 2.2 releases are blocking VoIP over 3G, still you need to allow it).
I had similar issues with Samsung Galaxy, now is OK.

Regards
 
@leejor
I don't have a 3CX PBX I use a Draytek IPPBX 2820 and my voip provaider is Optimus Portugal

@eagle2
Ok, I will try upgrade to 2.3

Through a vpn over 3g the audio work very well
 
This should be a NAT problem (losing your audio packets (RTP) with your 3G provider, if works fine with a tunnel).
Depends on your IP PBX to be able to handle the case.

Regards.
 
what is the rtp port range that 3cx for android use?
 
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