Hi,
congratulation! ZoiPer is a fine piece of software. I like it. Today I was able to configure ZoiPer on iOS 7.1.2 (iPhone 4) to a AVM router 7490 (latest OS: 06.51). I still bought also the additional audio and video codecs for ZoiPer.
I played around with audio codecs. I disabled one after another, until only G.729 was switched on, which I'd like to prefer. Athough the AVM router 7490 shall support G.729 (it is there called G.729a see: http://en.avm.de/service/fritzbox/fritzbox-7490/knowledge-base/publication/show/1008_Voice-codecs-for-Internet-telephony-supported-by-FRITZ-Box/ ) ZoiPer fails when trying to dial. Error message: Not Accacceptable Here (488).
Is it possible to fix this non-compatibility by ZoiPer?
Thank you for looking onto this matter.
Hello,
Error 488 is returned from the server. Check with your VoIP provider for more details.
You are right, as the provider is my router = VoIP Server. The German firmware version of the AVM FB 7490 has sadly the G.729 not activated :-(
see: http://avm.de/service/fritzbox/fritzbox-7490/wissensdatenbank/publication/show/1008_Unterstuetzte-Sprach-Codecs-bei-Internettelefonie/
Also elder hints to activate it unofficially seems nowadays no more possible (Telnet on the router is deactivated), unless to install the international firmware version.