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Also, Andorid now supports SIP in the native dialer client and it works over wifi and cellular data, so you don't even have to install anything extra to get it

Also, Andorid now supports SIP in the native dialer client and it works over wifi and cellular data, so you don't even have to install anything extra to get it working on an android phone.

pdx 13y ago
Android can support SIP protocol in the native dialer, but most phones I've looked at do not have SIP in the dialer they ship with the phone. If you have a Nexus 4, it does support SIP, but your audio quality is usually terrible in a real world, on the street situation, where there is background noise. I have had no end of complaints, regarding the audio quality on my Nexus 4, from people on the other end of the phone call. Finally, after much grinding and nashing of teeth, and assuming I had bad hardware, I finally found the following thread. http://forum.xda-developers.com/showthread.php?t=2228361 http://forum.xda-developers.com/showthread.php?t=2228361 Quoting from the thread SIP is unusable on the Nexus 4 because the device doesn't provide an AcousticEchoCanceler[1], AutomaticGainControl[2] or NoiseSuppressor[3]. Additionally, the VOICE_COMMUNICATION[4] audio source designed for VoIP applications returns the same audio as if the application asked for raw microphone data, which is completely unusable for VoIP calls. This has been a source of great frustration to me, since I run my own FreeSWITCH installation, and wanted to use it via my Nexus 4. At this point, I am forced to go back to non-VoIP.
- rsync 13y ago
  I've been watching that microphone issue for a while now - is there no hope of applying those quality functions to the device so that SIP usage would be bearable ?
  - Zigurd 13y ago
    These can't be added "in the aftermarket." They have to be baked into the build and provided by the OEM.
- Zigurd 13y ago
  Yes, this is true: SIP is in Android but unless you have CPU-based AEC AGC, etc., which is for the OEM to license, and nobody worked this out with LG for the Nexus 4, it will sound like crap. I'm still waiting for 4.3 so I can't say if this has been improved.

Also, Andorid now supports SIP in the native dialer client and it works over wifi and cellular data, so you don't even have to install anything extra to get it working on an android phone.

pdx 13y ago

Android can support SIP protocol in the native dialer, but most phones I've looked at do not have SIP in the dialer they ship with the phone. If you have a Nexus 4, it does support SIP, but your audio quality is usually terrible in a real world, on the street situation, where there is background noise. I have had no end of complaints, regarding the audio quality on my Nexus 4, from people on the other end of the phone call. Finally, after much grinding and nashing of teeth, and assuming I had bad hardware, I finally found the following thread. http://forum.xda-developers.com/showthread.php?t=2228361 http://forum.xda-developers.com/showthread.php?t=2228361 Quoting from the thread SIP is unusable on the Nexus 4 because the device doesn't provide an AcousticEchoCanceler[1], AutomaticGainControl[2] or NoiseSuppressor[3]. Additionally, the VOICE_COMMUNICATION[4] audio source designed for VoIP applications returns the same audio as if the application asked for raw microphone data, which is completely unusable for VoIP calls. This has been a source of great frustration to me, since I run my own FreeSWITCH installation, and wanted to use it via my Nexus 4. At this point, I am forced to go back to non-VoIP.

rsync 13y ago
I've been watching that microphone issue for a while now - is there no hope of applying those quality functions to the device so that SIP usage would be bearable ?
- Zigurd 13y ago
  These can't be added "in the aftermarket." They have to be baked into the build and provided by the OEM.
Zigurd 13y ago
Yes, this is true: SIP is in Android but unless you have CPU-based AEC AGC, etc., which is for the OEM to license, and nobody worked this out with LG for the Nexus 4, it will sound like crap. I'm still waiting for 4.3 so I can't say if this has been improved.