call rings but hear nothing

[GoogleCodeExporter]

When I was on vodaphone, i could make and receive calls. I moved to the UK and 
put O2 in and now, when i call someone, I can hear it ring but neither the 
receiver nor I can hear the other speak.

I downloaded the software about three weeks ago from the android shop and am 
using it on a Galaxy S.

Any solutions suggested?

Original issue reported on code.google.com by reganand...@gmail.com on 24 Nov 2010 at 10:08

[GoogleCodeExporter]

You can try to activate STUN and ICE (it may solve media network routing 
problems). (See the FAQ wiki page to see how to do that)

However could also be something with O2 that simply block VoIP SIP traffic. 
I don't know the capabilities of this network, nor the things they allow you to 
do (technically and legally), but carriers in France for example just block 
this kind of traffic (technical blocking + legally prohibited). 

If they block, unfortunately, nothing can be done on the application side.

Original comment by r3gis...@gmail.com on 24 Nov 2010 at 10:14

[GoogleCodeExporter]

I tried to turn on stun and ice. with ICE on, I don't notice any difference. 
When i turn on STUN, I don't even hear the phone ring when I dial a number 
anymore. Before i could hear it ring when I called someone, but could not hear 
them when they answered. Now I hear neither.

Note that I've turned on STUN, but done nothing to the STUN server setting 
since I understand that if you leave it blank, it has a default.

Second question: When I use it over wifi, the audio is very choppy. Can that be 
improved?

Original comment by reganand...@gmail.com on 25 Nov 2010 at 12:13

[GoogleCodeExporter]

For stun, the default should be the counterpath stun server, if it's blank, 
stun does nothing. (So you can try with counterpath stun server or ekiga's 
one... or better if your sip provider give a stun server, you should use it.)
ICE without STUN activated does nothing interesting. So you should try with 
STUN (with a configured server) + ICE.

For choppy sound on wifi :
Can be due to two things :
1- the HTC PSP bug (when screen goes off, wifi packets are not received in real 
time), a workaround is to activate Keep awake while in call in settings > user 
interface (before turn on expert settings mode in settings > (press menu key) 
Expert mode.
2- low bandwith and use of a codec that consume a lot of bandwith. You should 
try to allow only GSM codec for example (in settings > media > codec ,long 
click to deactivate other codecs). Note that your sip provider must support his 
codec else call will simply fail. (A good codec is iLBC, low bandwidth and good 
quality, but sip providers doesn't support it in general).
Maybe it can also help on 3G to use a low bandwidth codec such as GSM codec.

Original comment by r3gis...@gmail.com on 25 Nov 2010 at 12:22

[GoogleCodeExporter]

Original comment by r3gis...@gmail.com on 7 May 2011 at 12:22

• Changed state: Obsolete