Screen Goes Blank On Incoming Calls

[GoogleCodeExporter]

This may be same as in part 2 of issue 1028

I stopped using SIPDROID v3 because of this problem about 6 months ago but 
thought it might be worth re-installing to see if the problem remains, it does. 
The problem is that as soon as an incoming VOIP call the screen goes blank and 
it is impossible to accept the call. I have noted this does occur occasionally 
when I get a GSM call.

This problem started at some point in time after I first started using SIPDROID 
so I assume it has been caused by some update, new app. install or a change in 
settings.

What steps will reproduce the problem?
1. Ring the PBXES extension from an outside line

What is the expected output? What do you see instead?
Expected Out Come - options to accept call
WHat I see - A blank screen

What version of the product are you using? On what device/operating system?
V3
Galaxy Nexus, Android 4.2.2, Kernel 3,0.31-g9f818de

Which SIP server are you using? What happens with PBXes?
PBXES

Which type of network are you using?
WiFi

Please provide any additional information below.

Original issue reported on code.google.com by neuros...@gmail.com on 3 Jul 2013 at 8:07

[GoogleCodeExporter]

I have tested further and found that if I disable WiFi to force connection to 
PBXES via GSM 3G then the screen does not go blank but SIPDROID does not appear 
to allow me to accept call. 

Original comment by neuros...@gmail.com on 3 Jul 2013 at 8:36

[GoogleCodeExporter]

Have just spotted the release 3.1 and the issue associated with that however I 
have just test v3.1 and it does exactly the same.

Original comment by neuros...@gmail.com on 3 Jul 2013 at 8:47