Update VoIP SIP SDK for Android

Please download our latest VoIP SIP SDK for Android.

Change log:

– Redesigned internal service implementation. Now it’s running in background and updates registration.
When received incoming call service notifies app via sending broadcast message.
Service continues running even after removing app from recent apps.

– Added ability to record audio in AAC format;
– Added code, which handles video windows rotation in runtime;
– Added H263 codec;
– User manual documentation updated.