Dear guys
While running Linphone 1.0.5 for iphone with background mode turned on,
when the application is running in background, it can’t receive incoming calls.
The phone still rang, but when the ‘answer’ button is pressed, it looks like
that the call is connected with the timer start counting from 00:00, but
the call is not really connected. My desktop phone, which is supposed to
ring simultaneously, continues to ring.