Fix timer call, dialtone, blocking bug.

src/audiobuffer.cpp

src/audiobuffer.h

src/audiodrivers.cpp

src/audiodrivers.h

src/audiodriversoss.cpp

src/audiodriversoss.h

src/audiortp.cpp

src/configurationpanelui.cpp

src/configurationpanelui.h

src/manager.cpp

src/manager.h

src/mydisplay.cpp

src/mydisplay.h

src/phonebookui.cpp

src/phonebookui.h

src/phoneline.cpp

src/phoneline.h

src/qtGUImainwindow.cpp

src/qtGUImainwindow.h

src/sip.cpp