I need advise on the programming structure of my application QtPhone...

http://qtphone.sf.net

I'm working out the design for the code flow.

If you have an expertise in the matter, or have any good suggestions or direction, please let me know.

I'm specifically talking about breaking up the different functional areas into .cpp files.

This areas include...

Main

V.92 voice mai
V.92 telephone
V.92 Caller ID

ISDN voice mai
ISDN telephone
ISDN Caller ID

xDSL voice mai
xDSL telephone
xDSL Caller ID

VoIP voice mai
VoIP telephone
VoIP Caller ID

Settings

Security

Voice Activation

etc.