Call Waiting Documentation?

There seemed to be no documented material on call waiting regarding asterisk.

Does anyone know where to find said documents relating to call waiting beep or call waiting in general?

What kind of beep are you reffing to ? There is no call waiting beep in Asterisk like that have in Europe or Aisa (if you call some one that is on the phone). If you want it you can try putting out a bounty. If you place some one on hold they will hear music.