Computer Telephony
http://www.byte.com/art/9407/sec8/art1.htm
Whatever became of computer telephony?
http://udell.roninhouse.com/bytecols/2000-09-27.html

TAPI
http://www.oreilly.com/pub/a/oreilly/ask_tim/2000/telephony_1000.html
http://delphi.ktop.com.tw/topic.asp?TOPIC_ID=37410

google: modem help
翻翻看
http://www.modem-help.com/search.php?id=

CTI