those webpages I am reviewing

http://www.tenouk.com/Module39.html

http://www.tenouk.com/Module42a.html

http://www.hardwaresecrets.com/article/How-TCP-IP-Protocol-Works-Part-2/435/3

http://www.redbooks.ibm.com/redbooks/GG243376/wwhelp/wwhimpl/js/html/wwhelp.htm

http://technet.microsoft.com/en-us/library/cc786128(v=ws.10).aspx

Mobile comm

http://wireless.arcada.fi/MOBWI/material/CN_7_3.html

still looking for protocol stack frame intro...