🚀 go-pugleaf

       PERSONAL PROTOCOLS: WHERE DO THEY FIT IN THE BIG PICTURE

 
People have been asking me this question.  Personal protocols (such as
kermit, xmodem, ymodem, <banana>modem, tlink, sealink, <banana>link,
cis a, cis b, cis <banana>, etc..etc.(where banana = any thing)), where 
do they fit in the ISO reference model?

I say, well.   If you are calling a node over the
phone network, as opposed to a packet switching network, then they
represent the link layer protocol.  That is because they insure safe
data transfer over the logical link between the two calling points.
An example here is if you transfer data to or from a BBS.

But if you are calling a node over a packet switching network, then they
represent the transport layer.  That is because they insure end-to-end
error and flow control.  An example here would be transfering data with 
Compuserve over its proprietary net or over Telenet or Tymenet.  While
the link and network protocols are provided by the PSN, the protocol
you use provides the transport layer protocol.

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|Hamed Nassar               |Internet  : hxn8477%njitx.decnet@njitc.njit.edu |
|EE Department              |UUCP      : bellcore!argus!mars!nancy           |
|NJ Institute of Technology |CompuServe: 74000,130                           |
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