(Transport Protocol Class 0 to Class 4) The grades of OSI transport layers from least to most complete and specific. TP4 is a full connection-oriented transport protocol.
"TP0-TP4." YourDictionary, n.d. Web. 23 June 2018. <http://www.yourdictionary.com/tp0-tp4>.
TP0-TP4. (n.d.). Retrieved June 23rd, 2018, from http://www.yourdictionary.com/tp0-tp4
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