Siemens PROFINET CP 343-1

References
B.9 Other topics
CP 343-1
Manual, 10/2012, C79000−G8976−C201-07
73
/20/
RFC 1006 (ISO Transport Service on top of the TCP Version: 3)
Request For Comment
http://www.ietf.org (http://www.ietf.org
)
/21/
RFC 793 (TCP)
http://www.ietf.org (http://www.ietf.org
)
/22/
RFC 791 (IP)
http://www.ietf.org (http://www.ietf.org
)