X.25 Type Numbers

Last Updated
2007-08-30
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Registry included below

X.25 Type Numbers

Registration Procedure(s)
Not assigned by IANA
Reference
[N/A]
Note
ITU-T TSB defines the high order two bits of the first octet of call user
data as follows:

00 - Used for other ITU-T TSB recommendations (such as X.29)
01 - Reserved for use by "national" administrative
     authorities
10 - Reserved for use by international administrative authorities
11 - Reserved for arbitrary use between consenting DTEs
Available Formats

CSV
Call User Data (hex) Protocol Reference
01 PAD [Alain_Lanssiers]
C5 Blacker front-end descr dev [Alain_Lanssiers]
CC IP [RFC877][Alain_Lanssiers][ISO SC6/WG2 approved assignment in ISO 9577 (January 1990).]
CD ISO-IP [Alain_Lanssiers]
CF PPP [RFC1598]
DD Network Monitoring [Alain_Lanssiers]

People

ID Name Contact URI Last Updated
[Alain_Lanssiers] Alain Lanssiers mailto:alanssie&cisco.com