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From: sch@sequent.UUCP (Steve Hemminger)
Newsgroups: comp.protocols.misc
Subject: Re: List of X.25/X.29 protocol IDs wanted!
Message-ID: <36202@sequent.UUCP>
Date: 5 Jun 90 15:31:27 GMT
References: <j6m91bblf@tmsoft.uucp>
Reply-To: sch@crg3.UUCP (Stephen Hemminger)
Organization: Sequent Computer Systems, Inc
Lines: 17

Get a copy of ISO TR 9577
	"Protocol identification in the network layer"

For X.25 the secondary protocol identifier (1st byte of call user data) is
used.  The table of assigned values is:

Octet	Protocol
hex
00	ISO 8473 (Inactive subset)
01	CCITT X.29
02	Reservied by CCITT T.70
03-3F	Reserved by ISO 8073/Add1
81	ISO 8473
82	ISO 9542
86	ISO 10030
83	ISO 8878 Annex A
FF	Extension