Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uunet!microsoft!peterco
From: peterco@microsoft.UUCP (Peter COOK)
Newsgroups: comp.protocols.iso
Subject: X.500/200 PresentationAddress
Keywords: X.500, XOM, XDS, X.200, Presentation Address
Message-ID: <59827@microsoft.UUCP>
Date: 13 Dec 90 23:17:30 GMT
Distribution: na
Organization: Microsoft Corp., Redmond WA
Lines: 19

Can anyone point me at the relevant X.200 section where I can find
out what the format of a presentation address is.  X.500 defines it
as:

	PresentationAddress	::=	SEQUENCE
		pSelector	[0]	OCTET STRING OPTIONAL,
		sSelector	[1]	OCTET STRING OPTIONAL,
		tSelector	[2]	OCTET STRING OPTIONAL,
		nAddresses	[3]	SET SIZE(1..MAX) OF OCTET STRING

It is supposed to specify "a presentation address associated with an object
representing an OSI application entity".  What I would like to understand is,
are there any standard representations for a pSelector, sSelector, tSelector,
or nAddress?  OCTET STRING seems to be a bit too ambiguious to be meaningful.
Do I just throw anything in these things or are there de-facto standard 
representations?  What is "MAX" here?

Thanks in advance,
Peter Cook	..uw-beaver!microsoft!peterco