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The Basic Tree

Global naming tree, top levels
In ASN.1, an OBJECT IDENTIFIER is specified using the following syntax, eg:
Document-Type-Name ::=
    OBJECT IDENTIFIER
fTAM-1 Document-Type-Name ::=
    { 1 0 8571 5 1 }
The textual values (Object Descriptors) may also be used, and mixed, where no confusion can arise, eg:
internet OBJECT IDENTIFIER ::=
    { iso org(3) dod(6) 1 }
or even just:
{ internet }
For more information on ASN.1, you might care to look at the ASN.1 home page
The tutorial for this lecture is Tutorial #15.
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