OSI PICS Manual

ISO 8823 for OSI/AS
Tandem OSI PICS Manual–135046
10-6
B.3 Supported Functional Units
B.3 Supported Functional Units
B.3.1 Guidance for Completion
This section defines the functional units supported for which conformance is claimed.
The D column reflects the definitions and specifications in ISO 8823. Each entry in this
column is chosen from the following list:
The U column is reserved for future use.
The I column describes the actual capabilities of the implementation and shall be
completed by the supplier using a symbol chosen from the following list:
B.3.2 Functional Units
In this table, session functional units are identified with (S).
Symbol Meaning
— Not applicable
m Mandatory
n Mandatory negotiable
on Optional negotiable
o Optional
p Passed through from session unrestricted
Symbol Meaning
X Item is not implemented
I Item is implemented (subject to value qualifications)
— Item is not applicable
R Item is implemented and must also be implemented in the peer for interworking to be
possible
Ref Functional Unit Code D U I
1 Kernel K m R
2 Presentation Context Management CM o X
3 Presentation Context Restoration CR o X
4 Negotiated Release (S) NR o I
5 Half-Duplex (S) HD o I
6 Duplex (S) FD o I
7 Expedited Data (S) ED o X
8 Typed Data (S) TD o I
9 Capability Data Exchange (S) CD o I
10 Minor Synchronize (S) SY o I
11 Major Synchronize (S) MA o I