OSI PICS Manual

ISO 8571 for FTAM
Tandem OSI PICS Manual–135046
12-27
A.12 Expanded PDU Field Detail
A.12.4 Service Class Field Detail
A.12.5 Functional Unit Field Detail
State the functional units implemented in each service class.
5 Identity o No
6 Password o No
7 Location o No
Note. Implementation of access control without any of the above combinations is valid.
DI R
1 Transfer class o Yes Yes
2 Access class o Yes Yes
3 Management class o Yes Yes
4 Transfer and management class o Yes Yes
5 Unconstrained class o No No
Note. A conformant initiator is permitted to specify only those combinations defined in ISO
8571-3.
Service Classes
Functional
Units
Transfer Access Management
Transfer and
Management
Un-
constrained
DI RDI RD I RD I RDI R
1 Kernel m Yes Yes m Yes Yes m Yes Yes m Yes Yes m No No
2 Read (see Note
2)
c Yes Yes m Yes Yes — — — c Yes Yes m No No
3 Write (see Note
2)
c Yes Yes m Yes Yes — — — c Yes Yes o No No
4 File Access —— — mYesYes—— — —— — oNoNo
5 LimitedFile
Management
o Yes Yes o Yes Yes m Yes Yes m Yes Yes o No No
6 Enhanced File
Management
o Yes Yes o Yes Yes o Yes Yes o Yes Yes o No No
7 Grouping m Yes Yes o Yes Yes m Yes Yes m Yes Yes o No No
8 FADU Locking — — — o Yes No — — — — — — o No No
9 Recovery o No No o No No o No No o No No o No No
10 Restart o No No o No No o No No o No No o No No
Note 1: The recovery and the restart functional units are available only at the internal file service interface and should be
explicitly referenced only in the protocol.
Note 2: The “c” indicates that either or both of the read and write functional units are to be implemented in the particular
service class.
Combinations D R