OSI/TS Configuration and Management Manual

X.25 Status Code Tables
OSI/TS Configuration and Management Manual—424831-001
B-9
Diagnostic Field Codes
. . . . . . . .
1 1 1 1 1 1 1 1 255
NOTE 1: A given diagnostic need not apply to all packet types. The packet type(s)
to which each diagnostic may apply is shown:
D = DIAGNOSTIC
Rr = RESTART REQUEST and INDICATION
C = CLEAR REQUEST and INDICATION
Re = RESET REQUEST and INDICATION
Rg = REGISTRATION CONFIRMATION
NOTE 2: Not all diagnostics need be implemented but those used are as coded in
the table. The first diagnostic in each grouping is a generic diagnostic and
can be used in place of the more specific diagnostics within the grouping.
The decimal 0 diagnostic code can be used in situations where no additional
information is available (e.g., where the more specific diagnostics are not
implemented).
NOTE 3: Diagnostics 224 through 255 support the OSI Network Service Definition.
NOTE 4: In certain situations, multiple diagnostic codes may apply. For example, if
a timer has expired and a (RESTART, CLEAR, OR RESET) REQUEST
packet is to be retransmitted, then the DTE may use the diagnostic code
associated with the original error or the corresponding “timer expired”
diagnostic code.
NOTE 5: This diagnostic may also apply to a maintenance action within a national
network.
Table B-3. Diagnostic Field Codes (Page 1 of 6)
Diagnostic
Bits
8 7 6 5 4 3 2 1
Decimal
Value
Applicable Packets
(Note 1)