OSI/TS Management Programming Manual

ZX25-DIAAGCODE
Status SU Attribute Values
E–8 056786 Tandem Computers Incorporated
Table E-3. Diagnostic Field Codes (Page 6 of 6)
Diagnostic
Bits
87654321
Decimal
Value
Applicable
Packets (Note 1)
Higher Level Initiated 11110000 240 Rr, C, Re
disconnection - normal 11110001 241 C
disconnection - abnormal 11110010 242 C
disconnection - incompatible
information in user data
11110011 243 C
connection rejection - reason
unspecified (transient condition)
11110100 244 C
connection rejection - reason
unspecified (permanent condition)
11110101 245 C
connection rejection - quality of
service not available
(transient condition)
11110110 246 C
connection rejection - quality of
service not available
(permanent condition)
11110111 247 C
connection rejection - incompatible
information in user data
11111000 248 C
connection rejection - unrecognizable
protocol identifier in user data
11111001 249 C
reset - user resynchronization 11111010 250 Re
.......
11111111 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.