HP X.25/9000 User's Guide HP-UX 11i v3 (5900-1523, August 2011)

Packet codes
RESTART packet codes
When the system receives a RESTART INDICATION packet, the received CLEAR INDICATION or
RESET INDICATION packet contains a cause code of 0 and the diagnostic code used in the
RESTART.
RESET/CLEAR packet codes
The system may generate a RESET/CLEAR because of an error, lack of memory, or other condition.
When this occurs, a RESET/CLEAR INDICATION is delivered to the application and a RESET/CLEAR
REQUEST packet is sent to the network. The cause code is always zero as dictated by ISO in the
IS-8208 standard, and the diagnostic is one of the codes in this appendix. Both the REQUEST and
the INDICATION carry the same cause/diagnostic combination.
X.25 Diagnostic messages
Table 49 No additional information
ExplanationISO DescriptionDiagnostic
DATA packet received from network with P(S) invalid or outside of
allowable window.
Invalid P(S).1 (RESET)
DATA packet received from network with P(R) invalid.Invalid P(R).2 (RESET)
Table 50 Packet type invalid
ExplanationISO DescriptionDiagnostic
Invalid packet received with interface in state R1 (packet level ready).
RESTART REQUEST is sent on network.Invalid packet is probably
RESTART CONFIRMATION.
Packet type invalid for
state R1.
17 (RESTART,
CLEAR, RESET)
Invalid packet received on VC in state P1 (Ready).Packet type invalid for
state P1.
20 (CLEAR)
Invalid packet received on VC in state P2 (DTE CALL REQUEST).Packet type invalid for
state P2.
21 (CLEAR)
Invalid packet received on VC in state P3 (DCE Incoming Call).Packet type invalid for
state P3.
22 (CLEAR)
Invalid packet received on VC in state P4 (Data Transfer).Packet type invalid for
state P4.
23 (CLEAR, RESET)
Invalid packet received on VC in state P5 (Call Collision).Packet type invalid for
state P5.
24 (CLEAR)
Invalid packet received on VC in state P6 (DTE Clear Request).Packet type invalid for
state P6.
25 (CLEAR)
Invalid packet received on VC in state D1 (Flow Control Ready).Packet type invalid for
state D1.
27 (RESET)
Invalid packet received on VC in state D3 (DCE Reset Indication).Packet type invalid for
state D3
29 (RESET)
152 Diagnostic messages