Packet Switching and X.25 Networks. APPENDIX B 19
B 2.17.2 Clear Cause and Diagnostics
Clearing Cause byte
high order low order
Clear request originated from DTE
0 0 0 0 0 0 0 0
Number busy
0 0 0 0 0 0 0 1
Facility request is invalid
0 0 0 0 0 0 1 1
Network congestion
0 0 0 0 0 1 0 1
Out of Order
0 0 0 0 1 0 0 1
Access is barred
0 0 0 0 1 0 1 1
DTE not obtainable
0 0 0 0 1 1 0 1
Remote Procedure Error
0 0 0 1 0 0 0 1
Local Procedure Error
0 0 0 1 0 0 1 1
RPOA Out of Order
0 0 0 1 0 1 0 1
Reverse Charging acceptance has not been agreed with network
0 0 0 1 1 0 0 1
administration
Destination is not compatible with this call
0 0 1 0 0 0 0 1
Fast Select acceptance has not been agreed with the network
0 0 1 0 1 0 0 1
administration
When the Clearing Cause is zero one of the DTEs has generated a Clear request. In this case the
Diagnostic Code is generated by the DTE and is passed unchanged to the remote DTE. Other
Clearing Causes are generated by the network, and the standard Diagnostic Codes shown in
section 2.17.4 of this appendix are used.
B 2.17.3 Restart Cause and Diagnostics
Restart Cause field
high order low order
Local Procedure Error
0 0 0 0 0 0 0 1
Network congestion
0 0 0 0 0 0 1 1
Network Operational
0 0 0 0 0 1 1 1
Restarting causes are generated by the network, and the standard Diagnostic Codes shown in
section 2.17.4 of this appendix are used.

