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B-2 SmartSwitch 1800 4.0 User Guide, Rev 01
Reset Causes
An SVC or PVC may be reset when an error occurs during data transmission. The reset
causes transmission to be re-synchronized, and informs the user that some data might
have been lost. The reset cause sent in a Reset packet provides a high-level indication
of why the call was reset.
From DCE From DTE
Hex.
Dec. Hex. Dec. Description
00 00 80 128
DTE originated
01 01 81 129
Out of order (PVC only)
03 03 83 131
Remote procedure error
05 05 85 133
Local procedure error
07 07 87 135
Network congestion
09 09 89 137
Remote DTE operational (PVC only)
0F 15 8F 143
Network operational (PVC only)
11 17 91 145
Incompatible destination
1D 29 9D 157
Network out of order (PVC only)
Restart Causes
When a port is restarted, all active SVCs and PVCs through the port are cleared. The
restart cause sent in a Restart packet provides a high-level indication of why the port
was restarted.
From DCE From DTE
Hex.
Dec. Hex. Dec. Description
00 00 80 128
Local procedure error
03 03 83 131
Network congestion
07 07 87 135
Network operational
7F 127 FF 255
Registration/cancellation confirmed
Diagnostic Codes
X.25 Codes
These diagnostic codes are generated by the X.25 network in Clear, Reset, and Restart
Indication packets, as well as Registration Confirmation and diagnostic packets:
Hex.
Dec. Description
00 00
No additional Information
01 01
Invalid P(s)
02 02
Invalid P(r)
10 16
Packet Type Invalid
(Restart Transfer Phase)
11 17
Packet type Invalid for State r1 Packet Level Ready
12 18
Packet type Invalid for State r2 DTE Restart Request
13 19
Packet type Invalid for State r3 DCE Restart Indication
(Call Setup Phase)
14 20
Packet type Invalid for State p1 Ready
15 21
Packet type Invalid for State p2 DTE Waiting