Xerox WorkCentre Pro 423 Service Manual page 126

WorkCentre Pro 423/428
Table 4 Causes of SI Packet Disconnection (Cause)
Code value
01 Local terminal procedure error
03 Network congestion
07 Fault recovery
Table 5 Diagnostic Results of SI Packet (Diag)
Code Description
value
11 Packet level ready
12 Wait for complete
disconnection of all calls
21 Packet type unknown
26 Packet too short
Table 6 Causes of RI Packet Disconnection (Cause)
Code value
00, 80-FF Reset or restart request from remote terminal
01 Communication disabled by remote fault
03 Remote procedure error
05 Local procedure error
07 Network congestion
09 Remote terminal recovery
11 Protocol mismatch with remote terminal
1D Network fault
Table 7 Diagnostic Results of RI Packet (Diag)
Code value Description
01 Invalid information
02 Invalid information
11 Packet level ready
12 DTE restart request
1B Flow control ready
1C RF wait
21 Packet type unknown
Description
Code value Description
27 Packet too long
29 Illegal SQ, SI, or SF packet
34 Timeout in SF packet wait
00 Other
Description
Code value Description
23 Packet type unknown (at PVC
communication)
26 Packet too short
27 Packet too long
29 Illegal SQ, SI, or SF packet
2B Verification packet not permitted
2C Packet not permitted
00 Other
2-94
03/02
2.3.2.5.2 Session Protocol (Layer 5 of B channel)
For the normal sequence of the Session protocol, see "Session" in the B-channel sequence.
A CSE signal is sent at the end of communication in the Session layer. If communication is
suspended, a CSA signal is sent. The cause of a fault can be confirmed by analyzing the
session end parameter information contained in this signal.
Table 8 Signals Used in Session Protocol (Layer 5 of B channel)
Signal Meaning
CSS Session start indication
CSE Session end indication
CSA Session suspend indication
CDS Document start indication
CDE Document end indication
CDCL Document function list
indication
RSSP Session start affirmation
RSSN Session start negation
RSEP Session end affirmation
RSAP Session suspend affirmation -
RDCLP Document function list
affirmation
RDEP Document end affirmation
CDPB Document page boundary
indication
RDPBP Document page boundary
affirmation
RDPBN Document page boundary
negation
CDUI Document user info
CSCC Session change control
indication
CSUI Session user information
RSCCP Session control change
affirmation
RSUI Session user information
CDR Document resynchronous
indication
CDD Document discard indication 32 01 (reason) *See Table 10
CHAPTER 2 TROUBLESHOOTING
Level 2 Troubleshooting
Description
Originating terminal ID and date and time
information*See 2.3.2.5.2-2
11 01 (session end parameter)*See Table 9
11 01 (session end parameter)*See Table 9
(Explanation omitted)
Checkpoint reference information *See 2.3.2.5.2-1
(Explanation omitted)
Terminating terminal ID and date and time
information *See 2.3.2.5.2-2
(Explanation omitted)
-
(Explanation omitted)
Checkpoint reference information *See 2.3.2.5.2-1
Checkpoint reference information *See 2.3.2.5.2-1
(Explanation omitted)
32 01 (reason) *See Table 10
-
-
(Explanation omitted)
-
-
32 01 (reason) *See Table 10