Article ID: 139636
Article Last Modified on 10/30/2006
APPLIES TO
- Microsoft Mail Gateway to X.400 3.0
- Microsoft Mail Gateway to X.400 3.2
This article was previously published under Q139636
SUMMARY
This article lists some of the acronyms that are seen when you view the X400MMDD.LOG file, where mmdd represents the month (mm) and the day (dd) the log was written when debug (-LD) was enabled.
MORE INFORMATION
Data Units
TPDU Transport Protocol Data Unit
TSDU Transport Service Data Unit
NSDU Network Service Data Unit
Types of Transport Protocol Data Unit
CR TPDU Connection Request TPDU
CC TPDU Connection Confirm TPDU
DR TPDU Disconnect Request TPDU
DC TPDU Disconnect Confirm TPDU
DT TPDU Data TPDU
ED TPDU Expedited Data TPDU
AK TPDU Data Acknowledge TPDU
EA TPDU Expedited Acknowledge TPDU
RJ TPDU Reject TPDU
ER TPDU Error TPDU
TPDU fields
LI Length Indicator (field)
CDT Credit (field)
TSAP-ID Transport Service Access Point Identifier (field)
DST-REF Destination Reference (field)
SRC-REF Source Reference (field)
EOT End of TSDU mark
TPDU-NR DT TPDU number (field)
ED-TPDU-NR ED TPDU number (field)
YR-TU-NR Sequence number response (field)
YR-EDTU-NR ED TPDU number response (field)
Time and associated variables
T1 Local retransmission time
N The maximum number of retransmission's
L Time bound on reference and sequence numbers
I Inactivity time
W Window time
TTR Time to try reassignment/resynchronization
TWR Time to wait for reassignment/resynchronization
TS1 Supervisory timer 1
TS2 Supervisory timer 2
MLR NSDU lifetime local-to-remote
MRL NSDU lifetime remote-to-local
ELR Expected maximum transit delay local-to-remote
ERL Expected maximum transit delay remote-to-local
R Persistence time
AL Local acknowledge time
AR Remote acknowledge time
Miscellaneous
TS-user Transport Service user
TSAP Transport Service Access Point
NS-provider Network Service Provider
NSAP Network Service Access Point
QOS Quality of service
The information above was extracted from The International Telegraph and Telephone Consultative Committee (CCITT), Recommendation X.224, Section 4, page 43. Please refer to Recommendation X.224 for a more in-depth definition and description.
For additional information on the X400MMDD.LOG, please see the following article in the Microsoft Knowledge Base:
86988 X400: How MTAs Initiate and Communicate
Additional query words: 3.00 3.20
Keywords: KB139636
