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MIL-STD-188-172 Base Document:1989
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INTEROPERABILITY STANDARDS FOR INFORMATION & RECORD TRAFFIC EXCHANGE MODE II
03-02-2004
1 SCOPE
1.1 Purpose
1.2 Scope
1.3 Application
1.4 System standards and design objectives
1.5 Tailoring
2 APPLICABLE DOCUMENTS
2.1 Government documents
2.1.1 Standards
2.2 Order of precedence
2.3 Source of documents
3 DEFINITIONS
3.1 Definitions of terms
3.1.1 Character set
3.1.2 Data rate
3.1.3 Intercharacter interval
3.1.4 Mode I
3.1.5 Mode II
3.1.6 Mode V
3.1.7 Mode VI
3.1.8 Mode VII
3.2 Definitions of abbreviations and acronyms
4 GENERAL REQUIREMENTS
4.1 Mode II channel coordination procedure
4.2 Duplex operation
4.3 Character codes
4.3.1 CONUS eight-bit character code
4.3.2 OCONUS eight-bit character code
4.3.3 IA No 2
4.4 Character transmission
4.5 Message format
5 DETAILED REQUIREMENTS
5.1 Mode II channel coordination procedure
5.2 Character codes
5.2.1 Eight-bit coded environment
5.2.2 IA No 2 code
5.3 Character structure
5.3.1 Eight-bit coded environment
5.3.1.1 Ten-bit structure
5.3.1.2 Eleven-bit structure
5.3.2 IA No 2
5.3.2.1 Seven-bit structure
5.3.2.2 Eight-bit structure
5.4 Message framing and control
5.4.1 SOM sequence
5.4.1.1 IA No 2
5.4.2 EOM sequence
5.4.3 CANTRANS sequence
6 NOTES
6.1 Mode II throughput calculations
6.1.1 Example
6.1.2 Tabulated transmission times
6.2 Key word listing
FIGURES
1 Mode II data codes-eight bit coded environment
2 Mode II data codes - IA No 2
3 Mode II, seven-bit IA No 2 code-transmission
sequence for SOM
4 Mode II, seven-bit IA No 2 code-transmission
sequence for EOM
5 Mode II, seven-bit IA No 2 code-transmission
sequence for CANTRANS
TABLES
Table I Mode II CONUS eight-bit character set-odd
number of logical 1 bits per character
Table II Mode II OCONUS eight-bit character set-even
number of logical 1 bits per character
Table III International Alphabet No 2 (1A No 2) -
American version
Table IV Mode II transmission in time in seconds for a
6900 character message
Appendixes
Appendix A DEPARTMENT OF DEFENSE DIRECTIVE 4640.11: 21
DECEMBER 1987: SUBJECT: MANDATORY USE OF
MILITARY TELECOMMUNICATIONS STANDARDS IN THE
MIL-STD-188 SERIES
Appendix B LIST OF ABBREVIATIONS AND ACRONYMS USED IN
MIL-STD-188-172
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