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MIL-STD-188-185 Interoperability Standard For Uhf Misaltcom Dama Control SystemThis standard establishes mandatory requirements applicable to the channel controller \(CC\) to provide the capability for terminals to access pre-assigned \(PA\) or demand-assigned \(DA\) user-to-user communications \(UCOM\) services that operate on either 5-kHz or 25-kHz ultra high frequency \(UHF\) satellite communications \(SATCOM\) channels and represent the minimum requirements that must be implemented. Requirements in this standard may be exceeded by the CC to satisfy specific Department of Defense \(DoD\) requirements, provided interoperability is maintained. For example, the incorporation of additional standard and nonstandard interfaces is not precluded. MIL-STD-188-181 defines the modulation types and rates, forward error correction \(FEC\), interleaving, user-traffic communications security \(COMSEC\), and performance parameters that apply to the bursts employed for each transmission employed in this standard.

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MIL-STD-188-185A

PARAGRAPH

PAGE

5.4.2.3.3.1.3

Service request placed in queue...................192

5.4.2.3.3.2

Join net service..................................192

5.4.2.3.3.2.1

Join net request rejected.........................193

5.4.2.3.3.2.2

Join net request accepted.........................194

5.4.2.3.3.3

Service preemption................................194

5.4.2.3.3.4

Service teardown..................................196

5.4.2.3.3.4.1

Terminal-initiated teardown or cancellation.......196

5.4.2.3.3.4.2

PCC-initiated teardown or cancellation............197

5.4.2.3.3.5

Remove from service...............................197

5.4.2.3.4

Terminal status message interchange...............197

5.4.2.3.4.1

Terminal status reporting initiated by

terminal..........................................198

5.4.2.3.4.2

Terminal status reporting initiated

by PCC............................................198

5.4.2.3.4.3

Reporting I/O port availability...................199

5.4.2.3.4.4

Reporting guard list contents and changes.........200

5.4.2.3.4.4.1

Initial reporting of guard list contents..........200

5.4.2.3.4.4.2

Updating guard list...............................201

5.4.2.3.5

Channel control transition message interchange....202

5.4.2.3.6

Directed messages monitoring message interchange..203

5.4.2.4

Queue maintenance.................................204

5.4.2.4.1

Pending and blocked service request queue

maintenance.......................................204

5.4.2.4.2

Preempted service queue maintenance...............205

5.4.2.4.3

Reserved..........................................205

5.4.2.5

Addressing........................................205

5.4.2.5.1

Terminal address..................................205

5.4.2.5.2

Reserved..........................................205

5.4.2.5.3

I/O port addresses................................205

5.4.2.6

Service numbers...................................205

5.4.2.7

Reporting guard list contents.....................206

5.4.2.8

Access restrictions...............................206

5.4.2.8.1

UCOM capacity reservation.........................206

5.4.2.8.2

Service access restriction determination..........207

5.4.2.8.3

Terminal access restriction determination.........208

5.5

Error control.....................................208

5.5.1

Error detection...................................208

5.5.2

Error correction..................................209

5.5.2.1

FEC encoder and interleaver requirements..........209

5.5.2.2

FEC decoder and de-interleaver requirements.......210

5.6

Orderwire processing and encryption...............210

5.6.1

Orderwire processing..............................211

5.6.1.1

Unencrypted FOW processing........................211

5.6.1.1.1

Unencrypted FOW transmission......................211

5.6.1.1.2

Unencrypted FOW reception.........................211

5.6.1.2

Unencrypted DROW processing.......................212

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