Подсистема ISUP. Основные положения. Функциональная диаграмма подсистемы ISUP. Пример организации сети ОКС7/ISUP, страница 4

********      Service Information Octet

----0101        Service Indicator : 5 = ISDN User Part

--00----        Priority Indicator : 0

10------        Network Indicator : 2 = National network

********  ISDN User Part

********    <General Fields>

********      Destination Point Code : 15418

********      Originating Point Code : 15883

0100----      Signalling Link Selection : 4

********      Circuit Identity Code : 68

00010010    RESET CIRCUIT

********  MTP (07/96)

********    MSU

********      <General Fields>

-1001011        Backward Sequence Number : 75

1-------        Backward Indicator Bit : 1

-0010010        Forward Sequence Number : 18

1-------        Forward Indicator Bit : 1

--001000        Length Indicator : 8 = LI -> Message Signal Unit

********      Service Information Octet

----0101        Service Indicator : 5 = ISDN User Part

--00----        Priority Indicator : 0

10------        Network Indicator : 2 = National network

********  ISDN User Part

********    <General Fields>

********      Destination Point Code : 15418

********      Originating Point Code : 15883

0100----      Signalling Link Selection : 4

********      Circuit Identity Code : 68

00010111    CIRCUIT GROUP RESET

00000011      Range : 3

********  MTP (07/96)

********    MSU

********      <General Fields>

-1001011        Backward Sequence Number : 75

1-------        Backward Indicator Bit : 1

-0010010        Forward Sequence Number : 18

1-------        Forward Indicator Bit : 1

--001000        Length Indicator : 8 = LI -> Message Signal Unit

********      Service Information Octet

----0101        Service Indicator : 5 = ISDN User Part

--00----        Priority Indicator : 0

10------        Network Indicator : 2 = National network

********  ISDN User Part

********    <General Fields>

********      Destination Point Code : 15883

********      Originating Point Code : 15418

0100----      Signalling Link Selection : 4

********      Circuit Identity Code : 68

00101001    CIRCUIT GROUP RESET ACKNOWLEDGE

00000011      Range : 3

00000000      Status : 00

Процедура запроса данных о состоянии группы каналов

Данная процедура инициируется по запросу обслуживающего персонала. Ее цель – получить информацию о текущем состоянии группы каналов.

********  MTP (07/96)

********    MSU

********      <General Fields>

-1001011        Backward Sequence Number : 75

1-------        Backward Indicator Bit : 1

-0010010        Forward Sequence Number : 18

1-------        Forward Indicator Bit : 1

--001000        Length Indicator : 8 = LI -> Message Signal Unit

********      Service Information Octet

----0101        Service Indicator : 5 = ISDN User Part

--00----        Priority Indicator : 0

10------        Network Indicator : 2 = National network

********  ISDN User Part

********    <General Fields>

********      Destination Point Code : 15883

********      Originating Point Code : 15418

0100----      Signalling Link Selection : 4

********      Circuit Identity Code : 68

00101010    CIRCUIT GROUP QUERY

00000011      Range : 3

********  MTP (07/96)

********    MSU

********      <General Fields>

-1001011        Backward Sequence Number : 75

1-------        Backward Indicator Bit : 1

-0010010        Forward Sequence Number : 18

1-------        Forward Indicator Bit : 1

--001000        Length Indicator : 8 = LI -> Message Signal Unit

********      Service Information Octet

----0101        Service Indicator : 5 = ISDN User Part

--00----        Priority Indicator : 0

10------        Network Indicator : 2 = National network

********  ISDN User Part

********    <General Fields>

********      Destination Point Code : 15883

********      Originating Point Code : 15418

0100----      Signalling Link Selection : 4

********      Circuit Identity Code : 68