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OSN 500 550 580 V100R008C50 Commissioning and Configuration Guide 02

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Signal Flow and Timeslot Allocation

Signal Flow and Timeslot Allocation

Before you configure the broadcast data services, you need to learn the signal flow of a broadcast data service according to the networking diagram.

  • During the communication between the master station and the slave station, the signal flow is as follows:
    • The data of the monitoring host is added to the SDH line board of NE1 through the broadcast data port of NE1 and is then transmitted towards the directions of NE2 and NE4.
    • On the NE2 side, the data that is transmitted from the NE1 side is dropped to the broadcast data port of NE2 through the SDH line board of NE2, and is then transmitted to the environment monitor of NE2. That is, the data of the monitoring host is transmitted to the environment monitor on the NE2 side. At the same time, the data of the monitoring host passes through the SDH line board and is then transmitted to the direction of NE3.
    • On the NE3 side, the data that passes through the NE2 side is dropped to the broadcast data port of NE3 through the SDH line board of NE3, and is then transmitted to the environment monitor of NE3. That is, the data of the monitoring host is transmitted to the environment monitor on the NE3 side.
    • On the NE4 side, the data that is transmitted from the NE1 side is dropped to the broadcast data port of NE4 through the SDH line board of NE4 and is then transmitted to the environment monitor of NE4. That is, the data of the monitoring host is transmitted to the environment monitor on the NE4 side.
  • The signal flow from each slave station to the master station is in the opposite direction to the signal flow from the master station to each slave station.

You can determine the overhead bytes, source, and sink of the broadcast data of each NE according to the service signal flow and Figure 2-82.

Table 2-199  NE parameters
NE Overhead Interface Broadcast Data Source Broadcast Data Sink
NE1 SERIAL1 SERIAL1 1-SL1D-1, 2-SL1D-1
NE2 SERIAL1 2-SL1D-1 1-SL1D-1, SERIAL1
NE3 SERIAL1 2-SL1D-1 SERIAL1
NE4 SERIAL1 1-SL1D-1 SERIAL1
NOTE:

After the settings are performed for NE1, NE1 broadcasts the data that is input from the broadcast data source (broadcast data port) to the directions of the 1-SL1D and 2-SL1D at the same time. The 1-SL1D and 2-SL1D transmit the input data to the broadcast data port. Hence, only one environment monitor can transmit data to the monitoring host at a time.

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Updated: 2019-01-21

Document ID: EDOC1100020976

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