When you configure microwave services, you need to configure cross-connections for each station that the services pass through, according to the service direction.
Procedure
- In the NE Explorer, click an NE and choose from the Function Tree.
- Optional: Click Query to query the cross-connection services from the NE.
- Click New and the Create SDH Service dialog box is displayed.
- Set the Level, the Direction, the source and the sink of the service.
- Click OK.
Sample Configuration
In Figure 1, NE1, NE2, NE3 and NE4 comprise an unprotected chain. Services are transmitted by microwave between NE1 and NE2, and NE3 and NE4. Services are transmitted by fiber between NE2 and NE3.
Two point-to-point bidirectional E1 services are transmitted between NE1 and NE2. The services use the first and the second VC12 timeslot of a tributary board, and the first and the second VC12 timeslot of an intermediate frequency board.
Two bidirectional E1 services are transmitted between NE1 and NE4. The services use the third and the fourth VC12 timeslots of the tributary board, the third and the fourth VC12 timeslots of the intermediate frequency board, and the third and the fourth VC12 timeslots in the first VC4 of a line board.
The service flow of the E1 services between NE1 and NE2 is as follows: E1←→tributary board at NE1←→intermediate frequency board at NE1←→intermediate frequency board at NE2←→tributary board at NE2
The service flow of the E1 services between NE1 and NE4 is as follows: E1←→tributary board at NE1←→intermediate frequency board at NE1←→intermediate frequency board at NE2←→line board at NE2←→line board at NE3←→intermediate frequency board at NE3←→intermediate frequency board at NE4←→tributary board at NE4
According to the service flow, you need to perform the configuration as follows:
- Configure add or drop VC12 services for NE1. The source and the sink timeslots of the bidirectional services between the tributary board and the intermediate frequency board range from 1 to 4.
- Configure add or drop VC12 services for NE2. The source and the sink timeslots of the bidirectional services between the intermediate frequency board and the tributary board range from 1 to 2.
- Configure pass-through VC12 services for NE2. The source and the sink timeslots of the bidirectional services between the intermediate frequency board and the line board range from 3 to 4.
- Configure pass-through VC12 services for NE3. The source and the sink timeslots of the bidirectional services between the line board and the intermediate frequency board range from 3 to 4.
- Configure add or drop VC12 services for NE4. The source and the sink timeslots of the bidirectional services between the intermediate frequency board and the tributary board range from 3 to 4.