Setting a Loopback for an ODU Interface

You can set a loopback for an ODU interface by using the U2000 Web LCT. The ODU interface loopback is a common fault location method used to test and maintain the ODU board. The ODU interface loopback is used to test the radio frequency (RF) link and interfaces on the ODU board, as well as to test the ODU service processing module and the cross-connect board.

Context

The ODU interface loopback can be set to an outloop or an inloop.
  • When an outloop is used, the RF service received by an NE is returned at the ODU interface. See Figure 1. An outloop can be used to test the ODU interface and the RF link connected to the ODU board.
    Figure 1 Outloop

  • When an inloop is used, the RF service transmitted by NE is returned to the cross-connect board at the ODU interface. See Figure 2. An inloop can be used to test the ODU service processing module and the cross-connect board.
    Figure 2 Inloop

NOTICE:

As a loopback interrupts services, it is only used for fault location and must be released after the fault is removed.

Procedure

  1. In the NE Explorer, select a board and choose Configuration > ODU Interface.
  2. Select By Function. Select RF Loopback.
  3. Select an RF interface from the list and double-click RF Loopback to select a loopback mode.
  4. Click Apply.
Parent topic: Performing a Loopback
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