On the OptiX OSN 2500, one PQ1 board is inserted in slot 13, which is protected by the other PQ1 board in slot 5. The PQ1 board in slot 13 needs to be deleted. Firstly, the TPS protection group between the PQ1 boards in slot 13 and slot 5 is deleted and then the PQ1 in slot 5 is deleted. When the PQ1 board in slot 13 is deleted, however, the T2000 returns a prompt indicating that the service source cannot be released and the error code is "39492". The NE software is 5.27.01.16 and the board software of the PQ1 is 1.17.
1.Check whether the PQ1 board belongs to the TPS protection group. It is found that the TPS protection group is already deleted before the PQ1 board in slot 13 deleted.
2.Check the services on the PQ1 board in slot 13. It is found that the PQ1 board is not configured with any services or paths.
3.It is found that the PQ1 board in slot 5 does not have the corresponding interface board, and can be deleted. Then, Check the relevant information. It is found that the PQ1 board in slot 13 has two D12S interface boards in slot 17 and slot 18. Delete the two interface boards, and then the PQ1 board in slot 13 is successfully deleted.
You may fail to delete the PQ1 board on the T2000 in the following cases:
1.The PQ1 board may belong to a TPS protection group.
2.The PQ1 board is configured with services.
3.The interface board corresponding to the PQ1 board is not deleted.