Relationship between bit errors of a tributary board and those of an optical board

2

Relationship between bit errors of a tributary board and those of an optical board:
1. As the tributary board detects signals from a cross-connect board, if bit errors occur on the optical board, they will also occur on the tributary board.
2. If the optical board has no bit errors, bit errors may occur on the tributary board due to faults of the tributary board or cross-connect board.
3. If the tributary board has no bit errors, the optical board is normal and has no bit errors either.

Other related questions:
Relationship between bit errors of a tributary board and those of an optical board
Relationship between bit errors of a tributary board and those of an optical board: 1. As the tributary board detects signals from a cross-connect board, if bit errors occur on the optical board, they will also occur on the tributary board. 2. If the optical board has no bit errors, bit errors may occur on the tributary board due to faults of the tributary board or cross-connect board. 3. If the tributary board has no bit errors, the optical board is normal and has no bit errors either.

Relationship between the optical power of a line board and bit errors
Relationship between the optical power of a line board and bit errors: Bit error events may occur when the receive optical power of a line board exceeds the upper or lower threshold. If bit error events occur when the receive optical power is between the lower threshold and the upper threshold, the possible causes are as follows: The fiber quality deteriorates, the line board is faulty, or the connector is dirty.

Bit error detection mechanism of a 2M tributary board
Bit error detection mechanism of a 2M tributary board: A 2M tributary board performs bit error detection for signals transmitting from a cross-connect board to the 2M tributary board, and does not perform bit error detection for 2 Mbit/s signals received from the PDH physical port on the 2M tributary board.

Relationship of the optical power, sensitivity, and bit errors
Relationship of the optical power, sensitivity, and bit errors: When the optical power is lower than the receiver sensitivity, bit errors do not necessarily occur. However, you are advised to adjust the optical power to the normal range as soon as possible.

Differences between timeslots occupied by GE services on LOM boards and those on other boards
Different from other boards, a LOM board maps a client service into an STM-64 signal and then multiplexes the STM-64 signal into an OTU2.An STM-64 signal is divided into 8 timeslots, each of which occupies 1.24 Gbit/s bandwidth. Therefore, a GE service on a LOM board occupies one timeslot. On other boards, each timeslot occupies 155 Mbit/s bandwidth. Therefore, a GE service on another board occupies seven timeslots.

If you have more questions, you can seek help from following ways:
To iKnow To Live Chat
Scroll to top