Understand ODU and ODU Cross Connections
In the case of channelization, ODU is created as a sub controller of an OTU controller.
Optical Channel Data Unit (ODU ) contains information for maintenance and operational functions to support optical channels. ODU Over Head (OH) information is added to the ODU payload to create the complete ODUk. The ODUk OH consists of portions dedicated to the end-to-end ODUk path and to six levels of tandem connection monitoring. The ODUk path OH is terminated where the ODUk is assembled and disassembled. The TCM OH is added and terminated at the source and sink to the corresponding tandem connections.
ODU cross connection is an end-to-end channel between two OTN/Client ports in OTN network within NCS4k node.
- Unidirectional point to point
- 1+1 unidirectional SNC/N, SNC/I protection without an APS protocol
- 1+1 unidirectional SNC/N, SNC/I protection with an APS protocol
- Bidirectional point to point
- 1+1 bidirectional SNC/N, SNC/I protection with an APS protocol