Interfaces for the optical transport network
|Publication Date:||1 June 2020|
The optical transport network (OTN) supports the operation and management aspects of optical networks of various architectures, e.g., point-to-point, ring and mesh architectures.
This Recommendation defines the interfaces of the OTN to be used within and between subnetworks of the optical network, in terms of:
- OTN hierarchy;
- functionality of the overhead in support of multi-wavelength optical networks;
- frame structures;
- bit rates;
- formats for mapping client signals.
Functions and process flows associated with the defined interfaces are specified in [ITU-T G.798].
The interfaces defined in this Recommendation can be applied at user-to-network interfaces (UNI) and network node interfaces (NNI) of the OTN.