Stands for network operations center.
It’s the environment where we can control the transport network remotely.
We can configure , monitor , troubleshooting the cabinets remotely from Noc.
Stands for data communication network.
Set of protocols used to establishing the communication between cabinets and NMS to exchange mangment informations.
Stands for network mangment system
It’s the tool that allow us to login remotely to the sites and cabinets to perform configuration, troubleshooting or even performance monitoring
Like NFM T in Nokia and imaster NCE in Huawei
Stand for network element
It represents the equipment and cabinets of transmission like microwave Links and optical cabinets
Like RTN Huawei or mini Link 6000 Ericsson or OSN Huawei or SPO or 1830 PSS Nokia
It’s a set of protocols that allows traffic Flo along the network
Like OTN , SDH , sonet , Ethernet
Some protocols working in L1 and some other in L2 or L2
Some technologies used to multiplex more than traffic flow in to single transmission line, some of them depends on frequency and some other depends on wavelength or time slots.