OTN - Optical Transport NetworkOTN (Optical Transport Network) is designed to improve transport network performance using fibre optic technology, with the ultimate goal to facilitat... View more
OTT - Over The TopA term used to describe the delivery of communication services over the top of an existing transport network, without any relationship between the OTT... View more
Out of Band SignallingOut of Band Signalling utilizes an additional signalling channel alongside the data information channel to carry control information such as signallin... View more
OverheadThis can be described as information added to a user's transmitted message for the purpose of control. Such overhead includes error checking and synch... View more
Overlay NetworkThis is a telecommunication network which is added over essentially the same route as an existing network yet does not replace it. The overlay network... View more