The rapid development of information and communication technology has shifted to the digital transformation of various industries. Different vertical industries users have expected the tailored service requirements and personalized experiences. In order to meet the tailored differentiated service requirements and service level assurance

the use of transmission network slice technology can provide multiple transmission connectivity/slice networks with degree of isolation

the slices must be isolated from each other

and the function of orchestration and management of transmission network slice is essential. Based on the requirements

concept

application scenarios

function architecture of transmission network slice

and the transmission network slice orchestration technology in international SDOs

this text discussed the development of the transmission network slice orchestration technology

the solution of orchestration automation

and intelligent Operation

Administration and Maintenance（OAM） of transmission network slice

gave an implementation case

also considered the deployment of the transmission network slice orchestration function.