Cutover: literally, cut first and then connect. Fiber cut-over mainly refers to the cut-over of optical fiber trunk lines (upgrade and replacement of equipment, etc...). I work as an agent for wireless communication and have done several cutovers.
Cutover is generally an engineering project of the communication maintenance company. For example, when the base station is renovated, the cutover is usually performed after 12 o'clock in the evening. If a team of four people is used, it can usually be completed in three hours.
The detailed definition is: operating the lines and equipment in use will directly affect the services carried on them. The most critical step in network transformation is network cutover. Network cutover is also called network migration, which refers to the physical or logical change of the operating network. The most critical step in network transformation is network cutover.
