The present invention relates to communication switchover equipment. Its main structure includes the following portions: a load-bearing seat, a pin joint block set on the load-bearing seat, the pin joint block is equipped with a pin joint side groove, a slide lever is used for inserting a brake block into said side groove, a lower positioning block and an upper positioning block are successively set on the load-bearing seat, said two positioning blocks are respectively equipped with an upper positioning groove and a lower positioning groove for respectively placing a third optical fibre, a second optical fibre and a first optical fibre. Said invention also provides its operation method and concrete steps.