The invention discloses a device for switching a 63-path bridge service and a kilomega
Ethernet port in an STM-1. the structure of the device comprises a first-level two-layer switching module, a second-level
Ethernet two-layer switching module, a kilomega
Ethernet electric port, a kilomega Ethernet optical port, an Ethernet over E1 and E1 mapping module, an SDH
clock processing module, an STM-1 optical port, a VC4
bus and an Ethernet over E1 and E1 mapping module. The device for switching the 63-path bridge service and the kilomega Ethernet port in the STM-1 has the advantages of saving a lotof Ethernet category-5 cables and 75
omega coaxial cables, lowering the amount requirement of the Ethernet ports and E1 ports, reducing the occupation of stand space in a communication center machineroom, efficiently solving the problems of
machine room wiring and maintaining difficulty caused by accessing too many cables, because 63 distal ends can be simultaneously accessed into the Ethernet over E1 bridge service only needing butt jointing a pair of optical fibers and an SDH transmission device and connecting one Ethernet category-5 cable with an Ethernet switch or a
router. The inventionadopts the efficient, simple, convenient, low-cost accessing mode.