Based on LJ3030AN, adding optical transmitting module. Each optical transmitting module provides one high speed optical interface, four groups of transparent transmitting E1 interfaces and two groups of 100 M Ethernet interfaces with the function of VLAN. The transmission of the four groups of transparent transmitting E1 in one optical direction realized the multiplexing of broadband and narrowband services on optical. The other functions are the same as LJ3030AN.