Adopted FT7-0110 revolving square module, it can save space and gets low cost. The face terminal of the module adopted wire pole screwing type and connects with consumer cable. The rear terminal adopted revolving clip connection and connects with trunk cable. The module can not only overturn but also take out of the box body to operation. It is very convenient. The shell is one-off molded by the die and has beautiful sculpt. It mainly applies to the connection between the trunk cable and section wire in the town, village telephone net.