Why not telnet the PowerPC?

[chenggh04 at st.lzu.edu.cn]

Hi,Everyone:
   I launched telnetd service in PowerPC but when I want to connect to my embedded
machine, I get:

         Trying 192.168.0.54...
         Connected to 192.168.0.54 (192.168.0.54).
         Escape character is '^]'.
         Connection closed by foreign host.

I suppose, something is missing, but what?
                                                  Cheng Guanghui