执行telnet指令开启终端机阶段作业，并登入远端主机。
telnet的命令的格式：
telnet ip port
例1： 建立连接不成功
[richmail@portal bin]$ telnet 192.168.9.177
Trying 192.168.9.177...
telnet: connect to address 192.168.9.177: Connection refused
检查ip和端口是否正常
例2：建立链接成功
[richmail@portal bin]$
[richmail@portal bin]$
[richmail@portal bin]$
[richmail@portal bin]$ telnet 192.168.9.198
Trying 192.168.9.198...
Connected to 192.168.9.198.
Escape character is '^]'.
ActiveMQ
MaxFrameSize@ CacheSize
CacheEnabledSizePrefixDisabled MaxInactivityDurationInitalDelay'TcpNoDelayEnabledMaxInactivityDurationu0TightEncodingEnabledStackTraceEnabled