I want to avoid  the pop up error messages or redirect them to a file when a terminal launched from a batch file wasn't able to open. I that example the name of the instance was wrong. I am looking for a kind of silent mode or whatever let me avoid this messages. 

Could be enabled a service as "%service_telnet" from cmd? I need to open a cache terminal from cmd but without this service enabled it is not possible, I mean avoiding the use of manage portal of course.