Well spotted! Net::Telnet suggests:
Usually you want the remote TERM environment variable to be set to something like "dumb" so you don't read escape sequences meant to be interpreted by a display terminal.
However, here the server requests neither terminal type, nor environment variables, but sends a "\033Z" to query terminal device attributes. A good response to this might be "\033[?6c" ('I am a vt102').

In reply to Re^2: Perl Telnet client not receiving all the data by oiskuu
in thread Perl Telnet client not receiving all the data by jicjoc

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