Telnet Protocol-a proposed document(3)

　　-----------------------+ +----------------------

　　| |

　　\ | | /

　　\ -----------------| +-+ +-+ |-----------------/

　　\ NCP | |I| |I| | NCP /

　　\ ^ <--->|M|---NETWORK--|M|<---> ^ /

　　\ -----|-----+ | |P| |P| | +-----|-----/

　　\ v | | +-+ +-+ | | v /

　　USER \ | | | | TELNET / USER

　　PROCESSES, ) TELNET |--| |--|Protocol( PROCESS

　　Sub <===> | | | |Routing<--->Sub

　　Systems, / ^ | | | | ^^ \Systems

　　ETC /-----|-----+ | | +----||-----\ETC

　　/ TTY v <---> Local Local <===> TTY vv \

　　/ Handles | Terminals Terminals| Handles <===>

　　/-----------------| |-----------------\

　　/ | | \

　　| |

　　-----------------------+ +----------------------

　　<--->Current TELNET paths

　　<===>Candidate future TELNET paths

　　Figure 2. Current and Candidate Future TELNET Paths

　　+---------------------------+----+----+----+----+----+----+----+----+

　　|\ b8 -> | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |

　　| \ b7 -> | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |

　　| \ b6 -> | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 |

　　|B \ b5 -> | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 |

　　| I +---+---+---+---+------+----+----+----+----+----+----+----+----+

　　+ T | b | b | b | b |\COL->| | | | | | | | |

　　\ S| 4 | 3 | 2 | 1 | \ | | | | | | | | |

　　\ | | | | | |\ | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |

　　\ | | | | | | | | | v \ | | | | | | | | |

　　\ | v | v | v | v |ROW \ | | | | | | | | |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 0 | 0 | 0 | 0 | 0 |NUL |DLE | SP | 0 | @ | P | \ | p |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 0 | 0 | 0 | 1 | 1 |SOH |DC1 | ! | 1 | A | Q | a | q |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 0 | 0 | 1 | 0 | 2 |STX |DC2 | " | 2 | B | R | b | r |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 0 | 0 | 1 | 1 | 3 |ETX |DC3 | # | 3 | C | S | c | s |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 0 | 1 | 0 | 0 | 4 |EOT |DC4 | $ | 4 | D | T | d | t |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 0 | 1 | 0 | 1 | 5 |ENQ |NAC | % | 5 | E | U | e | u |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 0 | 1 | 1 | 0 | 6 |ACK |SYN | &| 6 | F | V | f | v |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 0 | 1 | 1 | 1 | 7 |BEL |ETB | ' | 7 | G | W | g | w |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 1 | 0 | 0 | 0 | 8 | BS |CAN | ( | 8 | H | X | h | x |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 1 | 0 | 0 | 1 | 9 | HT | EM | ) | 9 | I | Y | i | y |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 1 | 0 | 1 | 0 | 10 | LF |SUB | * | : | J | Z | j | z |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 1 | 0 | 1 | 1 | 11 | VT |ESC | + | ;| K | [ | k | { |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+

　　| 1 | 1 | 0 | 0 | 12 | FF | FS | , | <| L | \ | l | | |

　　+---+---+---+---+------+----+----+----+----+----+----+----+----+