HP t1000 T1000 Series Terminal Emulation Guide - Page 85

Network Virtual Terminal Mode Network Virtual Terminal (NVT) mode allows the operator to communicate with a network gateway (in ASCII) for routing, logon etc., before the full IBM terminal emulation protocol is established. NVT mode is indicated by the symbol in the status line along the bottom of the window. NVT mode displays an unformatted screen for data entry, allowing most of the keyboard functionality for local editing. However, when the Enter key is pressed, the line that the cursor is positioned on is sent over Telnet as an ASCII string with CR/LF terminators. The cursor is then positioned at the start of the next line. ASCII data received over Telnet is also displayed at the current cursor position. A CR character is acted upon as a 'new line' character, causing the cursor to move to the start of the next line, scrolling the display if necessary. Once the appropriate details have been entered to establish an IBM host session (which may be automatic), the screen is cleared and switched into full IBM 3270 terminal emulation mode, as indicated by the symbol in the status line. The Status Line The last line in the window displays the status in the form of symbols and alpha-numeric characters. A colored line separates status information from the rest of the display. Information is displayed in six regions within the status line as listed below. 1: Readiness & System Connection Symbol Color Column T Blue 1 A Blue 2 Blue 3 Blue 3 blue 3 Meaning Telnet session running Online (non-SNA) Network Virtual Terminal mode My job (IBM emulation screen) Host operating system mode IBM 3270 Emulation 6-3