Extron Electronics ISM 824 - Manual (Page 169)

A-5 ISM 824 Integrated Scaling Multiswitcher • Reference Information
Local echo
Once connected to the ISM 824, by default, Telnet does not display your keystrokes
on the screen. SIS commands are typed in blindly and only the SIS responses are
displayed on the screen. To command Telnet to show keystrokes, at the Telnet
prompt, type set local_echo and then press Enter before you open the connection to
the switcher.
With local echo turned on, keystrokes and the switcher’s responses are displayed
on the same line. For example: 1*1!In1 Out1 All, where 1*1! is the SIS command
and In1 Out1 All is the response.
With local echo turned on, all keystrokes are displayed, even those that should be
masked, such as the password entry. For example, when entering a password with
local echo turned on, you will see a display such as a*d*m*i*n*, where admin is the
keyed in password and ***** is the masked response.
Local echo can be turned off by typing unset local_echo and then pressing Enter
at the Telnet prompt. If you are connected to the ISM 824 and need to access the
Telnet prompt to turn local echo off, type the Escape character ( Ctrl + ] ).
Set carriage return-line feed
Unless commanded otherwise, Telnet transmits a line feed character only (no
carriage return) to the connected switcher when you press the Enter key. This is
the correct setting for SIS communication with the switcher. The Telnet set crlf
command forces Telnet to transmit carriage return and line feed characters when
Enter is pressed, but if crlf is set, the SIS link with the switcher will not function
properly.
Close
To close the link to the switcher, access the Telnet prompt by typing the Escape
character ( Ctrl + ] ). At the Telnet prompt, type close and then press Enter.
Help
For Telnet command definitions, at the Telnet prompt, type ? and then press Enter.
Quit
Exit the Telnet utility by typing quit and then press Enter at the Telnet prompt. If
you are connected to the ISM 824 switcher, access the Telnet prompt by typing the
Escape character ( Ctrl + ] ).