Telnet Tips
It is not the intention of this guide to detail all of the operations and functionality of Telnet;
however, some basic level of understanding is necessary for operating the MPX 866 A matrix
switcher via Telnet.
Open
Connect to the MPX 866 A matrix switcher using the Open command. Once you are
connected to the switcher, you can enter the SIS commands the same as you would if you
were using the RS-232 of RS-422 link.
Connect to the MPX 866 A matrix switcher as follows:
1. At the Telnet prompt, type open {IP address} and then press <Enter>.
If the switcher is not password protected, no further prompts are displayed until
you break or disconnect the connection to the matrix switcher.
If the switcher is password protected, Telnet displays the password prompt.
2. If necessary, at the password prompt, type the appropriate password and then press
<Enter>.
Connection to the switcher via the Ethernet can be password protected. There are
two levels of password protection: administrator and user. A person logged on as an
administrator has full access to all matrix switcher switching capabilities and editing
functions. Users can create ties, set mutes, and view all settings with the exception of
passwords. By default, the MPX 866 A matrix switcher is shipped with both passwords
set to {carriage return}.
Once you are logged in, the switcher returns either Login Administrator or Login
User
. No further prompts are displayed until you break or disconnect the connection to
the MPX 866 A matrix switcher.
Escape character and Esc key
When Telnet is rst started, the utility advises that the Escape character is ‘Ctrl+]’. Many
SIS commands include the keyboard <Esc> key. Consequently, some confusion may exist
between the Escape character and the Escape key.
The Telnet Escape character is a key combination, the <Ctrl> key and the <]> key pressed
simultaneously, which returns you to the Telnet prompt while leaving the connection to the
MPX 866 A matrix switcher intact.
The Escape key is the <Esc> key on the computer keyboard.
Local echo
Once connected to the MPX 866 A matrix switcher, 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 responses of the switcher 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 see a display such as a*d*m*i*n*, where admin is the keyed in password and
***** is the masked response.
You can turn off local echo by typing unset local_echo and then pressing <Enter> at the
Telnet prompt. If you are connected to the MPX 866 A matrix switcher and need to access
the Telnet prompt to turn local echo off, type the Escape character (<Ctrl>+<]>).
MPX 866 A Media Presentation Matrix Switcher • Ethernet Connection 117
