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Establishing a Connection
The Ethernet cable can be terminated as a straight-through cable or a crossover cable and must be properly
terminated for your application (see
•
Crossover cable — Direct connection between the computer and the device.
•
Patch (straight) cable — Connection of the device to an Ethernet LAN.
To establish a network connection to the device:
1. Open a TCP socket to port 23 using the device IP address.
NOTE: If the local system administrators have not changed the value, the factory-specified default,
192.168.254.254, is the correct value for this field.
2. The device responds with a copyright message including the name of the product, firmware version, part
number, and the current date and time.
3. Enter the appropriate administrator or user password.
a. If the password is accepted, the device responds with Login User or Login Administrator.
b. If the password is not accepted, the Password prompt reappears.
NOTE: The factory configured passwords for all accounts on this device have been set to the device serial
number. In the event of a complete system reset, the passwords revert to the default, extron.
Connection Timeouts
The Ethernet link times out after a designated period of time with no communication. By default, this timeout value
is 5 minutes, but the value can be changed.
NOTE: Extron recommends leaving the default timeout at 5 minutes and periodically issuing the
command to keep the connection active. If there are long idle periods, disconnect the socket and reopen the
connection when another command must be sent.
Verbose Mode
Telnet connections can be used to monitor for changes that occur, such as SIS commands from other Telnet
sockets or serial port changes. For a Telnet session to receive change notices, the Telnet session must be in
verbose mode 1 or 3. In verbose mode 1 or 3, the Telnet socket reports changes in messages that resemble SIS
command responses. Front panel changes are also sent to users who are in verbose mode (see
on page 39).
Simple Instruction Set Control
Host-to-Unit Instructions
SIS commands consist of one or more characters per field. No special characters are required to begin or end a
command character sequence. When a command is valid, the transmitter executes the command and sends a
response to the host device. All responses from the transmitter to the host end with a carriage return and a line
feed (CR/LF = ]), which signals the end of the response character string. A string is one or more characters.
Device-Initiated Power-Up Message
When the device completes its start-up, it issues the following message to the host:
© Copyright 2022, Extron DTP3 T 203, Vx.xx, 60-1885-52
•
Vx.xx is the firmware version number.
•
60-1885-52 is the part number of the unit.
TP Cable Recommendations for Ethernet Communication
DTP3 T 203 • SIS Configuration and Control
on page 8).
(Q)
Query
Verbose Mode
27
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