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To Establish a Network Connection to the DMP128:
1. Open a TCP socket to port 23 using the mixer 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 DMP128 responds with a copyright message including the date, the name of the
product, firmware version, part number, and the current date/time.
a. If the DMP128 is not password-protected, the device is ready to accept SIS
commands immediately after it sends the copyright message.
b. If the DMP128 is password-protected, a password prompt appears below the
copyright message. Proceed to step 3.
3. If the device is password protected, 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.
Connection Timeouts
The Ethernet link times out after a designated period of time of no communications.
By default, this timeout value is set to 5 minutes but the value can be changed (see
“Ethernet data port” on page121).
NOTE: Extron recommends leaving the default timeout at 5 minutes and periodically
issuing the Query (Q) 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 a serial port. 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.
DMP128 • SIS Programming and Control 115