terminalTelnetTcpPort 1.3.6.1.4.1.8691.2.8.1.4.1.2.5.1.1.6

By default, the Telnet TCP port number is set to 23, which is the default TCP port number for Telnet. If you need to telnet to this NPort 6000 series device server's serial port, set the Telnet TCP port to a different number.