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NPort IA5150/5250 Series User's Manual
Ethernet Modem Mode
Ethernet Modem Mode is designed for use with legacy operating systems, such as MS-DOS, that
do not support TCP/IP Ethernet. By connecting one of NPort IA5150/5250's serial port to the
MS-DOS computer's serial port, it is possible to use legacy software originally designed to
transmit data via modem, but now transmit the data over the Ethernet.
Reverse Telnet Mode
Console management is commonly used by connecting to Console/AUX or COM ports of routers,
switches, and UPS units. Rtelnet works the same as RAW mode in that only one TCP port is
listened to after booting up. The system then waits for a host on the network to initiate a
connection. The difference is that the RAW mode does not provide the conversion function
provided by Telnet. If the connected devices need to use the CR/LF conversion function when
controlling, then users must choose Rtelnet mode.
Disabled Mode
When the Operation Mode for a particular port is set to Disabled, that port will be disabled.
Choosing the Proper Operation Mode
4-5
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