Telnet Interface; Using Hyperterminal For Telnet Remote Control Operation; Figure 7-1. Telnet Interface Example - Windows Command-Line; Figure 7-2. Telnet Interface Example - Hyperterminal - Comtech EF Data LBC-4000 Installation And Operation Manual

7.3

Telnet Interface

Chapter 8. SERIAL INTERFACE OPERATION
The LBC-4000/-ST provides a Telnet interface for equipment M&C via the standard equipment
Remote Control protocol.
Telnet is implemented in the Ethernet M&C in a "Telnet wrapper". When the user Telnets to the
unit, it emulates a local EIA-232C or EIA-485 serial connection to the unit. You can then type the
same command syntax that he would use from a serial remote terminal and the Ethernet M&C
"unwraps" the Telnet packet and sends it on to the base unit processor, which responds to it as if
it was a serial remote command.
The Telnet interface requires user login at the Administrator level and Read/Write level. Once
logged into the Telnet interface as the Administrator, you have access to the optional serial-based
Remote Control Interface. Figure 7-1 shows an example of the login process for remote control
operation.
Figure 7-1. Telnet Interface Example – Windows Command-line

7.3.1 Using HyperTerminal for Telnet Remote Control Operation

There is a disadvantage when using Windows Command line as a Telnet client with the optional
Remote Control protocol. For the messages coming from the Telnet Server, Command line
cannot translate a carriage return command (\r) to a carriage return + line feed command (\r\n).
Therefore, any multi-line Target-to-Controller response (e.g., the response to the FRW? query)
shows as one line, with the latter lines overwriting the previous lines.
To see the full response messages, you can use the HyperTerminal terminal emulation program
configured as a Telnet client. Figure 7-2 shows an example of the login process when using
HyperTerminal as the Telnet interface.
Ethernet Interface Operation
Figure 7-2. Telnet Interface Example – HyperTerminal
LBC-4000 L-Band Up/Down Converter System
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