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Ethernet Interface Operation
CDM-760 Advanced High-Speed Trunking Modem
7.3
Telnet Interface
Chapter 8. SERIAL INTERFACE OPERATION
Figure 7-1. Telnet Interface Example – Windows Command-line
The CDM-760 has a Telnet interface for the purpose of equipment M&C via the Serial Remote
Control protocol.
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.
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 and remote
control operation, when you use HyperTerminal as the interface.
Figure 7-2. Telnet Interface Example – HyperTerminal
7–4
Revision 4
MN-CDM760
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