Comtech EF Data CRS-500, Installation And Operational Manual

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CRS-500 1:N Redundancy System
Revision 4
Ethernet Interface Operation 9–4 MN-CRS-500
9.3 Telnet Interface
Chapter 10. SERIAL INTERFACE OPERATION
The CRS-500 provides a Telnet interface for the purpose of Equipment M&C using the standard
serial interface remote command and query protocol. See
Chapter 10. SERIAL INTERFACE
OPERATION for detailed information about using remote command and queries.
9.3.1 Using the Telnet Interface for Remote Control Operation
Figure 9-1. Telnet Interface Example – Windows Command-line
Telnet is implemented in the Ethernet M&C in a "Telnet wrapper." When the user ‘Telnets’ to the
unit, it emulates a local EIA-232 or EIA-485 serial connection. You can then type the same
command or query syntax that you would use from a serial remote terminal and the Ethernet
M&C "unwraps" the Telnet packet and sends it on to the CRS-500 system, which responds to it
as if it was a serial remote command.
The Telnet interface requires user login. The default user name and password are comtech. Upon
login, you have access to the serial-based Remote Control Interface.
Figure 9-1 shows an
example of the login process and remote control operation.