EXFO FTB-500 - Manual (Page 428)

Communicating Through TCP/IP over Telnet
420 FTB-500
Executing SCPI Commands Over Telnet
4. Under Communication Type, select TCP/IP.
5. Click or tap Apply, and then OK.
6. Depending on the unit you are using, restart either IQS Manager,
ToolBox, or ToolBox X.
Executing SCPI Commands Over Telnet
You can remotely control the modules by executing SCPI commands
through TCP/IP over Telnet. The commands are sent remotely from the
Telnet client (on a computer) to the Telnet server (in this case, the IQS or
FTB unit).
To execute a single SCPI command, you can type or paste the command
directly in the Telnet editor window.
To execute multiple SCPI commands (script), you must enclose them
within a BEGIN and END block in the Telnet editor window.
You can connect from a remote Windows client or a Linux (or Unix)
remote client.
Note: The Telnet client is available on the FTB-500, FTB-2 Pro, and IQS-600
controller if you intend to use these units as computers to connect to a
Telnet server. However, on an FTB-2, the Telnet client is not available. You
must use the PuTTY application to establish communication.