EXFO FTB-2 - Manual (Page 429)

Communicating Through TCP/IP over Telnet
FTB-2 and FTB-2 Pro 419
Internal Commands of the TCP/IP over Telnet Protocol
CONNECT LINS
Syntax: CONNECT LINS
You must specify the unit number and the slot number identifying the
module to which the session will connect.
This command allows to connect to different modules through TCP/IP. You
can connect to multiple modules from a single session.
If the command is not executed successfully, the possible reasons could
be:

The module is already connected to a different client session.

The module is not present at the specified position.

The provided information does not correspond to a valid LINS.
Note: For backward compatibility reasons, to connect to a single module, you do
not have to use the CONNECT LINS command. A valid instrument
command (for example, Lins10:SOURce:DATA:TELecom:CLEar) for a valid
LINS position will work for a first module. However, you will need to use
the CONNECT LINS command if you want to connect to other modules as
well.