EXFO FTB-2 - Manual (Page 416)

Communicating Through TCP/IP over Telnet
406 FTB-2 and FTB-2 Pro
Features
Features

A client from any operating system (Windows, Linux, or Unix) can use
the freely available Telnet components to connect to the service.

A client can connect to multiple modules at a time.

A user can connect to multiple modules through single/multiple
sessions.

A client can execute single commands or a batch of commands.

A user can disconnect any client/session that is already connected.