EXFO FTB-2 - Manual (Page 427)

Communicating Through TCP/IP over Telnet
FTB-2 and FTB-2 Pro 417
Internal Commands of the TCP/IP over Telnet Protocol
CLEAR LOGS
Syntax: CLEAR LOGS
This command clears all the client and server log files that are older than
36 hours (default value) from the time you execute the command.
Note: You can also delete the logs manually via the file explorer. The client and
sever logs are kept respectively in the C:\ProgramData\EXFO\SCPI Over
TCPIP Logs\Client log and in the C:\ProgramData\EXFO\SCPI Over TCPIP
Logs\Server log folders.
CLOSE
Syntax: CLOSE
The CLOSE command terminates the current Telnet session.