Technical information

Chapter 1: Introduction to AT+i Commands
May 31, 2008 AT+i Commands Reference Manual 1-9
Telnet Client
TOPN Telnet open session Opens a Telnet session to a remote Telnet server. If W24
is not online, it is connected.
TRCV Telnet receive Receives data from a remote Telnet server.
TSND Telnet send line Sends an ASCII data line to a remote Telnet server.
TBSN[%] Telnet send binary stream Sends a binary data stream to a remote Telnet server.
TFSH[%] Telnet flush Flushes a Telnet socket's outbound data.
TCLS Telnet close Closes a Telnet session.
File Transfer Protocol (FTP)
FOPN Open FTP link Opens an FTP command socket to a remote FTP server.
If W24 is not online, it is connected. Once an FTP link is
established, it can be used to carry out operations on the
server's file system.
FOPS Open secure FTP link Opens an FTP link and negotiates an SSL3/TLS1
connection on the control channel. All following FTP
operations in this session are performed over an
SSL3/TLS1 connection.
FDL FTP directory listing Retrieves the remote FTP server's file directory listing.
The full server-dependent listing is returned.
FDNL FTP directory name list Retrieves the remote FTP server's file directory listing.
Only file names are returned.
FMKD FTP make directory Creates a directory on a remote FTP server.
FCWD FTP change directory Changes a remote FTP server's current directory.
FSZ FTP file size Retrieves the size of a file stored on a remote FTP server.
FRCV FTP file receive Downloads a file from a remote FTP server.
FSTO FTP file store Opens a file for upload to a remote FTP server. If the file
already exists, it is overwritten.
FAPN FTP file append Opens a file on a remote FTP server for appending. If the
file does not already exist, it is created.
FSND FTP file send Sends data to a file on a remote FTP server. The file must
be already open by a previous FSTO or FAPN command.
FCLF FTP close file Closes the currently open file on an FTP server. Any data
uploaded to the file with the FSND command is retained
on the server.
FDEL FTP delete file Deletes a file from a remote FTP server's file system.
FCLS FTP close Closes a FTP link.
Table 1-1: AT+i Commands by Category (Cont.)
Command Function Parameters/Description