Technical information

Telnet Client
2-30 AT+i Commands Reference Manual May 31, 2008
Telnet Client
+iTOPN - Telnet Open Session
+iTRCV - Telnet Receive Data
+iTSND - Telnet Send Data Line
Syntax: AT+iTOPN:<server>
Opens a Telnet link (socket) to a Telnet server on port 23.
Parameters:
<server> Logical name of the Telnet server or the server's IP address.
Command Options:
<server> The server name can be any legal Internet Server name that can be resolved
by W24's DNS (Domain Name Server) settings. The server name may also
be specified as an absolute IP address given in DOT form.
Result Code:
I/OK Upon successfully connecting to the remote Telnet server.
I/ERROR Otherwise.
Syntax: AT+iTRCV[:<max>]
Receives data from the Telnet server.
Parameters:
<max> Optionally specifies the maximum number of bytes to transfer.
Result Code:
I/ERROR If no Telnet session is open or otherwise some error has occurred.
Returns: I/<sz>[:<binary data stream>]
where,
<sz> is the exact size of the binary data stream to follow.
If the socket input buffer is empty, W24 returns I/O. In this case the (:) and
<binary data stream> are omitted.
<sz> is guaranteed to be equal or less than <max>, when specified.
Syntax: AT+iTSND:<data line>
Sends data to the remote Telnet server.