User manual

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AT+ IPTCP =23,”S”,255.255.255.255”,0

to set the modem to wait for TCP socket connection request

(Server (listening) mode)

any calling IP address allowed, port 23 (for main UART)

AT+ IPTCP =?

+IPTCP: (0-65535),("C","S"),(120),(0-1)

Note : possible argument

Defined Values:

<port>

The port number to be used for the TCP socket connection. Default value is 0. Valid range is 0 to 65535.

<mode>

Mode of TCP operation. Default value is “S”.

“S” Server (Listening) mode. This configures Maestro 100 2G to open a listening TCP connection on the specified

<port> . The TCP connection will be active upon getting socket connection request from the allowed remote TCP peer

(see <address>)

“C” Client (caller) mode. This configures Maestro 100 2G to request opening a TCP connection to the server with the

specified <address> and <port> .

Note: This parameter is used by Auto TCP connection (see Chapter 4) only.

The address of the TCP server (or host). Default value is empty. Legal values could be 32-bit in dotted-decimal notation

(i.e. xxx.xxx.xxx.xxx) or alphanumeric ASCII test string up to 120 characters (only if DNS is available on the GPRS

network)

Note: In “Server” (Listening) mode the modem will only accept TCP connection request for the caller with address

specified in the <address> field. Yet if the it is set to “255.255.255.255” the modem will accept request from ANY

address.

This parameter determines if there is time delay introduced before sending a TCP frame that has not been entirely filled

with user data. If it is set to 0 initiates the sending of a TCP frame as soon as possible after the reception of a single

character value from the host. If it is set to 1 initiate a delay will be introduced before the sending of a TCP frame

The default value is 0.