AT Commands Reference Manual - wireless netcontrol GmbH

TCP/IP: MIP Commands Using Cases
OK
+MIPCALL: 2,1,"172.18.38.35"
The user can get information about an already activated PDP context by +MIPCALL 'read'
command, as follows:
AT+MIPCALL?
+MIPCALL: 1,1,"172.16.194.255"
+MIPCALL: 2,5,"172.18.38.35"
OK
An active PDP context can be deactivated either by the user or by the module (Network). When
the module receives a PDP context deactivation message from the Network, or detects a SIM card
was removed, it informs the user about a PDP context inactive by sending "+MIPCALL:
,0" unsolicited response for each active CallID.
Socket Operations
Open/Close a Socket
Actual MIP implementation supports up to 20 socket id's, each of them may be used to open a
TCP (active or listen) socket as well as opening a UDP socket. The following example
demonstrates how to obtain a list of unoccupied sockets by +MIPOPEN 'read' command.
AT+MIPOPEN?
+MIPOPEN: 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20
OK
The user is able to open a socket (available from the list above) by +MIPOPEN 'set' command, as
shown below (assuming, that a PDP context was successfully activated by +MIPCALL with 'call
id' parameter = 1).
AT+MIPOPEN=1,1,1080,"www.google.com",80,0
OK
+MIPOPEN: 1,1,1
As shown in this example, socket id = 1 is opened, with the following parameters:
protocol:
TCP
local port: 1080
remote port: 80
remote network address: www.google.com
After the socket open process is initiated, its id is removed from list of unoccupied sockets. At
this stage, the unoccupied sockets' list will look as follows:
AT+MIPOPEN?
+MIPOPEN: 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20
OK
Let's open one more socket:
AT+MIPOPEN=1,3,1082,"www.yahoo.com",80,0
OK
+MIPOPEN: 1,3,1
Now, the list of unoccupied sockets will look, like this:
AT+MIPOPEN?
4-22 H24 - AT Commands Reference Manual April 15, 2010