only look for one type of data at a time. To set up a listening server using UDP, enter the
following command:
AT^IPLISTEN=”UDP”, 5008
In this example the modem will monitor UDP port 5008 for data. If it receives data, it
responds with the ^IPDATA command. When data appears, the modem will signal the
host as follows:
^IPDATA: 3, 8, testdata
In this example 3 represents the link ID, which can be from 1-5; 8 is the number of
characters in the data, and testdata is the actual data that was sent. The number of
characters sent can range from 1 to 1500.
If the listening server is already running, the modem will respond as follows:
+CME ERROR: The server has been established already
To set up a listening server for TCP data, enter the following command:
AT^IPLISTEN=”TCP”, 6010
In this example, the modem is monitoring port 6010 for TCP data. For more information
about the AT^IPLISTEN command, please refer to the Huawei AT Command manual
available at www.zoomtel.com/4575support
.
Sending Data with your Modem
Before you send data, you need to open up the connection using the ^IPOPEN
command. You can open up to 5 different connections at a time. For example, you open
a TCP and UDP connection to your server by entering the following commands:
AT^IPOPEN=1,”UDP”,”WWW.MYSERVER.COM/DATA”, 5005, 5010
AT^IPOPEN=2,”TCP”,”WWW.MYSERVER.COM/DATA”, 5005, 5010
In this command 1 is the link id for the UDP connection and 2 is the link id for the TCP
connection. WWW.MYSERVER.COM/DATA is the address of your server where you
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