Technical information

Use Case - Host Mode
D-2 AT+i Commands Reference Manual May 31, 2008
The W24 WLAN station associates with an Access Point (AP) according to the following rules:
1. Scan and locate all AP's with a specific SSID
If an SSID is not specified, scan and locate ALL available AP's.
2. Connect to the strongest signal AP from the AP's above.
When the W24 is connected via an AP it will attempt to acquire an IP address from a DHCP
server, if its DIP (Default IP) is set to 0.0.0.0. If a DHCP is located and used to acquire the IP
address, the Sub-net, Gateway and DNS servers shall also be assigned.
When the DIP is set to an IP address, W24 will use that address and not try to locate a DHCP
server. In this case the Sub-net, Gateway and DNS serves must also be assigned manually.
In general, configuring the W24' WLAN communication platform, requires the following
settings:
If the AP is connected to a Corporate LAN that has a Gateway to the public Internet, AT+i
commands, such as AT+iRLNK:"http://www.google.com/" may be activated in exactly the same
way as shown when using the cellular communication platform. The results shall be the same.
Additional advance configuration parameters allow the W24 to be configured for WEP or
WPA1/WPA2 security on the WLAN.
In order to use the GSM/GPRS platform W24 must be notified to switch communication
platforms:
Command Response Comment
AT+i CP F= 1 I/O K
I/ONLINE
The W24 is switched to the WLAN
communication platform.
Command Response Comment
AT+iWLSI=<SSID
string>
I/OK Setup the required SSID string to use
when locating an AP. If this parameter
is left blank, W24 will connect to the
strongest signal AP.
AT+iDIP=0.0.0.0 I/OK Configure the W24 to use a DHCP
server.
AT+iDOWN I/OK
I/ONLINE
Recycle the connectivity for new
parameters to take effect.
AT+iIPA? 172.3.86.192
I/OK
Verify that W24 has connected to AP
and received a valid IP address from
the DHCP server.