Technical information

Use Case - Integrated Host (Java) Mode
D-6 AT+i Commands Reference Manual May 31, 2008
• Port numbers are not manipulated.
In addition, the IP packet's TTL field is decremented and the TCP and IP checksums are
re-calculated.
Use Case - Integrated Host (Java) Mode
W24 together with G24 supports functionality as Integrated Host (Java) (see Figure D-3).
In this mode Java (inside of the G24) takes role of a Host. Via the USB or UART1 port of G24,
Java (MIDlet) is able to send to W24 AT+I commands, meaning to configure and control it as for
example a Host/Terminal. More then this, Java is able to make a Cellular (GSM/GPRS)
connection and control a data traffic from/to the connection. So, the G24's Java together with
W24 capabilities will be able to operate as a gateway between the two supported by W24
networks.
Figure D-3: Integrated Host (Java) Mode
In this mode W24 coupled with G24 can be used without any host connected, as a standalone
device.

UART
USB/H
UART#1
USB/D
GPIO
IGN,ON/OFF
CTL
Mic,SPK
Audio
W24
GPIO
SIM
SIM
UART#2
USB/H
UART#0
SPI
UART#1
G24
USB/D

UART#2
UART
Cellular
Network
WiFi
Network
Host
Java