Sony Ericsson GR64 - Manual (Page 84)

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9 TCP/IP Stack
An on board IP/TCP/UDP stack has been integrated into the software negating the
need for the customer to implement one in their own code base.
This is accessible by using an embedded application (see section 9) using intrinsic
functions.
9.1 Implementation
The following types of commands allow various functions:
• Open/closing IP connections - Negotiates/closes an IP address with the web
server.
• Send/Receive TCP packets - Performs all TCP operations to send and receive
packets.
• Send/Receive UDP packets - Performs all UDP operations to send and receive
packets.
• Resolve URL to an IP address - Similar to nslookup command in DOS When the
unit is set up and controlled using the embedded applications.
The embedded applications or an external application can generate data to be sent
and pass it to the wireless modem for transmission.
This effectively provides a transparent communication link from the application to an
internet server over GPRS.