User's Manual

4. SOFTWARE CHARACTERISTICS
4.1 Introduction
H18T uses the cutting edge technique of Qualcomm 3.5G (HSDPA) wireless communication. It
is a wireless data card product embedded in any host device which has mini-PCI Express
interface. The software platform is Qualcomm QSC6270. It uses USB interfaces to
communicate with PC/NB. The USB interfaces are composed of three parts “NDIS interface”,
“Customized AT command Interface” and “GPS command Interface”. “Network app” use
NDIS interface to transmit Internet data between H18T device and Host device. Dashboard
(“SMS, phone book, query network mode, and network status”) can send the AT commands
to drive H18T device by “AT command Serial COM port”, and H18T provides dual com port.
Factory test app also uses AT command interface to test H18T functionality in the factory.
4.2 Software Architecture
The H18T product high-level software architecture is represented in the following figure:
(High Level Software Architecture)