The Global System for Mobile Communications Service is the most widely adopted, digital cellular technology in use today. CDMA uses code division techniques (CDMA) to optimize the call carrying capacity of a wireless network. CDMA also provides a number of carefully standardized and broadly supported capabilities.

2.5G mobile communication technology (CDMA 1x) has become widely used of industrials and utilities in recent years and many customers are seeking reliable, flexible and cost-effective data channel to build their information system. Many applications such as ATM, POS, SCADA and surveillance system will require data channels covered all country; this brings a bright future for CDMA 1x data networks applications.Requirements towards information system are varied because of different features of numerous industrial applications. Mobile telecom service providers are required to provide industrial application solutions not only meeting common specifications and also individual special ones.