Because 1. The second generation mobile phone has won the favor of consumers because of its compactness, convenience and versatility, and the third generation mobile phone has also been launched. It is more powerful in functional design, covering bus toll collection machine, catering toll collection machine, member toll collection machine, scenic spot toll collection machine, parking lot toll collection system and so on. This is a great progress in realizing the city card.

City card system is no longer a single occasion, it must be able to meet different needs at the same time, different needs require different functions, and the realization of different functions requires setting different parameters in various machines. Therefore, a powerful handset that can meet all kinds of requirements must have a set of flexible parameter settings to meet all kinds of functional requirements; Moreover, this set of parameters can also deal with special situations and meet special functions in special occasions, which requires a set of parameters to have flexibility in dealing with special situations and so on.

In order to be more compatible with these functions, a set of parameter files with its own characteristics has been verified after a long period of discussion and experiment in parameter design. This parameter file is compatible with powerful functions such as downloading parameters, modifying settings and upgrading hardware. Functionally, seven consumption patterns are designed, which can be used separately or mixed, and a set of parameters can simultaneously integrate up to 16 consumption patterns. For example, a bus charging system can make the bus have the basic functions of ordinary consumption, discounted consumption, limited consumption, transfer discount, integral consumption and free consumption at the same time; It is also possible, for example, when a bus leaves the customs and other platforms and needs another toll price, then the bus toll collector can directly press the switch button and convert it into the required toll price for deduction without the cumbersome operation of downloading the parameters again. This operation can switch the charging price of 16 at most.

By reading the operation authorization card and entering the password, the mobile phone has higher security; In addition, there are shortcut keys to enter the consumption interface, which is convenient for users to use.

Function use, each consumption mode is different, the function is different, the consumption steps used are the same, there are not many complicated and redundant operation steps, and there are good text prompts and friendly interfaces; In some functions involving unity and integrity, such as data manipulation, you must have sufficient authority to operate them.