More details and requirements will be described for production of phone

More details and requirements will be described for production of phone
When the user input on the phone number, and press the "OK" or "Send", the phone sent to the base station random access channel pulse. Base station through the subchannels access in the public control channel allows the channel to answer the phone requests. Phone to receive the access grant channel, follow the instructions, go to the specified RF channel number and time slot, two-way communication with the base station in a separate dedicated control channel: mobile phone first to receive independent slow dedicated control channel with the channel control channel, the base station to adjust the timing and power control signal, after the base station from the random access channel pulse arrival time to calculate the correct timing to adjust the time. Received timing adjustment time, the phone can send a normal length of the pulse. This set of intelligent management phone system will record any operation of the system.
Independent dedicated control channel two-way communication channel to complete the ringing response and identification process. 1 ~ 2 seconds later, the phone will go to the business channel from stand-alone dedicated control channel and voice data communication. The base station first on the public control channel, paging channel subchannel to send a paging message contains the phone number to find. The mobile phone receives a paging message, a random access channel signal loopback. The following process is the same as the phone call initiated process. Currently on the market some of the major platforms of Moto, Philip, Infineon, ti, adi, skyworks, mtk, Spreadtrum and so on. The administrator can realize controlling and managing the whole intelligent management system of phone through the main control software in the main control computer.MTK occupies the largest market share (in the mainland accounted for more than 60%). MTK (Taiwan MediaTek Technology) platform advantages: low cost. This is the industry are well aware, is also a lot of businesses first consideration. MTK platform or lower than others, an analogy, when another phone to do $ 80, MTK can be done less than 50 dollars, especially taking into account the cost of time will make the MTK have the whole of the price advantage is obvious. The training can enable the user to comprehensively know the intelligent management system of school phone .First, that the RF performance. MTK's the bottom and top of the software is relatively uniform, the improvement of RF performance and very good impact. Coupling sensitivity of some other platform for mobile antennas are generally only around-104dBm, if you can do-107dBm, that which is good. MTK platform, as long as your antenna similar, are generally below-107dBm Secondly, software stability, earlier in the software development workers are aware inevitable crashes, sometimes it is easy to die. Sometimes, in order not to crash too much on the reduction function. MTK mobile phone software is a lot of code written in a global variable, to avoid memory leaks, crashes rarely.