source:truck tracking webfleet solutions release time:2023-07-14 Hits: Popular:realtime gps tracker online
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????The mobile engineering mode, as the name suggests, refers to the mode of the mobile phone in the engineering testing state. It is designed for the engineering personnel or mobile engineers responsible for maintaining the system at the mobile base station to determine various communication parameters. Based on the relevant values in the engineering mode, engineers do not need to rely on large-scale maintenance and control equipment to accurately grasp the situation of the base station.
????Normally, the mobile engineering mode is hidden and "transparent" to the general user. However, some mobile phone users like to use the mobile phone engineering mode to study the location of mobile phone base stations, signal strength, battery voltage, and other contents, just like mobile phone engineers. In fact, turning on engineering mode will not have any impact on the use of the phone, but improper operation in engineering mode can cause damage to the phone. Therefore, when the engineering mode is turned on, there is no significant difference in the use of the phone compared to before, except that many previously unavailable menus and options will appear. There are various methods to enable mobile engineering mode, and we will not specifically introduce them here.
????Taking the NOKIA mobile phone engineering mode as an example, the following will introduce several parameters related to this article.
????LAC - Local Area Code
????CID - Base Station Number (CellID), listed together with Sector ID
????CH channel number, the range of GSM900 is 1-124, and the range of BC GSM1800 is 512-885
????TA - Time Advance, which displays the distance between the phone and the base station. Multiplying this value by 500 can be converted to meters, but due to the influence of radio wave reflection and absorption, the TA value is only for reference, with a range of 0-63
????RxL signal reception strength, unit: - dBm, range from -110 to 0
????TxPwr - displays the power emission level of the phone during a call, with a display range of 0-19
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