When we make phone calls using our phones, they also establish connections with other phones or network devices through signal towers. This process involves some key technologies, such as signaling protocols and voice coding.
Firstly, the mobile phone will establish a connection with the nearest signal tower through radio signals. Then, the signal tower will convert the signaling protocol sent by the phone into a suitable transmission format and transmit it to the target phone. During the call, voice signals are converted into digital signals and compressed and packaged using speech coding technology for easy transmission and storage. At the same time, the signaling protocol also performs voice quality control and connection maintenance during the call process.
In summary, the principle of using a mobile phone to access the internet and make calls through a signal tower can be summarized as follows: the mobile phone establishes a connection with the nearest signal tower through radio signals, and then achieves data transmission and voice communication through various technologies and protocols. This process involves multiple stages and technologies, each with its specific role and function. It is precisely the continuous development and innovation of these technologies that have made our phones increasingly intelligent and convenient.
