How is possible for someone to make a phone call to one another?
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Google Gemini AI
more than 1 week ago
Phone Call Process
1. Dialing and Connection: - When you dial a phone number, the information is sent to your local phone carrier. - The carrier routes the call to the receiver's carrier using the telephone network. - The receiver's carrier connects your call to their phone.
2. Signal Conversion: - The audio signals from your microphone are converted into electrical signals. - These signals are then modulated and transmitted as radio waves, microwaves, or fiber optic pulses.
3. Signal Transmission: - The signals travel through various transmission media such as copper wires, fiber optic cables, or cellular networks. - The signals may be amplified or regenerated along the way to maintain their integrity.
4. Signal Reception: - The receiver's phone receives the incoming radio waves or signals. - The signals are demodulated and converted back into electrical signals.
5. Audio Output: - The electrical signals are amplified and played through the receiver's speaker or headset. - The receiver can hear the caller's voice.
Additional Technologies Involved:
- Switching Systems: Connect calls between different parts of the telephone network. - Codecs: Compress and decompress audio data to optimize signal transmission. - VoIP (Voice over Internet Protocol): Converts voice signals into digital packets and transmits them over the internet. - Call Forwarding: Directs incoming calls to a specified destination, such as a voicemail or another phone number. - Caller ID: Displays the phone number or name of the caller on the receiver's phone.