How a mobile phone

In mobile phones, there is a speaker, microphone, keyboard, display screen, and powerful circuit board with microprocessors that make each phone like a mini computer. When connected to a wireless network, a set of technologies that allows users to make calls or exchanging data with another phone or a computer.

Wireless networks operate in a network that divides cities or regions of cells into smaller ones. One cell covers several city blocks or up to 250 square miles. Each cell uses a set of radio frequencies or channels to provide services in specific areas. This radio strength must be controlled to limit the geographic coverage. Hence, the same frequencies can be reused in nearby cells. So many people can have conversations simultaneously in different cells in the entire city or region, even though they are in a channel.

In each cell, there are basic stations containing wireless antennas and other radio equipment. Wireless antenna in each cell will menghbungkan caller to local telephone networks, the Internet, or other wireless networks. Mentransimiskan wireless antenna signal. When the cell phone turned on, calls will be looking for a signal to confirm that the service had been available. Then the phone will transmit a specific identification number, so the network may verify the customer information-such as wireless service providers, and telephone number.* Calls from mobile phones to call home

When making calls from mobile phones to a regular home phone, the call is going to walk in through a nearby wireless antenna and will be modified by conducting wireless to traditional landline phone systems. The call will then be immediately directed to the traditional telephone network and to the people who call goals.

* Calls from Phone to Phone Handheld Handheld

When making a call from this, the call will be routed through the landline network to the wireless delivery to the recipient or routed within the wireless network to the nearest cell with the objectives of the call. While talking on a cell phone, the mobile phone will capture the sound and change the sound to radio frequency energy (radio waves). radio waves will travel through the air to find the recipient at the nearest base station. Base station then sends the call through a wireless network up to the people who become destination phone.

* Long-distance calls

when making a call to someone who is very far away, the call will be routed to the remote historical exchange center, which connect calls between countries or around the world via fiber optic cable.