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$362Mobile Phones Communicate With Cell Towers That Are Placed To Give Coverage Across A Telephone Service Area, Which Is Divided Up Into 'cells'. Each Cell Uses A Different Set Of Frequencies.
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Mobile Phones Communicate With Cell Towers That Are Placed To Give Coverage Across A Telephone Service Area, Which Is Divided Up Into 'cells'. Each Cell Uses A Different Set Of Frequencies.
Once These Few Channels Were In Use By Customers, No Further Customers Could Be Served Until Another User Vacated A Channel. It Would Be Impractical To Give Every Customer.
This Allows Efficient Use Of The Limited Radio Spectrum Allocated To Mobile Services, And Lets Thousands Of Subscribers Converse At The Same Time Within A Given Geographic Area.
A Cellular Network Mobile Phone System Gets Its Name From Dividing The Service Area Into Many Small Cells, Each With A Base Station With (For Example) A Useful Range On The Order Of A Kilometre.
These Systems Have Dozens Or Hundreds Of Possible Channels Allocated To Them. When A Subscriber Is Using A Given Channel For A Telephone Connection, That Frequency Is Unavailable For Other Customers.
A central processing unit (CPU), the processor of phones. The CPU is a microprocessor fabricated on a metal–oxide–semiconductor (MOS) integrated circuit (IC) chip.
The Connection A Call To A Landline Number Or Another Mobile. At The Termination Of The Call The Mobile Operator Would Manually Record The Billing Information.
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