Unformatted text preview: service providers are cellular telephone providers. This means that the BlackBerry wireless systems use the same method of communications as the cellular network shown on Figure 7.10 on page 216 of our text. The sequence is as follows (example shown is for sending a message, use the reverse sequence for receiving a message):- the user enters the message into the BlackBerry and pushes ‘send’- the message is sent from the cell phone using radio waves to the nearest radio receiver in the cellular network (in this case Rogers)- the message would be switched via radio waves to the nearest radio receiver or converted for sending via the Rogers cable network (instead of the telephone network)- the message would be converted to radio waves at the radio antenna closest to the receiver of the message - radio waves are used to send the message to the receiver of the message...
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- Spring '09
- BlackBerry, fibre optic cables, nearest radio receiver