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Nokia 6820 (AT&T)
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| Nokia 6820 (AT&T) | ||
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| Company | Nokia | |
| Website | http://www.nokia.com | |
| Description | ||
| The full-featured Nokia 6820 is a solid phone and is sure to please text-messaging fans. | ||
| Specifications | ||
| Cingular Wireless, GSM 900/1800/1900 (Tri-Band), Up to 420 min, With digital camera, 3.5 oz | ||
| Introduction to Cellular and GSM communications | ||
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Cellular is one of the fastest growing and most demanding telecommunications applications. Today, it represents a continuously
increasing percentage of all new telephone subscriptions around the world. Currently there are more than 45 million cellular
subscribers worldwide, and nearly 50 percent of those subscribers are located in the United States. It is forecasted that
cellular systems using a digital technology will become the universal method of telecommunications. By the year 2005,
forecasters predict that there will be more than 100 million cellular subscribers worldwide. More » |
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| GSM/GPRS modems and modules | ||
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A GSM modem is a wireless modem that works with a GSM wireless network. A wireless modem behaves like a dial-up modem. The
main difference between them is that a dial-up modem sends and receives data through a fixed telephone line while a wireless
modem sends and receives data through radio waves. A GSM modem can be an external device or a PC Card / PCMCIA Card.
Typically, an external GSM modem is connected to a computer through a serial cable or a USB cable. A GSM modem in the form
of a PC Card / PCMCIA Card is designed for use with a laptop computer. It should be inserted into one of the PC Card / PCMCIA
Card slots of a laptop computer. Like a GSM mobile phone, a GSM modem requires a SIM card from a wireless carrier in order to
operate. More » |
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| Mobile Phones | ||
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Cellular phone customers clearly have many different service choices that they did not have several years ago. Furthermore, it
is inevitable that as the technology evolves, the quality of service will increase and the equipment cost will decrease. Older
technologies will become cheaper as newer technologies are introduced to the global market. More » |
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| Short Message Service (SMS) | ||
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The Short Message Service (SMS) allows text messages to be sent and received to and from mobile telephones. The text can
comprise words or numbers or an alphanumeric combination. SMS was created as part of the GSM Phase 1 standard. The first short
message is believed to have been sent in December 1992 from a PC to a mobile phone on the Vodafone GSM network in the UK. Each
short message is up to 160 characters in length when Latin alphabets are used, and 70 characters in length when non-Latin
alphabets such as Arabic and Chinese are used. More » |
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| Multimedia Messaging Service (MMS) | ||
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Multimedia Messaging Service (MMS) is also called media messaging and picture messaging. The range of names are matched only
by the range of possibilities that mms gives the user. It is now possible to send photos, sound and animations to other mobile
users. no longer will you have to use a :-) face to show your happiness. You can simply take a picture and send it to a friend
with a compatible mobile. More » |
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| SMS and MMS Providers | ||
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SMS messages are transferred between mobile phones via a Short Message Service Center. The SMSC is software that resides in
the operators network and manages the processes including queuing the messages, billing the sender and returning receipts if
necessary.
An MMS message can contain any combination of graphics, photographic imagery and audio. Multimedia Messaging Service (MMS) is
an end-to-end solution enabling operators to deliver a rich MMS experience to customers. More » |
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| General Packet Radio Service (GPRS) | ||
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General Packet Radio Service (GPRS) enabled networks offer 'always-on', high capacity, internet-based content and packet-based
data services. By being 'always-on', users do not need to dial up for internet access like they do when using wap. This
enables services such as colour internet browsing, e-mail on the move, powerful visual communications, multimedia messages
and location-based services all through the handset. Although not as powerful as 3g, gprs offers a cost effective alternative
that can transform the world of communication. More » |
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| Bluetooth | ||
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Bluetooth wireless technology revolutionizes the communication market by providing freedom from wired connections, in effect
creating a world without wires. This technology enables users to link between computers, mobile phones, portable handheld
devices, and provide connectivity to the internet. More » |
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| Java | ||
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Java is a computer language and software platform (like windows, for example). the benefit of java applications is can be
created on one device but used on a variety of others such as computers, television and mobile phones. With classic arcade and
latest title games now available for java enabled phones, mobile phones have been transformed in to much more than a
communication device. More » |
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| Mobile Communications Software | ||
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There are many mobile communication software packages available today. We collected the best software and grouped them in
different cateogries More » |
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