Platform

• Microsoft Windows Mobile 5.0
• Integrated personal digital assistance,tri-band EDGE phone, FM radio, high-resolution camera, Bluetooth, and Wireless LAN

Dimensions

• Approx. 58(W) x 102(L) x 18.5(T) mm
• Weight with battery: 140g

Processor
• Intel PXA272 416MHz

Memory
• Flash ROM: 128MB in total
• RAM: 64MB

Display
• 2.7” TFT LCD display with touch panel
• 240 x 320 dots resolution
• Supports 262K colours (65,536 effective)

Language Supported
• English
• Traditional Chinese (in separate SKU)

Audio
• Stereo speaker
• Speaker with receiver
• Omni-directional mono microphone
• Support speaker phone operation
• Ringtone support: 64-chord MIDI,MP3, WMA, WAV
• Playback support: MIDI, MP3, WMA,WAV, AMR
Keyboard / Button / Switch
• Power button
• Send and End phone button
• Start and O2 MediaPlus button
• Side buttons: Volume up, Volume down, Camera and Recorder
• 5-way navigation buttons: Right, Left, Up, Down and Action

Camera
• Colour 2-mega-pixel CMOS camera
• Preview mirror for self portrait
• White LED strobe flash
• Support still image and video capture
Interface
• Infrared IrDA 1.2 SIR (115kbps at 30cm)
• Mini-USB connector for USB 1.1 connection and power charging
• SIM card slot
• MiniSD memory card slot
• Audio jack (2.5mm Ø)
Notification
• Three-color LED (amber, green and blue)
• Notification by sound, message and vibration
Wireless LAN
• IEEE 802.11b compliant
GSM / GPRS
• Tri-band GSM/GPRS/EDGE:
- GSM900
- GSM1800
- GSM1900
• GSM services
- Speech services with EFR/FR/HR/AMR codec
- Emergency call
- DTMF tone generation
- Call holding, waiting, forwarding, barring
- SMS w/ MT/PP, MO/PP, cell broadcast, text mode, PDU mode
• GPRS / EDGE functionality
- EGPRS class 10
- GPRS CS 1 to 4 coding scheme supported
- EDGE MCS 1 to 9
• SIM function
- 3V SIM operation
- SIM application toolkit
- Over the air provisioning
• Internal antenna
Bluetooth
• Bluetooth SIG version 1.2 compliant
• Supported profiles: headset, hands-free, object push, serial port, dial-up network,
advanced audio distribution (A2DP),Audio/Video Remote Control (AVRCP)
Minimum desktop requirements
• Microsoft® Windows® XP (Service Pack 1 or later), Microsoft® Windows® 2000 (Service Pack 4 or later)
• Microsoft® Outlook® 2000 or later required for synchronisation of email,calendar, contacts,
tasks and notes (Microsoft® Outlook® 2002 recommended)
• Microsoft® Internet Explorer 6.0 or later
• Hard-disk drive with 65MB of available hard-disk space
(actual requirements will vary based on the selection of features and user’s current system configuration)
• Available Infrared or USB port
• One CD-ROM drive
• VGA graphics card or compatible video graphics adapter at 256 colour or higher
• Keyboard
• Microsoft® mouse or compatible input device
Battery

• Removable rechargeable Li-Ion battery, 1,530mAh
Operating time ^
• Standby: 150 hours
• Talk time up to 5.5 hours
AC Adapter
• AC input: 100~240 Vac, 50 / 60Hz
Regulatory
• R&TTE, EMC/EMI, Safety
• BQB certification
• USB v1.1 compliance test
Warranty
• 12 months for main unit
• 6 months for supplied accessories

Nokia 6233 Mobile Phone
Key Features
A small, sleek mobile device with indulgent stainless steel – the perfect balance of features for both business and pleasure
Real time access to information at all times through mobile broadband
High quality sound through stereo speakers
Up to 2054 MB total memory (6 MB internal + 2 GB memory card) for storing Songs, videos, pictures, and messages
2 megapixel camera with 8x smooth, digital zoom and landscape mode
FM stereo Radio,Visual Radio and music player
Enhanced Java email client for easy sending and receiving of information
Spam filter to avoid junk mail
Video, MP3, eACC+, and 64-chord/voice polyphonic MIDI ringing tones

Nokia 6233 Full Specifications
Operating Frequency
WCDMA 2100 MHz and Triband GSM/EDGE 900/1800/1900 MHz
Automatic switching between bands

Nokia 6233 Dimensions
Volume: 81 cc
Weight: 110 g
Length: 108 mm
Width: 46 mm
Thickness (max): 18 mm

Nokia 6233 Display
262,144 colours Active TFT QVGA 320 x 240 pixels display

Nokia 6233 User Interface
New S 40 user interface
Enhanced, easy-to-read interface for quicker navigation
Animated 3D menu and graphics
Side volume keys with the zoom functionality
Dedicated key for camera application

Nokia 6233 Imaging
2 megapixel camera with 8x smooth, digital zoom and dedicated key
Landscape support mode
Print images directly from the phone over a Bluetooth connection or using an MMC (depending on the printer)

Nokia 6233 Multimedia
Integrated video player for download and playback or for streaming: 3GPP, H.263 video, MPEG-4, and AMR
Add video and music to your caller ID
Interactive 3D games with multi-player support
Music player supports MP3, MP4, eAAC+ and AAC music files
Use pre-loaded polyphonic midi ring tones, MP3, eAAC+, and message alerts
OTA download of ringing tones, themes, wallpapers
Download/upload images and video clips
Kodak Photo services for high-quality, easy printing
FM stereo radio
3GPP streaming for mobile access to the latest sports, weather, entertainment, and news information

Nokia 6233 Memory Functions
Up to 2054 MB total memory (6 MB internal + 2 GB memory card)
Supports up to 2 GB of expandable, microSD memory
Back up important files such as presentations and documents, or just store images on your personal mobile storage device

Nokia 6233 Messaging
Common inbox (MMS, SMS, e-mail)
Multimedia messaging: Full MMS 1.2 functionality for sending and receiving messages including video, photos, and music
Improved Java email client with easy settings and spam filter
Email: Supports SMTP, POP3, and IMAP4 protocols
Text messaging: Supports concatenated SMS and picture messaging
Presence: Includes Wireless Village and Dynamic phonebook; know someone’s status before you call

Nokia 6233 Games
Soccer 3D, Rally 3D and Snake III
Download new Java games

Nokia 6233 Java™ Applications
Enhanced Java email client with easy settings and spam filter
Data synchronisation
Visual Radio
Wireless presenter
Notepad and voice memo recorder
Translator
World Clock II
Converter II
Java MIDP 2.0 with Bluetooth API makes downloading new applications easy
Active standby mode

Nokia 6233 Connectivity
Transfer images, video clips, audio files, and other files
Advanced Bluetooth wireless technology: wide range of profiles and APIs for seamless connectivity
Infrared (IR)
USB port
Easy remote or local synchronisation with a PC or other compatible device
Full OMA DRM 2.0 protects copyrighted material
Push to talk over cellular (PoC) lets you use your phone like a walkie-talkie

Nokia 6233 Browsing
WAP* 2.0, xHTML browser over HTTP/TCP/IP stack HSCSD
HSCSD, CSD for browsing and as data modem
3GPP video streaming
*Please note that this service is operator dependent

Nokia 6233 Data Transfer
EDGE* Class 10 (4+1, 3+2): speed up to 236.8 kbps
GPRS (General Packet Radio Service) class 10 (4+1, 3+2)
HSCSD (High-Speed Circuit-Switched Data) transfer up to 43.2 kbps in HSCSD networks
DRM 2.0 for secure content downloading
Speech codec support for FR, EFR, AMR
TCP/IP
*Note that these services require network support.

Nokia 6233 Call Management
Speed dialing: up to 9 names
Last-number redial from dialed calls list (Dial key brings up the dialed calls list)
Automatic redial (max 10 attempts)
Automatic answer (works with headset or car kit only)
Call waiting, call hold, call divert, call timer
Automatic and manual network selection
Caller identification with image
Closed User Group
Fixed Dialing Number, allows calls only to predefined numbers
Conference call (up to 5 participants)
Vibrating alert

Nokia 6233 Voice Features
Nokia Push to talk with dedicated key
Two stereo speakers (each 15 mm x 11 mm)
Nokia Express Audio Messaging
16 voice commands
Integrated handsfree speakers
Voice dialing, 25 preset

Nokia 6233 Power Management
Battery Talk time* Standby time*
Nokia Battery BP-6M-S GSM: Up to 4 hrs
WCDMA: Up to 3.1 hrs Up to 340 hrs

A single shared cable can serve as the basis for a complete Ethernet network, which is what we discussed above. However, there are practical limits to the size of our Ethernet network in this case. A primary concern is the length of the shared cable.
Electrical signals propagate along a cable very quickly, but they weaken as they travel, and electrical interference from neighboring devices (fluorescent lights, for example) can scramble the signal. A network cable must be short enough that devices at opposite ends can receive each other’s signals clearly and with minimal delay. This places a distance limitation on the maximum separation between two devices (called the network diameter) on an Ethernet network. Additionally, since in CSMA/CD only a single device can transmit at a given time, there are practical limits to the number of devices that can coexist in a single network. Attach too many devices to one shared segment and contention for the medium will increase. Every device may have to wait an inordinately long time before getting a chance to transmit. Engineers have developed a number of network devices that alleviate these difficulties. Many of these devices are not specific to Ethernet, but play roles in other network technologies as well.

Carrier-sense multiple access gives us a good start in regulating our conversation, but there is one scenario we still need to address. Let’s go back to our dinner table analogy and imagine that there is a momentary lull in the conversation. You and I both have something we would like to add, and we both “sense the carrier” based on the silence, so we begin speaking at approximately the same time. In Ethernet terminology, a collision occurs when we both spoke at once.
In our conversation, we can handle this situation gracefully. We both hear the other speak at the same time we are speaking, so we can stop to give the other person a chance to go on. Ethernet nodes also listen to the medium while they transmit to ensure that they are the only station transmitting at that time. If the stations hear their own transmission returning in a garbled form, as would happen if some other station had begun to transmit its own message at the same time, then they know that a collision occurred. A single Ethernet segment is sometimes called a collision domain because no two stations on the segment can transmit at the same time without causing a collision. When stations detect a collision, they cease transmission, wait a random amount of time, and attempt to transmit when they again detect silence on the medium.
The random pause and retry is an important part of the protocol. If two stations collide when transmitting once, then both will need to transmit again. At the next appropriate chance to transmit, both stations involved with the previous collision will have data ready to transmit. If they transmitted again at the first opportunity, they would most likely collide again and again indefinitely. Instead, the random delay makes it unlikely that any two stations will collide more than a few times in a row.

The acronym CSMA/CD signifies carrier-sense multiple access with collision detection and describes how the Ethernet protocol regulates communication among nodes. While the term may seem intimidating, if we break it apart into its component concepts we will see that it describes rules very similar to those that people use in polite conversation. To help illustrate the operation of Ethernet, we will use an analogy of a dinner table conversation.
Let’s represent our Ethernet segment as a dinner table, and let several people engaged in polite conversation at the table represent the nodes. The term multiple access covers what we already discussed above: When one Ethernet station transmits, all the stations on the medium hear the transmission, just as when one person at the table talks, everyone present is able to hear him or her.
Now let’s imagine that you are at the table and you have something you would like to say. At the moment, however, I am talking. Since this is a polite conversation, rather than immediately speak up and interrupt, you would wait until I finished talking before making your statement. This is the same concept described in the Ethernet protocol as carrier sense. Before a station transmits, it “listens” to the medium to determine if another station is transmitting. If the medium is quiet, the station recognizes that this is an appropriate time to transmit.

Since a signal on the Ethernet medium reaches every attached node, the destination address is critical to identify the intended recipient of the frame.For example, in the figure above, when computer B transmits to printer C, computers A and D will still receive and examine the frame. However, when a station first receives a frame, it checks the destination address to see if the frame is intended for itself. If it is not, the station discards the frame without even examining its contents.One interesting thing about Ethernet addressing is the implementation of a broadcast address. A frame with a destination address equal to the broadcast address (simply called a broadcast, for short) is intended for every node on the network, and every node will both receive and process this type of frame.

Ethernet follows a simple set of rules that govern its basic operation. To better understand these rules, it is important to understand the basics of Ethernet terminology.

Medium – Ethernet devices attach to a common medium that provides a path along which the electronic signals will travel. Historically, this medium has been coaxial copper cable, but today it is more commonly a twisted pair or fiber optic cabling.
Segment – We refer to a single shared medium as an Ethernet segment.

Node – Devices that attach to that segment are stations or nodes.

Frame – The nodes communicate in short messages called frames, which are variably sized chunks of information.Frames are analogous to sentences in human language. In English, we have rules for constructing our sentences: We know that each sentence must contain a subject and a predicate. The Ethernet protocol specifies a set of rules for constructing frames.
There are explicit minimum and maximum lengths for frames, and a set of required pieces of information that must appear in the frame. Each frame must include, for example, both a destination address and a source address, which identify the recipient and the sender of the message. The address uniquely identifies the node, just as a name identifies a particular person. No two Ethernet devices should ever have the same address.

Ethernet is a local area technology, with networks traditionally operating within a single building, connecting devices in close proximity. At most, Ethernet devices could have only a few hundred meters of cable between them, making it impractical to connect geographically dispersed locations. Modern advancements have increased these distances considerably, allowing Ethernet networks to span tens of kilometers.
Protocols
In networking, the term protocol refers to a set of rules that govern communications. Protocols are to computers what language is to humans. Since this article is in English, to understand it you must be able to read English. Similarly, for two devices on a network to successfully communicate, they must both understand the same protocols.

In 1973, at Xerox Corporation’s Palo Alto Research Center (more commonly known as PARC), researcher Bob Metcalfe designed and tested the first Ethernet network. While working on a way to link Xerox’s “Alto” computer to a printer, Metcalfe developed the physical method of cabling that connected devices on the Ethernet as well as the standards that governed communication on the cable. Ethernet has since become the most popular and most widely deployed network technology in the world. Many of the issues involved with Ethernet are common to many network technologies, and understanding how Ethernet addressed these issues can provide a foundation that will improve your understanding of networking in general.
The Ethernet standard has grown to encompass new technologies as computer networking has matured, but the mechanics of operation for every Ethernet network today stem from Metcalfe’s original design. The original Ethernet described communication over a single cable shared by all devices on the network. Once a device attached to this cable, it had the ability to communicate with any other attached device. This allows the network to expand to accommodate new devices without requiring any modification to those devices already on the network.

We can classify network technologies as belonging to one of two basic groups. Local area network (LAN) technologies connect many devices that are relatively close to each other, usually in the same building. The library terminals that display book information would connect over a local area network. Wide area network (WAN) technologies connect a smaller number of devices that can be many kilometers apart. For example, if two libraries at the opposite ends of a city wanted to share their book catalog information, they would most likely make use of a wide area network technology, which could be a dedicated line leased from the local telephone company, intended solely to carry their data.
In comparison to WANs, LANs are faster and more reliable, but improvements in technology continue to blur the line of demarcation. Fiber optic cables have allowed LAN technologies to connect devices tens of kilometers apart, while at the same time greatly improving the speed and reliability of WANs.

Networking allows one computer to send information to and receive information from another. We may not always be aware of the numerous times we access information on computer networks. Certainly the Internet is the most conspicuous example of computer networking, linking millions of computers around the world, but smaller networks play a role in information access on a daily basis. Many public libraries have replaced their card catalogs with computer terminals that allow patrons to search for books far more quickly and easily. Airports have numerous screens displaying information regarding arriving and departing flights. Many retail stores feature specialized computers that handle point-of-sale transactions. In each of these cases, networking allows many different devices in multiple locations to access a shared repository of data.
Before getting into the details of a networking standard like Ethernet, we must first understand some basic terms and classifications that describe and differentiate network technologies — so let’s get started!

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