|Mobile & Cell Phone Information|
Letting Go of 3G - A Viable Alternative for Asian Carriers
Most Asian cellular carriers mulling over 3G have chalked out at least tentative transition paths towards that Holy Grail. If they're GSM networks, it's a safe bet EDGE (Enhanced Data for GSM Evolution) is being considered, to replace/augment GPRS for high speed data services. Because EDGE uses a new modulated scheme that is also used for UMTS/3G, EDGE becomes a sort of half-way house to 3G.
The cost to introduce 3G into an existing GSM network is enormous. A large portion of 3G's non-license related costs pertain to new nodes patched into an existing GSM network to make it 3G compliant. And of course, these new nodes need to inter-operate with existing 2G and 2.5G nodes.
An alternative does exist, that until recently dare not speak its name. Marrying cellular and WiMax/WiFi clouds, is not just cheaper, but more in keeping with the times. Besides the cost benefits, such a union addresses two other big issues: bringing high speed data services with laser like precision to the urban users who need them and voice connectivity over cell phones to suburban residential homes with poor cellular reception.
Integrating selected WiFi Hot spots or WiMax Hot Zones into a cellular network requires an IP Network Controller (INC), an IP access network, a patch to allow the Wireless LAN (WLAN) access network to issue the relevant accounting information to the cellular cloud's AAA (authentication, authorization, and accounting) server and an investment in IP roaming. Barring a few more widgets, that's essentially it.
Given the simplicity of such a solution, anyone who has seen engineers sweat over cell site deployment or attempted to work the math behind the cellular hex grid, has to wonder why the cell phone-wallahs have not already adopted WiFi/WiMax at their peripheries.
One however continues to sense discomfort in cellular circles over any open discussion on WiFi/WiMax. This may have something to do with the fact that the same user who demands everything be free on the Internet, is more than willing to pay a premium for his mobile service. The cellular carrier therefore, is understandably wary of encouraging bad habits in his paying customers.
Kineto, an equipment manufacturer, explains how such an eco-system would work.
- A subscriber with a WLAN, dual mode mobile phone moves within range of an access point to which the handset can connect.
- On attaching, the handset contacts the mobile operator's INC over the IP access network, to be authenticated and authorized for mobile service access.
- If approved, the INC updates the subscriber's location information in the network. From that point on, all mobile traffic is routed via the INC and over the IP access network. The subscriber is now on Voice over Broadband (VoB) and on a lower fixed line / VoB type tariff.
- When the subscriber moves outside the range of the serving access point, the INC facilitates roaming to the licensed outdoor network. The roaming process is completely transparent to the mobile subscriber.
- In addition, if a subscriber is on an active voice call or handset data session when they come within range (or out of range) of a service access point, the INC facilitates the handover of the active call between networks. The handover is completely transparent to the mobile subscriber.
- The WLAN access network issues the relevant accounting information to the cellular network's AAA server. This accounting information can then be incorporated into the operator's specific CDRs enabling it to be assimilated into the operator's existing legacy billing system, creating a single bill for Cellular and WLAN usage.
In divvying up responsibilities, the WLAN provider manages the network while the mobile operator looks after customer care and billing. The end-user pays his mobile operator for the usage of the WLAN. The charges for using a cell phone over a WLAN would be lower than cellular use but in most cases it would be incremental revenue that the cellular companies would otherwise lose to fixed-line or VoB networks.
The cellular-WiFi/WiMax eco system also ropes in homes and offices equipped with broadband. To connect, the home or office user goes to his mobile provider's web portal and registers his WLAN into the IP Network Controller (INC). The subscriber's cell phone is now patched into the WLAN and on a lower fixed line / Voice over Boradband (VoB) type tariff.
While there is growing competition in the VoB sector, only the cell phone operator decides whether the customer can get a combined cellular+VoB bill. A mobile provider's Cellular-WLAN service shall therefore, stand head over shoulders over any Vonage type VoB service.
As we have seen, in a Cellular-WLAN eco system devices intelligently pick and choose from the wireless network offering the strongest signal or lowest price in a given area. It is a compelling picture that demands the cellular operator's attention, more so in Asia.
BRAHAM SINGH joined PCCW in January 2001 and founded their international IP backbone & service company now called BtNAccess after its merger with Corporate Access, one of Asia's largest satellite based service provider. Today, BtNAccess is an established global carrier, offering enterprise & carrier grade services over its MPLS enabled network. Services offered include IP transit, MPLS data circuits/VPNs, voice as well as a leading edge Hosted IP PBX services. The Company is interconnected with 35 carriers globally and its revenues come from an enterprise and carrier customer base in The USA, Europe, Middle East, Africa and Asia.
Braham came to PCCW from Teleglobe, where he was the Vice President in charge of Asian operations. Prior to Teleglobe, Braham was the Vice President - SE Asia for Sprint / Global One.
Braham has various pioneering achievements to his credit including the first call- back as well as the first ISR launch in Hong Kong, the first Asian frame relay launch outside Japan, the first international connectivity provided to Celcom in Malaysia in 1992.
Recycling Mobile Phones
Recycle Cell Phones
Cell Phones Safety - Are They a Risk ?
Cell phones are everywhere and I believe they are here to stay. With the advent of cellular phones for public use came a whole host of issues that I don't think anyone expected, at least not in the magnitude we are seeing today. There are two kinds of cell phone safety and then there is cell phone etiquette. There is practical cell phone safety, which addresses the safest ways for you to use your cell, and etiquette plays a huge part in this. The other safety concern is that there are some health risks to those who use cellular phones. We will look at each issue in turn and hopefully give people something to ponder.
Hurricane Katrina Aftermath; Time to Launch Balloon Cell Towers
One of the most critical infrastructures for restoring order to a catastrophic disaster is that of communication. Communication is necessary for those in need to call in their needs and to alert authorities of growing problems. In the aftermath of Hurricane Katrina there is no cell phone use and those who have cell phones cannot use them because the towers are down, the power to the towers are down and by now anyone with a cell phone has dead batteries with no way to recharge them. Most cars are submerged and/or were submerged and you cannot start them or use the batteries to charge thru the cigarette lighter adapters.
Built Camera Cell in Phone
Built camera in cell phone - technology is available.
Should Your Teenage Have A Cellular Phone?
The time has come and your teenager has asked for one but you're not sure if you should supply one or not. No were not talking about a car. This is the digital age we mean the cellular phone. Perhaps no other decision has caused so much alarm and grief (aside from a credit card) then if you should give your teenage their own cellular phone. The cellular phone companies would advocate for allowing your teenage the use of a cell phone. And certainly there is merit to that suggestion. After all teenagers can use the cell phone in times of emergency such as breaking down on the side of the road or needing a ride home. Don't forget that nearly half of today's teenagers already have a cell phone. Leaving your teenager without one could affect their cool factor with their friends and other teenagers. There probably exist many other emergency situations in which your loved one would need a cell phone.
Location Sensitivity - Cell Phone GPS
This is basically a system to locate the handheld when making a call to 911. In the mid to late 1990's, many people got cell phones just for the emergency use of being able to call for help almost anywhere. The problem came up when statistics showed that almost 92% of all serious 911 calls, (where the person was just barely able to make the call), they either didn't know where they were or was unable to tell the 911 operator where they were, or they might not have been able to talk at all. This caused a big concern, 911 operators couldn't do anything but listen to the person on their cell phone as they pass away. The Location Sensitivity system still doesn't work if you are in an area that only has an analog signal. (Which is the older cellular system of the mid 1990's and earlier). Most metropolitan areas and all interstate freeways are covered by the newer digital service. It's just when you get out in the middle of no-where, you might end up with an analog signal. Most phones will display the letter "A" in the top right or left corner when using this system. Check your phone documentation, some phones don't even have this capability. Which means if you get into one of these areas, you can't make any type of call what-so-ever.
GPS Cell Phones
Motivated by the events of 9/11 2001 and problems with 911 calls from cellular phones, the FCC requires that by the end of 2005 all cell phone carriers must be able to trace the location of cell phone calls to within a range of no more than 100 meters.
Camera Cell Phones -- More Uses Than You Could Have Imagined
I was shopping in the large superstore with my five-year-old daughter, perfectly unaware that in the next few minutes I would be living through every parent's nightmare ? in an instant my child would disappear from my side. She had been looking through the little dresses right beside me and, when I called her to go try one on, she was no where to be found. I loudly called out her name, trying to keep the panic from my voice, as I frantically looked all around.
Cell Phone Security. How Vulnerable Are You?
There have been significant improvements made recently in cellular phone security. But be careful. Read on for valuable information to protect yourself.
International Calling Made Simpler And Cheaper
When people make international calls from their cell phones or land lines they often have to be aware of what time they are calling, and even where they are calling from. This is because international rates can skyrocket through the course of a day. Things are not much different with traditional phone companies. International phone rates are generally extremely high with major phone carriers, so many people are forced to limit the number of calls they make outside of the United States each month.
Small Business Phone Systems ? A Brief Explanation
How a business presents itself to its customers has to be the single most important factor in its potential success. In days gone by usually your first contact with new customers would have been through your storefront or through word of mouth, passed on by other satisfied customers. In today's modern world, telecommunication plays an ever increasing role in reaching potential new customers.
Cell Phone Dos and Donts For Teens!
There are certain things people just shouldn't do with cell phones! Like talking in the grocery store line while trying to pay for your groceries, talking in church (like nobody will notice!), talking while driving and eating and talking to the people in the car or talking in the middle of class!
Why Mobile SMS/Text Messaging?
What is Mobile SMS/ Test Messaging?
Say Goodbye to Traditional Telephone Lines
Like old, dusty books on the shelves of public libraries, regular home telephone lines have been plummeting in popularity. Some experts even foresee that traditional LAN telephone lines will eventually reach extinction- but before you start to chuckle at this forecast, it may be less farfetched than you actually think.
Buying a New Business Phone System
Buying a new business phone system is one of the most important purchases any business will ever make. The selection of a phone system can either bring a business closer to its customers and clients or, cause confusion and chaos amongst all that use or interact with it.
Choosing a Phone and Voice Mail System
Phone and voice mail systems can be pretty costly, even for companies with a low number of users. Before investing in any type of phone system or voice mail system, you need to estimate how much your company is likely to expand over the next few years. Failure to do this could cost you or your company a lot of money in upgrade and restructuring costs further down the road. It is better and cheaper to plan and allow for expansion at an early stage, than wait until it is too late.
4 Dazzling Midrange Cell Phones
Your next cell phone can be a stripped down model or contain features virtually unheard of one year ago. Chances are you will select something in between; in any case we are featuring four dazzling midrange flip top cell phones for your examination. Shop, compare, and save!
Be In When Youre Out
Busy entrepreneurs cannot be at their desk twenty four hours a day, seven days a week. Wouldn't it be great if you could have your calls routed to your mobile phone, or find out who has called you first without having to wade through a large amount of voice mail messages when you get back to the office?
Cellular Phone Plan
Choosing a cellular phone plan for all your needs.
Customize Your Cell Phone With Ringtones and Wallpaper
As an important part of your daily life, your cell phone should reflect your personality. At one time, the only way to personalize your phone was to get one in your favorite color. Today, great cellular accessories such as ringtones and wallpapers make it easy to create a phone that's as unique as you are.
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