Automotive Mobile Audio Video

As citizens of the US travel internationally for business and pleasure, the question of using their cell phone during their trip often comes up. A cell phone can be extremely useful when landline phones aren't readily available or when the traveler wants to be easily accessible to family, friends, or their employer while away. Experienced travelers know that simply packing up their US based cell phone to take along is often not enough.

Unfortunately, cell phones/cell phone services in the various countries can use different types of radio frequencies and encoding. While in the majority of European, Asian, and African nations GSM is the standard, this is not so in the US, Canada, Australia and a few other countries where other networks might also be used. Obviously, the cell phone that a traveler uses must be able to communicate through the network in the country they are visiting. In addition, the cell phone must be able to operate at the proper frequencies. Most US networks use different frequencies than those used abroad.

There are a few options for travelers in assuring that they have a compatible cell phone but probably one of the more affordable is to purchase an unlocked GSM cell phone or an international/world phone. T-Mobile and Cingular are the largest providers of GSM phones in the US but an online search will also reveal other specialty suppliers. Travelers need to be sure that the phone they purchase will operate at the frequency needed. Quad-band phones are available that operate at the four most common frequencies used in the US and abroad.

Travelers can check http://www.gsmworld.com/roaming/gsminfo/index.shtml to determine what frequencies are used in various countries around the world.

It is possible for travelers to use International Roaming if they simply have a GSM cell phone that will operate on the appropriate frequency and their US plan has international roaming available. This tends to be a rather expensive option and it is necessary to assure that service can be provided from the destination as the US provider would need to have a cross-billing agreement in place to assure roaming is possible. Again T-Mobile and Cingular would be the best bet for these types of services.

If a traveler wants to avoid some of the more highly priced International Roaming charges they can obtain an unlocked GSM phone or world phone and install a SIM card which is compatible with the service in the country they will be visiting. Service in the country of destination would then need to be purchased, but luckily it is often possible to purchase a set number of pre-paid minutes to use rather than committing to a lengthy agreement or monthly plan. As with any purchase it is wise to compare pricing of the various options and to become knowledgeable about fees and what will and will not be covered in the pre-paid minutes. On the upside for US travelers, most other countries do not charge cell phone users for incoming calls.

Once a traveler has a compatible GSM phone, SIM card, and service is arranged then they are set to be able to make and receive calls while away. Before boarding the plane however, it is also important to remember to take along an appropriate adapter to assure that the new phone can be charged when needed.

# posted by Medical Information : 1:41 AM

Sony mobile phones are quite popular because of their glossy and gorgeous models. Sony Ericsson has various sorts of models and all are hugely popular in the UK. Sony mobile phones have made their impact because of their distinctive designs and latest features. Among various Sony mobile phone models, Sony Ericsson k608i is a slender and trendy 3G Smartphone. Well, Sony k608i comes in scintillating silver colour casing and with a tactile finish. Among the popular K-series mobile phones, Sony Ericsson k608i is an attractive and superb mobile phone with latest features.

Features:

Camera phone: Sony k608i is specifically equipped with a 1.3 megapixel camera to take clear and vivid pictures. Its digital zoom very well supports the superb camera. Besides that, there is a built-in photo light, which ensures brightest and clearest picture. With the help of photo editor, you can also edit and modify the photo as per your wish. Now, you can capture, all the stunning and close moments with the help of your Sony k608i and share it with your loved ones.

Video calling: this stunning feature allows the caller to view anyone to whom he or she is talking with the help of Sony k608i. Well, this feature gives you a real life situation. So, experience the thrill of video calling facility with your Sony k608i.

FM Radio: Well, Sony Ericsson k608i is furnished with a FM radio feature. Now, you can tune the radio station of your choice and enjoy the kind of music you like to listen. Well, there is an integrated media player, which allows you to listen to your favourite music and to watch video on your very own mobile phone. Sony Ericsson k608i comes with soothing polyphonic ringtones; as per your music interest, you can also make your own ringtones with the help of MusicDJ.

Java technology: Sony Ericsson k608i is very well supported by the new Java technology. This technology allows the user to play games anytime-anywhere. So, download all the latest and popular mobile games and have a best time playing these games.

MMS: Sony Ericsson k608i has MMS features, which are comprised of text messaging, instant messaging, MMS video messaging, and email. Well, the MMS messaging comprised of photo images, video, sound and text, etc. A user can also transfer MMS to PC, Laptop, PDA, etc.

# posted by Medical Information : 1:40 AM

If you think having a cordless phone is convenient and practical, wait till you get a cordless digital phone unit. With a range of up to 300 meters from its base, you can take calls while you spruce up your garden shrubs; have it at an arm’s reach when you are outside soaking up the sun in your backyard pool; or take it with you anywhere in your house. Cordless digital phones have longer range capacities compared to their analog counterparts. They outrange normal cordless phones by five times the latter’s capacity.

Extended range coverage is not the only better feature of a cordless digital phone over other house phones. Digital technology also lessens interference, giving you high-quality speech and sound that you otherwise get from a corded model. When you go outside and expose the unit to interference coming from different kinds of transmitters and transceivers that use radio waves and frequencies, you will get the same quality of transmission as if you are inside the house.

Cordless digital phones are also easier to secure. Some of the more advanced models feature alphanumeric scrambling schemes that serve as security protocols. This solves the security problem posed by analog models. You can be sure that no free-riding neighbor can hack into your phone line with his own cordless unit and make overseas calls.

With a built-in memory device, you can store names and contact numbers in a cordless phone. The next time you want to call a friend, just key the first few letters of his name and the phone automatically presents his number from memory.

Cordless digital phones are, however, more expensive that their analog counterparts. But what you pay more in dollars, you get back in terms of security, high and better mobility and clear, interference-free conversation.

# posted by Medical Information : 1:40 AM

In the modern world, the phone system may be one of the most important purchases you make for your business. The telephone is used for easy contact with customers, clients and partners. It should also be easy for them to reach you, without being routed incorrectly, disconnected or faced with an array of automated options.

When buying a phone system, it is better to read the many phone system reviews available to find the best phone system for your business or establishment. There are three types of commercial phone systems available nowadays: key systems, Private Branch Exchange (PBX) systems and KSU-less phones. You choose the appropriate system depending on the number of extensions you need and the features you require. Most of the phone systems come equipped with various designs of office telephones. An inexpensive phone may cost less than $100, but these phones usually make accessing features difficult or provide less than optimal sound quality. Most of the average handsets sell for $200 to $300 per unit. You may have to buy phone system accessories like voicemail, music on hold and CTI applications if your phone does not already have them.

When buying a phone system, make sure to test it first. You have to decide how the phone feels in your hands, how easy it is to access extensions and voicemail, and how good the speakerphone quality is. Always check on voicemail compatibility, as your phone system has to be capable of working with a wide range of third-party voicemail systems. Once the right phone system is chosen, you must install the wires for the phone system. It is cheaper installing wires in an unfinished building, since installing wires through finished walls can add to your total cost. If your building has existing wiring, have the dealer inspect it to see if you can re-use it for your phone system. Once all these costs are covered, be ready for additional costs for training, programming, phone system repairs and, perhaps, future modifications to the phone system.

# posted by Medical Information : 1:25 AM

There are millions of mobile phones in the market with each adding superlatives to its name. In addition, daily one or more mobile phone handset is added to the cluster of communication gizmos. Motorola V3x, sony ericsson P990i and LG U880 are some of the latest mobile phone handsets being added to the mobile phone galleries world wide. From a communication device, mobile phones have transformed themselves into offices and play stations.

There is a mobile phone to suit every personality with features to quench the thirst of almost anybody. You have a phone, which is so slim that you can carry it in the back pocket of your jeans and there is a phone for which you need to burn the mid night oil to understand its features. The 3G versions have added speed and uninterruptedly versatile communication facility.

You now have phones with cameras, which will never allow you to miss a moment of delight. Share the presence of each other with video-conferencing facilities. Video tunes and ring tones have added personality to this electronic device. In addition, for all those globetrotters and high-flying executives you have Bluetooth, WAP, and Internet to be in touch with their office and carry it virtually sometimes.

Mobile network providers are also offering best of the cheap mobile phones deal to lure and entice the user. Virgin, Vodafone, Orange, 3 mobile, O2 you name nay and they have cheap mobile phones with their contract mobile phone deals. For those who want to use mobile in a limited fashion we have pay as you go option to control your budget.

If you feel you have seen the best of the mobile phones, wait and hold your breath…..who knows the best is being launched somewhere this time.

# posted by Medical Information : 1:25 AM

Buying a mobile phone from an online mobile shop may be confusing but not difficult at all. First of all, don’t buy a mobile phone plan just because it has free offers or loaded with options you probably won’t use. It’s your job to be an educated consumer and you should know what you want before you are set to buy. Undoubtedly, the best place to research and buy mobile phones is online mobile phone shop. You can easily find excellent mobile phone deals, attractive mobile phone offers, flexible plans like pay as you go mobile phones and contract mobile phones, free mobile phones, cheap mobile phones and latest mobile phones from all the manufacturers.

Everyone wants to buy the latest mobile phone at the cheapest rate. So before you begin your search, you should have the answers to the following:

1. How many minutes per month will you be using your mobile phone?

2. How much time will you spend talking long distance or traveling?

3. Will you be talking in urban areas, rural areas, or both?

Your friends and family neighbors are the best ones to advice you if they are already using mobile phones. They can tell you about the coverage, hidden fees and customer service. If you are a first time buyer and you won’t use your mobile phone often, consider prepaid plans or pay as you go mobile phones as they let you control your usage. So if you think you’ll not be using your phone that much and don’t want to sign up for expensive monthly plans, buy pay as you go mobile phones. On the other side, if your usage is high, look for the contract plans carefully before signing up any plan. If you do a lot of traveling, opt for a mobile phone plan that offers free long distance and roaming but charges a higher monthly fee may save you money in the long run.

# posted by Medical Information : 1:24 AM

The factors in the mobile telecommunications market are quite conducive for a phone user, at present. A person is now able to own a latest mobile phone, with sleek looks and a wide array of highly innovative features, quite easily. He can browse through the various offers featured in several online mobile phone shops and get to select a contract mobile phone deal that best suits his calling habit as well as budget.

The point is that as of now, phone users have diverse options before them in the use of their mobile phones. Mobile phone users in the UK, for instance, are free to select a contract mobile phone deal from leading network operators such as Virgin, Orange and Three mobile. They can also go for pay as you go options in mobile phone usage.

The availability of these two types of mobile phone deals has made the use of mobile phones quite economical and cost effective. A person can assess his needs and choose any one of the two depending on his specific requirements. Pay-as-you-go mobile phones are better for people who use their mobiles quite infrequently. A contract mobile phone deal, on the other hand, is best suited to cater to the needs of an avid user of mobile phone. With a contract mobile phone deal, a person can use one of the latest mobile phones at industry leading costs and simultaneously accrue a lot of savings in his phone bills.

Many of the contract deals are formulated on the latest and “in-demand” mobiles from Samsung, Nokia, Motorola, LG and Sony Ericsson. An interested person could acquire a contract mobile phone deal that is devised on, say, the latest third generation (3g) handset from Nokia. He can then use the same for making video calls or for accessing information from the Internet. He can enjoy all the advanced features that the handset has to offer, without in any way paying exorbitant amounts for the same. Many of these contract mobile phone deals come with affordable line rentals and cost effective tariff options, which make them all the more popular among phone users.

These mobile phone deals are featured in several online mobile phone retailing sites. A person can easily access these online shops and retailing sites and select a mobile phone deal that maximizes his utility subject to his budgetary as well as other behavioral constraints.

# posted by Medical Information : 1:24 AM

Local phone service refers to the services provided by phone companies that allow a customer to make calls within the same city or region, which is defined as the local calling area. What constitutes an individual local calling area is decided by the phone service provider.

Until a few years ago it was not possible to choose your local service telephone provider. However, the Telecommunications Act of 1996 opened up the telephone industry to wider competition and now it is possible for most people to choose a service provider that offers the best rates and service. Thanks to this act, consumers benefit from increased competition and now have better deals to choose from when it comes to phone services.

Long distance services were first offered in 1892 when AT&T built a long distance telephone network that was interconnected between New York and Chicago. Due to the limitations of the technology available at that time, this network could not be extended further. After the invention of loading coils, the network was expanded to Denver, in 1911. Following the development of audio technology in 1914, it was possible to make telephone signals reach each other from one coast to another. However, the first real-time long distance call was not possible until 1951, with the introduction of the direct distance-dialling feature of AT&T. This is also the first time an area code was used, which led to today's 10-digit phone numbers.

For a long time, long-distance carriers specialized only in providing long-distance services. However, with technological advancement most of the service providers could provide both local and long distance phone services to their customers. Joining the two services led to streamlined billing and better customer support. However, the current long distance market is fiercely competitive and using a separate service provider for long distance services can ultimately be cheaper because the providers are competing for business and tend to offer low-cost plans.

The main long distance service providers in the U.S. are Sprint, AT&T and MCI Worldcom. With the development and proliferation of mobile phone technology, mobile telephone service providers have been able to compete with the long distance service providers, providing customers low rates for local and long distance calls. This is one of the main reasons for the increasing popularity of the cell phones in the telecom market.

# posted by Medical Information : 1:23 AM

Cell phones are an integrated part of the lives of most Americans. They are used for both personal and business purposes. Even more importantly however, cell phones play a role in safety based on their portability. In many situations, cell phones are the only immediate access to emergency services such as 911. For this reason, the accessibility of cell phones is critical for all citizens, including those with hearing impairment. There are over 6 million individuals in the United States who wear hearing aids and thousands of individuals with cochlear implants. Newer digital phones can create interference in the form of unwanted noise such as a high pitch whistling, buzzing, or static for those with hearing aids and cochlear implants.

In 2003, the FCC set forth regulations for the telecommunications industry in an attempt to assure access to the products and services offered for individuals with hearing impairment. The aim of the regulations is to assure that those with hearing impairment are able to learn about and operate products and services effectively. The regulations are being phased in over a period of a few years and will reach an important milestone on September 26, 2006. The regulations require manufacturers to provide cell phones to service providers that reduce radio frequency interference by meeting certain ANSI standards (American National Standards Institute).

By the September deadline, Tier 1 cellular service providers such as Cingular, Sprint-Nextel, T-Mobile, and Verizon Wireless must provide at least 5 cell phones, or 25% of their models, which meet ANSI U3T or M3T ratings. This would assure the availability of cell phones that emit lower radio frequency and could provide telecoil coupling capability; both of which would reduce or eliminate unwanted noise. In addition, these cell phone models will need to be present in retail stores so that they can be tested by consumers. By February 18, 2008 fifty percent of all phones are expected to meet the required ANSI standards for hearing aid compatibility.

# posted by Medical Information : 2:17 AM

Once a phone system is bought, there is always the possibility of some problems arising with the phone system, thus calling for phone system repairs. It is always better to have all phone system repairs done by someone who is well versed with the mechanics of the phone system.

There are many phone system repair shops around, which you can find either by surfing through the Internet or by going through the yellow pages. Most of these firms also offer repairs to be done onsite, with a six-month warranty on all repairs. Once you call these firms they send over service technicians as early as possible. Once the service professional arrives, he will need to know the location of the phone system and be able to access it for repairs. He will also need additional information, like the ID of the bad circuits or if anyone has recently moved, or been added or changed, in your telephone equipment. He will also ask for a timetable of the symptoms that led to the failure of the phone system. Usually, the person assigned to administer the PBX will be able to determine what the cause of the failure is by examining the logs and other indicators. Through this, both the cause and scope of the failure will be determined.

The next thing the service technician will need to know for the phone system repairs is whether the problem exists in the outside wiring, or the inside wiring. If the problem is with the outside wiring, then the phone company owning the circuit has to be called and informed of the faulty circuit ID of the phone system. It is for this reason that the circuit ID has to be written down and easily accessible for phone system repairs, as without this, the phone company finds it difficult to identify the circuit. And if the problem lies in the inside wiring of the phone system, then it is up to the service technician to rectify it.

# posted by Medical Information : 2:17 AM

Over the past few years, several state have passed new laws that require anyone using a cell phone while driving must use a phone headset. There are three types of cell phone headset kits for cars - permanent car kits, portable car kits and headsets. Many feel the headset is the most practical solution for driving, because headphones work well in the office and at home as well.

Whether driving or not, cellular phone headsets are an absolute necessity. There are different types of cell phone headsets available including retractable headsets that are flexible and can be adjusted during conversations. The ear buds headset has a microphone that sits on the earpiece or wire, and a headset with a boom microphone.

A popular brand on the market is Motorola. If offers two Bluetooth headsets - the HS810 and HS820. They are Bluetooth enabled and can communicate with Bluetooth 1.1 compliant devices including computers. They weight about 20 grams and the talk range is somewhere around 6 hours. The HS810 talk range is 5 hours. They have standby time for 100 hours, and the HS820 can communicate with your phone 33 feet away. The HS820 also has conference call and voice dialing features. It sells for $79 and the HS810 sells for $99.

Jabra is another top seller providing hands-free communication. Its new headset "JabraFreeSpeak FS258" weighs only 23 grams and is the lightest behind-the-ear device produced by the company. T-Mobile has the Samsung T609 that has Bluetooth that allows both wireless headset connection and contact synchronization. It sells for around $150 after rebate.

# posted by Medical Information : 2:17 AM

Phone headsets are electronic devices that plug into a phone on one end and hook around the ear on the other end, for a hands-free telephone talking experience. Phone headsets are a necessity for people who talk a lot on the phone. This is especially true for top CEOs of companies who use the phone as a marketing tool to expand their business.

Most people before the over-the-head design that snaps into position and can be easily adjusted. The earpiece should fit in or over the ear comfortably. Some are equipped with a disconnect feature so that you can step away from your desk to get a file and then plug back in without losing the call.

Phone headsets are very convenient and are easy to use. Ergonomically, they are great for your neck and back because they keep your neck free and your back aligned in a way to lend support you need. Your hands aren't tied up with a phone, so you are free to do other things. The sound is usually crisp and clear, and some come equipped with a noise-canceling microphone that filters out all other sounds around you.

Phone headsets can be wireless or corded and can have monaural or binaural earpieces. Other factors include the type of phone connection used, as well as computer compatibility, noise canceling ability, and speaker power and plug adapters. There are several phone headset manufacturers including Sony, Plantronics and Jabra. For more information about the many different phone headsets available and prices the Internet is a valuable resource.

# posted by Medical Information : 1:49 AM

Prepaid wireless service has gained popularity because of the advantages it offers consumers. It has become an attractive alternative to wireless plans that often come with long-term contracts.

Aside from being bereft of contracts, prepaid services have also helped people budget the costs of their phone bills. Through these, parents can limit and control phone usage of their children. Likewise, prepaid services have found their niche among people who plan to use mobile phones solely for emergency situations.

However, there are still some disadvantages that go with prepaid wireless services. First, they are still more expensive compared to postpaid services. Second, phones may prove to be more expensive as carriers do not offer as many services as they do with postpaid plans.

There are three available types of prepaid wireless services on the market today. First is the traditional prepaid service wherein the user will buy a phone and air cards. These cards can be refilled as needed with the use of credit cards. There are also hybrid prepaid services. Unlike traditional prepaid services, recurring charges are added in hybrid prepaid services. There may be additional services offered with hybrid prepaid services, but the advantage is that they still do not come with a long-term contract. Lastly, there are unlimited talk time prepaid cards. These allow the users to make unlimited calls within a small local area. This may prove to be a good alternative for landline users. Note, however, that roaming is not possible with such prepaid cards.

Before buying prepaid services, a user should first consider a number of things. If a person sees that he or she will frequently used his or her phone to call people, it would be better to opt for a postpaid plan that offers lower call charges. Likewise, if the owner is a traveling person, it would also be better to go with a postpaid plan. Prepaid plans are usually not capable of roaming service, and even if they are, they might be way too expensive.

# posted by Medical Information : 1:49 AM

Price: $49.99 the Samsung t809 Phone (T-Mobile) has to be looked at as one of the best choices for a Samsung cheap mobile phone or (cell phone ).

Product Description

This flagship quad-band phone from Samsung cheap mobile phone or (cell phone ) combines a super-slim slider design with the latest technologies, making it a must-have tool for those who demand the best. Goodies include Bluetooth, support for EDGE high-speed data, a swiveling megapixel camera, a music player, and a microSD memory card slot. The Samsung cheap mobile or (cell phone ) SGH-t809 is the perfect way to take advantage of all that T-Mobile service has to offer.

Design

The Samsung cheap mobile phone or (cell phone ) t809's sliding design hides the phone's number pad under the display until you need to make a call. The massive, 240 x 320 display supports up to 262,000 colors -- plenty of resolution and color depth for your videos and photos. A five-way center control button is positioned below the display, as are shortcut and selection keys. The phone's 1.3 megapixel camera is housed on the top of the phone and it swivels to face in or out. USB data and charging ports are located on the phone's bottom edge. There's also a connector for a stereo 2.5 mm headset on the left side, while the microSD slot resides on the right.

Calling Features

With 70 MB of internal memory, the Samsung cheap mobile phone or (cell phone ) t809 is designed to hold all the contacts, phone numbers and addresses you can throw at it. A call list remembers your most recent missed, received and dialed calls, and in addition to a vibrating alert, the Samsung cheap mobile or (cell phone ) t809 supports polyphonic ringtones and MP3-based music ringtones. You can also download additional MP3 music ringtones from T-Mobile's t-zones service. A speakerphone lets you talk hands-free while you're doing other things, and picture caller ID lets you assign a photo to specific callers. Similarly, a ringer ID lets you assign ringtones to callers. Like all T-Mobile phones, the Samsung cheap mobile phone or (cell phone ) t809 also supports voicemail, caller ID, conference calling, call forwarding, call waiting, call hold, built-in paging, and access to T-Mobile's 411 service. Lastly, the phone's Bluetooth connectivity means that your favorite Bluetooth headset is fully compatible.

Messaging, Internet, and Tools

The Samsung cheap mobile phone or (cell phone ) t809 has all the bases covered when it comes to messaging. Support is built in for sending and receiving text, video, graphics and sound via messages. When used in combination with the phone's built-in camera, MMS opens up a whole new world of messaging fun. Messaging clients for AOL, Yahoo!, and ICQ are included.

Getting on the Internet is easy with Samsung cheap mobile phone or (cell phone ) t809, too. It supports the GPRS protocol, as well as the new, high speed EDGE data protocol. When used with a T-Mobile data plan and the phone's USB or Bluetooth data capability, the phone can be used as a wireless modem for laptops and PDAs. There's also a built-in browser for t-zones downloads and mobile Web browsing. T-Mobile's t-zones service lets you receive and send emails, read news headlines, get weather updates, download games and ringtones, and more. T9 text entry, which is a technology that makes it easier for people to enter words and text on handsets, is built into the unit-- a plus for mobile text messaging users.

A number of handy productivity tools are bundled with the Samsung cheap mobile phone or (cell phone ) t809 including a voice memo recorder, an alarm clock, a calculator with currency converter, a calendar, and a to-do list.

Imaging and Entertainment

The Samsung cheap mobile phone or (cell phone ) built-in 1.3 megapixel camera captures stills and video to the phone's internal memory, or to an optional microSD memory card. The camera captures video at 352 x 288 resolution, and it features white balance and brightness controls. Meanwhile, the phone's powerful still camera sports a self-timer, a multi-shot mode, a night mode, brightness and white balance controls, ISO controls, and spot metering.

Into music? You're in luck with the Samsung cheap mobile phone or (cell phone ) t809. Store your favorite MP3-based music on the t809 and listen whenever the feeling strikes you on the built-in stereo speakers. Simply upload the songs from your PC via the phone's USB interface (the phone supports USB mass storage mode), then organize and play your songs with the Samsung cheap mobile or (cell phone )t809's music management software. And when you want to jam out in private you can hook up a stereo headset. Lastly, if you want to dress up the t809, picture effects, custom screensavers, backgrounds, and themes can be set to fit your personality.

Vital Statistics

The Samsung cheap mobile phone or (cell phone ) SGH-t809 weighs 3.35 ounces and measures 3.9 x 2.0 x 0.58 inches. Its lithium-ion battery is rated at up to 4.3 hours of digital talk time, and up to 130 hours of digital standby time. It runs on the GSM/GPRS/EDGE 850/900/1800/1900 frequencies. The phone comes with a one year limited warranty.

# posted by Medical Information : 1:48 AM

Satellite phones are also known as satphones. This is a type of mobile phone that uses orbiting communication satellites to communicate with other people. Depending on the type of the phone and its purpose, a satellite phone may give access to any phone worldwide or be limited to one particular region. These phones are great alternatives where phone lines do not run or where a telecommunications company is unable to set up cellular towers.

Geostationary Services

Satellite phones gain access from geostationary orbit satellites that is situated directly above the equator. This service follows the inverse square law which states that the larger the antenna the better the reception. In keeping with this rule, the phones tend to be physically large.

Low Earth Orbit Phones

Low earth telephones or LEO for short uses satellite technology. LEO technology has worldwide coverage without any problems. Satellites that provide the signal for these phones tend to fly low at high speed. The satellites orbit the globe in a short time guaranteeing worldwide coverage.

Using these satellites can be expensive to maintain so researches are being funded to try and use blimps as an alternative solution.

Uses

Because of its wide coverage, the primary use of satellite phones is for offshore military missions. When in missions, depending on the terrain such as the jungle or desserts, usually the soldiers are deprived from the use of traditional phones, and even if they did, there is always a threat to security breach or giving away their location. Through satellite phones, the soldiers are given assurance that they have access to their fellow soldiers and the headquarters.

Rescue missions or medical missions which usually take place in remote areas like up in the mountain or rural undeveloped areas where infrastructures and telecommunication services are limited is where satellite phones come in handy. Especially during emergency events a satellite phones provide assurance of connection to the necessary backup personnel and service providers.

# posted by Medical Information : 1:48 AM

Selecting the best calling cards for use in India can be intimidating when you consider all the choices available. Many calling card companies claim that they offer the best rate, but they may have hidden charges that are extremely so high. So before you buy a calling card, you should consider several factors such as connection, maintenance, and service fees. You should first ask yourself some questions before you select the calling cards that best suit your needs.

Are you going to use the calling cards frequently? If you will use them regularly, like everyday or every other day until they are used up, then you can choose a card with a low rate and a weekly maintenance fee. Even before you pay any fees, you have already used up the calling card.

Are you going to stay long on the phone for each call? If you will make long calls, let's say over 30 minutes per call, but will be making them infrequently like once a month, then you can go for a calling card that has a connection fee in conjunction with a low rate per minute. But you cannot buy a calling card with a maintenance fee with this frequency of usage because you will be charged a fee for not using the card very often. The maintenance fee will eat away your calling card balance, and without you noticing it, you don't have any time left on your calling card.

Are you going to use the calling card for a long duration or for a short while? If you plan on having the calling card for just a while and you will not make long phone calls on it, you better not buy a calling card with a maintenance fee or connection fee. But if you will use it for a longer period, you have to be aware of its expiry date. Make sure that you use the entire card before the expiry date because any money left on it after it expires will be lost.

These questions will guide you when selecting the best calling cards for use in India. See to it that the calling card that you choose will give you the cheapest total calling time for all calls that you make and not just a low cost per minute.

# posted by Medical Information : 1:47 AM