October 14, 2008
The common perception is that VoIP costs hardly anything because everything costs less on the internet. There’s high competition, and much lower costs etc. However you need to take into account the history of the telecommunication companies and their relationship with computer networks, and the way data physically travels around the net. An knowledge of this is needed to fully comprehend the mystery behind the VoIP vs. POTS pricing riddle.
Long before computer networks became important telcos were using digital communication. In the beginning the original digital voice circuit was used in Chicago in 1962 however ARPANET, the predecessor to today’s Internet, wasn’t up and running until 1969. The telecommunication companies used these digital circuits to make lots of voice connections over great distances something that analogue circuits were unable to do and they continue to use them for this purpose today.
Voice communication have several unique characteristics. For one thing, it’s inherently real-time. You’d get annoyed if phone calls consisted of long periods of silence followed by a burst of fast conversation to catch up with the conversation on the other end. To keep this from happening digital voice circuits provide guaranteed Quality of Service (QoS). Once a connection is provisioned, you will always get exactly the amount of bandwidth you need. It’s not just bandwidth though; latency is also carefully controlled by using small, fixed sized data packets. Essentially the infrastructure was specially designed to facilitate voice communication.
When computer networks began popping up in the telecom companies wanted in. They already had a lot of infrastructure there so they started looking at how they could send data over their existing phone lines. They came up with a number of technologies with varying levels of success. But there was (and still is) a problem: data networks are fundamentally different than voice networks.
Data is sent in packets, which can arrive randomly sometime after they’re requested, without causing any issues. Internet Protocol (IP) was created to provide best effort delivery. Telecommunication companies had an expensive network in place, so there was a lot of incentive to use it. After some trial and error Asynchronous Transfer Mode (ATM) was created as a compromise technology that could carry both voice and data. However it’s much less efficient than a pure data network. The costs for data transfers on ATM is more than 10link, compared to about one percent for an Ethernet running full-throttle.
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July 31, 2008
The general public have a poor understanding of free line rental products due to them being a pretty recent trend. Free line rental products are the least understood of all of the products around today.
Effectively a free line rental mobile contract does not cost a cent to operate. This is true only so long as the consumer properly makes their request for for cashback. Often this is not nearly as easy as it first seems due to the fact that mobile retailers add a few catches in the detail of free line rental products in order to reduce the numbers of successful consumers.
A free line rental package is a kind of cashback by redemption package. With this type of phone contract you must remember to pay the mobile phone costs exactly the same as you would with any other contract for the first months before you are able to get your 100% cash refund. At a later date in the mobile contract you have the opportunity to to claim the cost of the mobile back from the shop who first gave you the mobile.
Despite the potential difficulties of free line rental bargains they are absolutely genuine and it is still possible for potential buyers to obtain 100% cost free mobile for full duration of a 12 month contract.
The largest problem of free line rental offers is that if ever the company fold you will not be able to redeem your money. Free line rental is always going to be a compromise, as they are only obtainable on older types of mobile phone.
The most competitive method of finding a free line rental offer is on the internet. As free line rental packages are something of a specialised package it is advisable to find a good a comparison site to see the cheapest packages at the time.
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December 17, 2007
Nokia, as everybody knows, is now 1 of the planet’s most large makers of cell phones and this is compared with other leading competitors for instance, Samsung & Motorola (as well as others). Nokia assemble sets for each and every dominant market sector and back in ‘07 Nokia was voted the most valuable global brand. Their goods fall into four various sectors - mobile phones, multimedia, networks & enterprise solutions.
The mobile device revolution headed by Nokia would seem to be inexorable. The heavyset bricks found in the nineties for example, the Nokia 2110 that was almost 236 grams have nowdays been swapped with light-weight, and slim phones for example, the Nokia 6282 that comes in at a mere 115 grams or what about the Nokia 7380 that weighs primarily 80 g. All the phones have the very latest in communications jiggery pokery coupled with a solid fashion sense.
Deciding on a telephone was in the past a simple business still, when you think about the products possible to each of us today, it becomes somewhat harder. Consumers can buy their mobile devices with the thought of various extras, - might it be a statement of fashion an object which makes people look spiffing - or could it be only for the advantages that the telephones presently offer, for example, e-mail & WAP, etc.
More technologies are also consolidating in Nokia phones to allow the customer the possibility to communicate with more than simply speech. Nokia telephones which include cameras are also becoming commonplace as is the facility to make video and transmit them to friends and buddies through multimedia messaging. You should additionally see full color video on every one of their handsets and in excess of 1/2 are available with the opportunity to show WAP info (URLs designed just for the smaller screens on your mobile devices). Also obtainable is telephones which have radios & MP3 facilities only for listening to your favourite music. The cost of their phones range from nil up to a few hundred pounds, it mostly depends about what one wish for.
Nokia, as was mentioned, continues to be the the globe’s top builder of cell phones, even though some think that Nokia’s top rank might be threatened especially by Sony Erickson. Even so, Nokia are backed by the advantage of decades of experience in mobile phone fabrication & has incredible loyalty from its mainstream consumers along with with their reputation just for reliability & user friendliness. Find out about the latest mobile phones.
As new technologies become even more vital in today’s cell phones, the space between Nokia and all of its competitors will become extra obvious.
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November 11, 2007
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November 7, 2007
The Nokia company is a universal communications corporation, concentrated on the vital booming areas of wireless and wired telecommunications. Nokia is, at present, the planet’s largest constructor of mobile telephones, with a universal hand set market share of approximately 38%. Nokia provides cellular telephones for each big market piece and protocol. The company moreover provides telecommunications network gadgets for applications, for instance, mobile and fixedline voice telephony, ISDN, broadband access, VO IP and wireless LAN.
Finnish people have ranked Nokia, a number of times, numero uno Finnish brand and employer. Nokia is the 5 th most valuable brand in the world in BusinessWeek’s Best Global Brands compilation of the twenty favourite firms world wide in Fortune’s World’s Most Admired Companies.
Nokia’s Mobile Phones sector equips folk with mobile voice and data products across a big selection of mobile devices. The sector attempts to target principally large volume type sales of phones and devices, with the general public being the most essential customer segment.
Nokia reckons that brand, design, ease of use and price are main-stream mobile telephones’ most decisive considerations for customers. Nokia’s product catalog includes mobile phones, camera telephones with special features, e.g., megapixel cameras and MP3 players which engage the mass market.
During the first quarter of ‘07 it sold more than 15000000 MP3 capable mobile phones, which means it is not only the world’s sizable manufacturer of mobiles and digi cameras (as the lion’s share of Nokia’s mobile phones feature digital cameras, it is also believed that it has lately overtaken Kodak in camera assemblage, making it the biggest in the world), it is nowadays also the sizable manufacturer of digital audio. It aims to sell eighty million music enabled phones by the end of 2007, overtaking sales of things such as the iPod from Apple.
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October 27, 2007
Introduction
Lawful Intercept (LI) is a requirement placed upon service providers to provide legally sanctioned official access to private communications. In the existing Public Telephone Network, Lawful Intercept is performed by applying a physical ‘tap’ on the telephone line of the target in response to a warrant from a Law Enforcement Agency (LEA). However, Voice over IP (VoIP) has enabled the mobility of the end-user, so it is no longer possible to guarantee the interception of calls based on tapping a physical line.
Whilst the detailed requirements for LI may differ from one jurisdiction to another, the general requirements are the same. The LI system must provide transparent interception of specified traffic only and the subject must not be aware of the interception. The service provided to other users must not be affected during interception.
Architecture Overview
Although the detail of LI may vary from country to country we can describe the general requirements and also explain much of the common terminology used. The primary purpose of the service provider network is to enable private communications between individuals; any LI functionality built into the network must not affect the normal service to those individuals. The interfaces between the PTN and the Law Enforcement Monitoring Facility (LEMF) are standardised within a particular territory.
LI deals with two ‘products’, these are:
- Contents of Communications (CC): exactly what it sounds like, the voice, video or message contents.
- Intercept Related Information (IRI): information about the source and destination of the call etc.
European requirements are often based on the ETSI standards. In North America CALEA (Communications Assistance for Law Enforcement Act) requires operators to provide LI capabilities. The network architecture and handover specifications are based on the PacketCable™ surveillance model, however the architectures are very similar.
Basic Elements of LI in a Public Telecom Network
There are three primary elements required within the public network to achieve Lawful Intercept, these are:
- An Internal Intercept Function (IIF) located in the network nodes.
- A Mediation Function (MF) between the PTN and LEMF.
- An Administration Function (ADMF) to manage orders for interception in the PTN.
Internal Intercept Function (IIF)
These functions are located within the network nodes and are responsible for generating the Intercept Related Information (IRI) and Contents of Communications (CC).
Mediation Function (MF)
This function clearly delineates the PTN from the LEMF. It communicates with the IIFs using Internal Network Interfaces (INIs) which can be proprietary. The MF communicates to one or more LEMFs through locally standardized interfaces: the Handover Interfaces (HI2 and HI3).
Administration Function (ADMF)
This function handles the serving of interception orders and communicates with the IIFs and MF though an Internal Network Interface.
Implementing LI within an VoIP Network
One of the primary problems faced when managing VoIP calls is the separation of the signalling and media streams. It is quite possible that the two streams may take completely different paths through the network. In addition, even when they do pass through the same device, it may not be aware of the relationship between the streams. Some devices within the network are however specifically designed to understand and manage the separate signalling and media streams – session border controllers. Typically located at the borders of the network, they receive Intercept Related Information from the signalling stream and Contents of Communication directly from the media stream.
Conclusion
It has become clear that VoIP services will be expected to provide Lawful Intercept capabilities to the same level experienced in the PSTN. The FCC in North America has mandated that both emergency calls and Lawful Intercept must be available. Whilst not all countries mandate this capability, any network operator building a publicly available voice or multimedia over IP service today will need to plan a network which is flexible enough to implement these regulatory services in the future.
Terminology
ADMF Administration Function
CALEA Communications Assistance for Law Enforcement Act
CC Contents of Communication
ETSI European Telecommunications Standards Institute
HI Handover Interface
IIF Internal Intercept Function
INI Internal Networks Interface
IRI Intercept Related Information
LEA Law Enforcement Agency
LEMF Law Enforcement Monitoring Facility
LI Lawful Interception
MF Mediation Function
PSTN Public Switched Telephone Network
PTN Public Telecom Network
VoIP Voice over IP
References
ETSI TS 101 332 v1.1.1 (2001-08) Telecommunications security; Lawful Interception (LI) Requirements of Law Enforcement Agencies
ETSI TR 101 943 V1.1.1 (2001-07) Telecommunications security; Lawful Interception (LI); Concepts of Interception in a Generic Network Architecture
ETSI TS 101 671 V2.8.1 (2003-11) Telecommunications security; Lawful Interception (LI); Handover interface for the lawful interception of telecommunications traffic
PKT-SP-ESP1.5-I01-050128; PacketCable™ 1.5 Specifications; Electronic Surveillance
Further information on Lawful Intercept can be found in the White Papers directory at Newport Networks
Dave Gladwin works for Newport Networks and has worked in the telecoms sector for 25 years and VoIP for the last 10 years.
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October 19, 2007
VOIP is an acronym for Voice Over Internet Protocol, and it works by using your broadband internet connection to route your call more efficiently and cost effectively than conventional calling. The most common VOIP method works like this. Your standard telephone is connected to VOIP gateway, usually located somewhere in your house like a basement or utility closet. This gateway takes your voice and converts it from an analog signal to a digital signal. Once it exists in digital format it is broken down into smaller more manageable units known as “packets” and is transmitted over the internet the same way data is transmitted to and from your computer. These “packets” contain information about their final destination and have instructions to enable them to be put back together in the proper order. Once the packets reach the closest location to their desired destination they go back through another VOIP gateway which translates the signal back into an analog format. The gateway then passes the signal over to a PTSN (Public Telephone Switch Network) and your call is routed to the number that you dialed.
As people become more familiar and comfortable with VOIP calling newer and more advanced methods of communication will occur. In the very early stages of adoption are IP Based telephones. Instead of using standard telephone equipment with an RJ45 telephone connection to a VOIP Gateway these phone interfaces directly with the internet through a standard network connection. This enable you to use your phone at home unplug it when you leave and then plug it in at your office and your calls are automatically routed to the phone wherever it’s plugged in. As WIFI networking becomes more prevalent expect to see wifi compatible cellular phones emerge to make calling even more portable.
While VOIP is still in the early stages of adoption there are still some hurdles that need to be overcome. The most important ones include emergency calling, and the need for uninterruptible power sources. However as VOIP and other IP based telephony continues to grow and advance, VOIP service providers will find ways to solve these problems.
© Copyright VOIPTelephoneSystem.org, All Rights Reserved.
Jessica Liu is a staff writer at http://www.voiptelephonesystem.org a news and information website about VOIP and VOIP related technologies.
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October 15, 2007
VoIP service providers are now offering videophone at the lowest price we’ve seen on the VoIP service market. The tremendous drop in prices will see more individuals and SMB’s investing in this affordable futuristic way of communicating.
VoIP services are fast becoming the way to communicate worldwide and with the recent drop in videophone and service plan prices many individuals will be able to get a taste of the future at cost-effective prices. Today’s videophone offers more clarity than ever before and at a lower cost.
The videophone has become popular for conferencing with geographically challenged offices in real-time and for lawyer firms in taking depositions. I expect to see more videophones in offices in the next few months and individuals adding videophones as a practical conversational communication option to there current telcom arsenal.
Watch for the VoIP service field to grow in great leaps and bounds in the next year along with more important features being established such as emergency 911 and 411 services. The last few weeks have seen the FCC take a closer look at the VoIP industry, along with other consumer groups which is a plus for consumers. Consumers should see the lower level providers fade away and the tier 1 VoIP providers battle it out for the best technology and lowest price plans. Some providers have already added a Regulatory Recovery Fee to cover the cost of the new obligations being imposed on the VoIP providers, but, don’t expect prices to go up much. VoIP services are still the most economical way of communicating today.
So, go out and enjoy the VoIP services and try out the videophones at affordable prices.
Scott Sowle
If you would like more information on VoIP services and videophones please visit: http://altabroadband.bravehost.com
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September 20, 2007
With VoIP technology entering the mainstream, it brings the possibilities or huge profits for the companies that provide the service. The current promise of cost savings is driving more and more residential and business users to investigate this technology. But the local telephone companies are not going to give up customers without a fight.
There is a current mandate by the US federal government that all VoIP providers offer E911 service. The initial blocking of this information was with the public switched telephone network maintained by the major telephone companies.
The next stumbling block is ‘naked DSL’ or DSL access without local phone service. This service is rare, but without it a residence would not be able to use VoIP as their primary phone service mechanism. You see, DSL is running over your existing phone line provided by your local telephone company. Drop your local phone service and you’ll probably drop your broadband DSL access as well. (Cable broadband access is a viable solution here and the increased cost in cable access should be offset by the reduction on your monthly phone bill)
These are just two fronts in the battle over VoIP. Should companies be compensated for the infrastructures they build? Should E911 service be ‘free’ and offered as a public service? What about the existing phone service run into our homes? Who pays for those lines to be laid and hooked into the public switched telephone network?
There really are no easy answers to the questions above. The phone companies are not about to give up customers without a fight. They have years and billions of dollars spent in building one of the most reliable communications networks ‘currently’ known to us.
Is VoIP the next step in the evolving communications industry? How will this play out with phone companies offering internet and TV services and cable providers offering phone and internet service? The line is being blurred and yet the technology pushes forward.
I don’t have the answers, only questions. I know how I’d like to see it all play out, but alas, there is no Nirvana and no, it would seem we all cannot get along. Not when there’s literally billions of dollars at stake. There will be winners and losers as this war rages on, but it is my hope that we, the end users, will, in the end, be better for it. After all, we’ve been down this path many times before and it’s turned out ok.
Remember the advent of the PC and where we’ve gone since then? Remember the first bulky cellular phones vs. what’s available today? Yes, TV’s, radios, computers, phones the list goes on. Technology advances will continue to push us into new directions. I’m sure that in the end, VoIP will be as commonplace as the home computer.
We can leverage this technology today in a cost effective manner. Like any technology how you implement VoIP will make the difference. Whether you’re a residential or business user, there can be an immediate benefit. Check with your communications broker to find out if your existing phone needs can be met cost effectively with VoIP.
http://www.fullservice-broadband-provider.com
The Full service broadband provider is a service offered by Try Right Technology, Inc. This service provides unbiased informative information on broadband technology as well as local/long distance and cellular service. Copyright 2005
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September 8, 2007
A common thinking among “Marketing people ” is that for every product that enters the market there must be a path, a target, a need ( real or created) that decides how the product must enter the consumer’s life, which part of the population is more likely to go for it, which niche it is going to fill and, most important “…certain things being stated, something other than what is stated follows of necessity from their being so.” and that is the final issue: the price.
Depending on those anavoidable patterns a product is more or less ready for a certain market.
High technologically devices, the ones that offer perfect quality and cost a fortune will target the elitarian market, where the price has not big importance (on the contrary, if the price would be lower than what certain people can afford, the product wouldn’t reach them) since it means luxury.
When a product ceases to be luxury and begins to be a need, then the mass market is ready. The product can enter 60% of consumers’ lives, reach easily a good upgrade in the percentage and become ” The New Product of the year 200….”.
Let’s consider the VoIP market.
Prior to recent theoretical work on social needs, the usual purpose of a product invoked individual (social) behaviors. We now know that these assumptions are not completely wrong.
Wrong would be NON considering them.
In systems where many people are free to choose between many options, a small subset of the whole offer will get a disproportionate amount of traffic (or attention, or income), even if no one of the system actively work towards such an outcome. This has nothing to do with moral weakness, selling out, or any other psychological explanation. The very act of choosing, spread widely enough and freely enough, creates a power law distribution.
Now, thanks to a series of breakthroughs in network theory by researchers we know that power law distributions tend to arise in social systems where many people express their preferences among many options. We also know that as the number of options rise, the curve becomes more extreme. This is a counter-intuitive finding - most of us would expect a rising number of choices to flatten the curve, but in fact, increasing the size of the system increases the gap between the #1 spot and the median spot.
In other words: give to the people the choice among desktop phones and mobile phones and the majority will choose what they think more convenient, in spite of the cost of the service.
In a way the cost of the service is the only left advantage in favour of the fixed telephony.
If the price was the same the desktop phones would disappear from the life of the average consumer (mass market consumer).
To see how freedom of choice could create such unequal distributions, consider a hypothetical population of a thousand people, each picking their favorite way of telecommunication. One way to model such a system is simply to assume that each person has an equal chance of liking each kind of telephony. This distribution would be basically flat - most kind of telephony will have the same number of people listing it as a favorite. A few will be more popular than average and a few less, of course, but that will be statistical noise. The bulk of the telephony will be of average popularity, and the highs and lows will not be too far different from this average. In this model, neither the quality of the voice, the availability, the design of the device nor other people’s choices have any effect; there are no shared tastes, no preferred genres, no effects from marketing or recommendations from friends.
This is the mass market of VoIP as dreamed and forecasted by most hardware producers.
People would choose VoIP in spite of the fact that the systems are not intercommunicating, the available phones are just desktop phones, most of the population doesn’t have a “Flat rate DSL” and some do not even have a decent connection, (just one ” UP to…) and just because VoIP means cutting cost.
They have a few wrong assumptions:
- Most of the people want to save calling internationally
- Most of the people will use a cheap Flat rate connection
- Most of the people know how to handle a computer or a network, and so solve all the eventual problems that could arise.
But they do not consider that:
- Most people call locally and just a few once in a while internationally.
- Most of the people do not have a cheap flat rate Internet
- Most of the people are not IT experts.
Besides people’s choices do affect one another. If we assume that any kind of telephony chosen by one user is more likely, by even a fractional amount, to be chosen by another user, the system changes dramatically.
If Robert (our average mass market consumer) likes to have a phone in his pocket, available mostly anywhere, it is very likely that Mary would like the same.
Is VoIp ready for the “Mass Market”?
The answer could be No and Yes.
What would VoIP offer more than the existing several choices?
- Price. Telephone calls would be completely free of charge among two IP phones ( and that believe me is a GREEEEAT THING when you try it)
- The never enough considered satisfaction to be able to ref..ck who f..cked us for many years…
What would VoIP telephony need to be #1 spot in the curve?
- A reliable PORTABLE Phone that doesn’t need millions of Hot Spot’s to work.
- A reliable, cheap flat rate internet connection anywhere for everybody.
If ONE could put these patterns together, THEN VoIP would really have the chance to be #1.
See my website: http://www.worldonip.com or contact me patrizia@worldonip.com
About The Author
Patrizia is an ebooks publisher. See also http://www.easymediabroadcast.com
patrizia@worldonip.com
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