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Welcome
Ed – Jonathan Burnside

Hello everybody and welcome to another informative issue of LSM. It’s good to be back after the summer break. We are going to bring you some excellent articles from a wide range of IT related subjects…

In this issue our first article examines what happen to our old PC’s. This is a subject that is becoming evermore prevalent due to the inherently fast paced turnover of computer technology. It seems that as soon as a piece of computer equipment has been brought out then only a month or two (sometimes less) down the line it is surpassed by the next generation of equipment.

Our second article answers the question ‘What is IP Telephony?’, lots of people have heard of it but only a select few actually know, with this article we hope to bridge the gap!

 

Computers - The Afterlife
by Yuri Tang ©2004

Have you ever wondered what happens to your old PC when it gets the ‘elbow’ from a newer, leaner, meaner, faster machine?

The average lifespan of a computer is between three to five years. The way technology is moving forward today with sometimes incredible speed, this lifespan could be less. In reality, these computers could function well beyond this given time, but due to advanced applications and software, they usually lack the power to cope at a suitable level of performance.

Around 1.5 Million computers end up on landfill sites around the UK every year. The problem is that, not only does this contribute to the problem of E-Waste, which damages the environment, but also there are a number of schools and small businesses in poorer countries that would love to have these machines.

There are some charities that take these unwanted machines, wipe the hard drive to Ministry of Defence standards and transport them to countries that need them. In the majority of these countries, over 95% of children will leave school never having touched a computer. Getting the PC’s to the designated countries is classed as the easy part. The harder part is training teachers and getting technicians to maintain the computers when they go wrong.

There have been some proposals to tackle the problem of recycling. One is to add a surcharge onto the purchase of new computers. This surcharge will then be put towards funding e-collection programs. This idea was met with some opposition, it was argued that the buyer would have to pay more and they would still not know of the correct way to dispose of the materials.

To try and avoid this added surcharge, there are some large computer companies that offer recycling programs to reduce the number of computers that end up on landfills, though there has been some criticism towards one company’s program.

For a fee the company will arrange for a package to be picked up and taken back to a recycling centre where parts are either salvaged for reuse or disposed of properly. On the face of it, this seems like a good idea, but the criticism comes from where the recycling is done. The company uses prison labour to recycle the PC’s at a reduced cost. It is argued that this is damaging legitimate recycling programs and also reduces the number of jobs in the market.

The company does also work alongside a non-profit charity organisation that works towards donating computers to groups that work with disabled children. Though they will only accept complete desktop systems or laptops that meet a certain criteria.

The main problem with recycling is cost. If the machine being replaced is fully functioning, then the best option would be to donate the computer to one of the non-profit organisations that will then pass them onto less privileged individuals. Otherwise, if the computer has no more use, then the recycling program is the only other option, to dispose of them properly without damaging the environment.

IP Telephony - What is it?
by Yuri Tang ©2004

IP Telephone is essentially a VoIP (voice over IP) system where calls are delivered over a standard IP based data network. The IP telephone handset replaces the old desktop phones, which, apart from operating just like a standard handset - also have number of features such as, an online-directory or other intranet based information displayed via an LCD panel on the phone. For internal calls these IP handsets will interchange packets of data. To make external calls, a gateway is used to convert the IP packets to phone company friendly signals.

Due to reduced equipment costs and better integration of the telephony system, it has been predicted that by 2008, up to 44 percent of the world’s corporate telephone lines may be IP-based. Despite this prediction, there are around 48 percent of companies that are not convinced that IP telephony will prove to be a worthwhile investment.

Significant cost savings can be made if the system is to be installed at a new office, which is to have a new network infrastructure. The reason for this is because only one set of wiring is needed - because the voice and data network can be put onto one system. This is one of the main reasons why 48 percent of companies are not convinced about investing in the system, due to the fact that a network system is already in place, and many companies are hesitant about writing off the investment made in analogue private branch exchange (PBX) systems, to install a VoIP system.

There are a number of issues to think about when installing a VoIP network. Firstly, the network has to be fast, reliable and of high quality. If this is not the case, or if segments of the network are bridged over slow connections, there is a possibility that the telephone calls may break up or swamp the network causing a problem for general network traffic. This should not be too much of a problem with the newer networks as most would fairly comment. Another issue to think about is that the IP telephone handsets need to be powered. This is normally achieved by an AC adaptor, plugged into the mains, though there is an option for the phone to be powered through the Ethernet wiring. It should also be taken into account that, to get the best out of a VoIP system it is necessary to spend some time and money on training the users. This way they will know what benefits are on offer and how to take advantage of them.

Cost seems to be a major factor in companies not installing a VoIP system, despite its benefits. Though with more companies going that way, it is probably safe to say that the price will be reduced and be more affordable.
(c) 2004, Lottbridge Systems Ltd
Vol 1, Issue 5: Monday, 7th October 2004