Thursday, May 15, 2008
Perfect Husband !
Several men are in the locker room of a golf club. A cell phone on a bench rings and a man engages the hands free speaker-function and begins to talk.
Everyone else in the room stops to listen.
MAN: "Hello."
WOMAN: "Honey, it's me. Are you at the club?"
MAN: "Yes."
WOMAN: "I am at the shops now and found this beautiful leather coat. It's only £1,000. Is it OK if I buy it?"
MAN: "Sure, go ahead if you like it that much."
WOMAN: "I also stopped by the Mercedes dealership and saw the new 2008 models. I saw one I really liked."
MAN: "How much?"
WOMAN: "£45,000."
MAN: "OK, but for that price, I want it with all the options."
WOMAN: "Great! Oh, and one more thing .....the house I wanted last year is back on the market. They're asking £450,000."
MAN: "Well, then go ahead and give them an offer of £400,000. They will probably take it. If not, we can go the extra 50 thousand. It is really a pretty good price."
WOMAN: "OK. I'll see you later! I love you so much!!"
MAN: "Bye! I love you, too."
The man hangs up. The other men in the locker room are staring at him in astonishment, mouths agape.....
Then he smiles and asks: "Anyone knows to whom this phone belongs to?"
forgot to mention subject in mail?
Forgot to mention subject in mail
Forgot to mention subject, while writing an official mail ??
Yes.... It's a concern for all.... A mail without a subject brings a bad impression on us.
To avoid this just follow the simple steps mentioned below and see the result
Steps:
1. Open your outlook
2. Press Alt+F11. This opens the Visual Basic editor and then Press Ctrl+R which in turn open Project-Project 1 (left side)
3. On the Left Pane, one can see "Microsoft Outlook Objects" or "Project1", expand this. Now one can see the "This Outlook Session".
4. Double click on "ThisOutLookSession". It will open up a code pane on the right hand side.
5. Copy and Paste the following code in the right pane. (Code Pane) and save it
Private Sub Application_ItemSend(ByVal Item As Object, Cancel As Boolean)
Dim strSubject As String
strSubject = Item.Subject
If Len(Trim(strSubject)) = 0 Then
Prompt$ = "Subject is Empty. Are you sure you want to send the Mail?"
If MsgBox(Prompt$, vbYesNo + vbQuestion + vbMsgBoxSetForeground, "Check for Subject") = vbNo Then
Cancel = True
End If
End If
End Sub
6. Now whenever u try to send a mail without subject, which will raise a pop-up to remind you.
I keep on waiting !!!
Its 7:45 a.m. and I stand here in the bus stop waiting for the office
bus to arrive. I stand here in the same manner as I did a few years
back waiting for my college bus. Little did I know then that things
would change so much in 2 years; the sky under which I am standing
seems to be looking at me and smiling .. It is perhaps the only thing
that has acted as a witness .. watching the transformation of a loud
and bubbly person into a quiet professional.
I wouldn't blame the professionalism for the change though. It is
destiny, or may be you could call it life. Yes Life, esoteric in the
true sense, for one does not understand why you meet hundreds of people
everyday, work with so many, and still remain lonely.
I am now in one of the corner seats in the bus, looking out of the
window watching people trying to catch up with "life" .. It's an hour's
journey and the only company that I generally have is the chatter of
the RJ. I seldom notice the person sitting next to me, for its going to
be yet another stranger or may be you could say another acquaintance.
It is annoying at times when the radio is switched off, not because I
am cut off from the melody but because I would now be thrust with
thoughts of the solitary journey ahead.
I can't help thinking about the short bus journeys to college ... well
it's a paradox to call a distance of 30 KMs "short", but that is how it
always seemed. A typical college day always begins in the bus with all
the familiar faces; you look forward for all your friends to get in
from the various stops, the reasonless giggles, the loud laughter that
were stifled to avert the eyes of the lecturers and professors who
would watch on us as if we were their prospective prey for the day ...
well as I said it was a different life then. The pleasant memories of
college are in itself good enough to save me from the misery of the bus
journey.
I notice that it is time for me to get down and flash my smile of
acknowledgement to all the known strangers that I see as I approach my
cubicle. A few of my colleagues greet me with their morning wishes and
as always, we exchange our pleasantries. Discussions jump to the
weekend plans and I wonder what I'd do over the weekend.
It would be just another day staring at the mobile, wishing it would
ring and bring back some wonderful moments that are now missing in life
or maybe the safer option would be to come to office, for it's my new
founded asylum these days. A few years back, weekends or weekdays
didn't matter to me, I was always busy. I always stood doubting the
authenticity of the wall clock that seemed to be in running too fast to
perceive its movement. Alas, now it seems as though my clock is
suffering from some kind of paralytic attack.
There is a time in life, where one needs to go ahead, leaving behind
your friends and carrying along only memories. You do make new friends,
but then you never get the old close ones ... you do meet people who'd
be so good to you that you could tell them anything and everything, but
you do not find a person to whom you needn't say things ... friends who
just know you. Occasional calls from such friends, have been the only
thing that I seem to look forward to ...However, I cant help but notice
the uneasy pause that lingers around the conversation ..A pause not
because of the relationship, but because it is too short a duration to
say everything, and of course you cannot completely rule out the
paucity of words!
As I sip coffee from the ubiquitous coffee mug, watching the drops of
rain, trickling down the tinted glass panes, veiling the scenic beauty
outside, I tell myself, may be there will be a day when things will
change, when life will offer a rewind, a recap of all the events and I
just have to wait.
Capricious are the ways of life, for I know there would be many who'd
be able to empathize with me, ironically, even the dear ones that I
miss this moment, waiting perhaps...!!
And I keep on waiting......
Saturday, May 10, 2008
Thursday, May 8, 2008
Sunday, May 4, 2008
Telecom Concepts.
Basic Telecom Concepts
Introduction
One way of understanding how telecommunications systems work and how they are changing is to consider a number of basic paired concepts. This short paper looks at nine such pairs and it should be emphasised that many of them are linked.
One-way v Interactive
Most broadcasting systems are one-way: the radio or television signal is transmitted to the listener or viewer and there is no means for the recipient to send back any information. By contrast, telecommunications systems � whether telegraph, telex, facsimile or telephony � are intrinsically two-way: both parties to the communication process have the same facility to send and receive the same kind of information. Increasingly, broadcasting systems are becoming more interactive as digital television allows viewers to use their sets to take part in electronic polling or order goods or send e-mail or access the Internet. Similarly more and more Web sites are becoming interactive allowing the user to comment on a film or book a play or order a book.
Analogue v Digital
Analogue signals have a continuous wave-like form. The further the signal travels, the more likely it is to become degraded and therefore, over anything other than short distances, these signals are boosted in strength at various points in the network and any subsequent distortions are amplified at the same time. By contrast, digital signals are discrete in form and essentially represent power on or off or � to use the binary language of computers � nought (0) or one (1). Digital signals can be recreated at their destination in exactly the form they left their starting point despite any distortion along the way, since the only two possibilities for the original signal are 0 and 1. All communications networks � whether telecommunications or broadcasting, whether fixed or mobile � are increasingly becoming digital because the quality of the signal is so much better and the capacity of the network is so much greater.
Circuit switching v Packet switching
Traditionally telecommunications networks have connected the sender and the recipient through a series of circuits, controlled by switches or exchanges, which provide a dedicated, physical connection for the duration of the call. This provides a high-quality connection, but it requires considerable capacity that is often unused for a lot of the time. By contrast, data networks � which link computers rather than people � use a method of transmission in which the information is broken up into a multitude of tiny packets. These packets are switched to their ultimate destination through a multitude of routes and then reconfigured into the original order or message at the end of the transmission. Packet switching enables much more intensive use to be made of network capacity and therefore it is much cheaper. The Internet, which was designed to carry data and therefore uses packet switching, is increasingly being used to carry voice telephony at lower cost and (currently) poorer quality than traditional circuit switched networks. Soon, however, we will have IP (Internet Protocol) networks which will be able to carry voice as well as data with quality comparable to current telephone networks.
Fixed v Mobile
Until comparatively recently, all communications networks used fixed links whether these were wire, microwave or satellite. In the last 20 years, we have seen a growing proportion of calls carried on mobile networks. The first generation of mass market mobile networks were cellular; the second generation are called Personal Communications Networks (PCN) or Personal Communications Services (PCS); and the third generation � not yet in operation � will be called Universal Mobile Communications Systems (UMTS). What makes these mobile networks possible � and increasingly cheap � is microelectronics that has enabled the development of small and light handsets and sophisticated computers that can switch calls made while moving at speed. Over time, mobile telephony may well become a larger market than fixed telephony.
Geo-stationary satellites v LEO satellites
Until very recently, virtually all communications satellites have used a particular orbit called the geo-stationary or geo-synchronous orbit which is 22,240 miles (35,780 kms) above the earth�s surface. At this distance, the satellite travels around the globe once every 24 hours, so that it appears to be stationary above a particular spot on the earth�s surface (usually around the equator). The advantage of such an orbit is that only three-six satellites can cover the entire surface of the globe. The disadvantage of this orbit is that the signal has to travel so far up to the satellite and back to the earth that there is a time delay and � more seriously � large and expensive transmitters and receivers are necessary. By contrast, low earth orbit (LEO) satellites use much lower orbits � typically around 500-1,200 miles (or 800-1,930 kms) above the earth. The disadvantage of such orbits is than many more satellites are needed to cover the earth�s surface � the ill-fated Iridium system would have used 66 satellites � but the advantage is that the signal has much less distance to travel and therefore the handsets can be so much smaller, lighter and cheaper. In the next decade, LEO systems will enable access to advanced communications facilities almost anywhere in the world however remote.
Low bandwidth v High bandwidth
Bandwidth is a measure of the information-carrying capacity of a particular form of transmission and it is usually denoted in bits per second (bit/s) where a bit is a binary digit (that is, a nought or a one in computer terms). Services with low information content � such as basic voice telephony � only require low bandwidth and are called narrowband; services with more information content � such as video � require mid bandwidth and are called midband; and services with a great deal of information content � such as high definition television � require high bandwidth and are called broadband. Even a narrowband service like lower-rate data might need midband transmission if the intention is to download large volumes of data at high speed. Therefore the trend is for all communications networks to provide more and more bandwidth and the challenge to network operators is how to provide this in a cost-effective way.
Electrical signal v Optical signal
Twisted copper pairs and coaxial cables transmit signals in electrical form as a flow of electrons. By contrast, optical fibre transmits signals in the form of pulses of light generated by miniature lasers and received by tiny diodes. Both forms of transmission travel at the fastest speed known to physics, the speed of light which is approximately 186,000 miles per second (or 300,000 km per second). Currently all switching is done electrically, so that light signals are converted into electrical signals for the switching process and then afterwards reconverted back into light signals. However, in future we can expect the development of optical switches. Indeed developments may be so profound that some have suggested that, if the last century was that of the electron (electricity), then this century will be that of the photon (photonics).
Basic signal v Processed signal
Frequently communications networks process basic signals in order to increase the capacity of the network. One effective means of increasing the range or number of services that can be carried on any particular cable or wireless system is to compress the basic signal, so that much of the redundant information is removed before transmission. For instance, the information in the 30 frames that make up a second of video can be compressed from about 27 million to 1 million bits without serious loss of quality. Another way to enhance the capacity of a transmission system is to carry different types of signal or service at the same time. This can be done by multiplexing techniques that for instance mix voice and data signals on the same transmission path. A whole variety of compression and multiplexing technologies are now massively expanding the capacity of communications networks.
Stand-alone networks v Converged offerings
Traditionally communications networks have been created to serve specific purposes, such as the broadcasting network for television, the telephone network for voice, and the Internet for data. Increasingly both physical networks and customer offerings are converging because digitalisation of networks makes this possible and competitive marketplaces make it desirable. At least three types of convergence are occurring: between voice and data through services like ISDN and networks like the Internet; between telecommunications and broadcasting through telephone companies offering video on demand and cable companies providing telephony service; and between fixed and mobile telephony as customers are offered packages combining both services and phones are developed that can be used in the home or office or on the move.







