Provins Sirock Technology Site

Archive for the ‘Communications’ Category

Indian space scientists received signals of INSAT-4A, which was launched by Ariane-5 rocket from Kourou in French Guyana. The satellite signals have been acquired by Master Control Facility at Hassan in Karnataka.

It will be the first satellite to be launched in INSAT-4 series. It carries 12 high power Ku-band transponders to meet the requirement of direct-to-home (DTH) television services apart from 12C-band transponders to augment the INSAT capacity for communication and DTH services.
Weighing 3,080 kg at lift-off, INSAT-4A is the heaviest satellite of the Indian Space Agency till date.
INSAT will have about 225 active transponders in various frequency bands by 2007, which can cater to the demand up to 11 GBPS capacity with present days technology. Along with INSAT-4A, which is the 12th satellite for which ISRO has chosen the European launcher, Ariane Placed MSG-2 weather satellite for the European Organization EUmetsat into the orbit.
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After many years of faithful service, I recently realised that it was time to trade in my trusty old mobile phone. Despite the jeers from my friends, I had held on to my chunky old phone well after my phone company had offered me a free upgrade. It had always performed reliably and more importantly, I knew exactly where I stood when it came to use it.

As you may have guessed, I like my gadgets and was fairly excited about the prospect of getting a new phone, especially with the incredible host of features now available on the latest phones. After much research, I settled on the Sony Ericsson K750i with its colour screen, digital camera (with panoramic feature), video capture, bluetooth connectivity, access to the internet, MP3 Player and FM Radio. It also allows use of a separate memory card up to 1Gb so I can store loads of photos, songs and video. It made phone calls too!

After receiving the phone I started to look into the daunting prospect of learning how to use the thing. The first task I had to tackle was getting all my phone numbers onto the phone. After consulting the manual, I found that it was possible to copy my address book directly from Microsoft Outlook on my computer over to the phone, saving me from having to manually key in all of my phone numbers. This would save me a lot of time, as long as I could get it to work!

All I needed to do was install the phone’s software onto my computer from the supplied CD-ROM and connect the phone to my computer using the supplied data cable. I also had the option of connecting my phone to my computer wirelessly using the Bluetooth facility to connect to my computer, this sounded very interesting, but meant I would have to get a USB Bluetooth Dongle for my computer, so I decided to leave that for later.

As these things have a habit of not working first time round, I thought I would follow the instructions to the word, rather than just delving in as I normally do! To my surprise, after following the steps in the Quick Set-up Guide, it actually worked! it was really that easy, my phone was connected to my computer and it worked. I made a few setting changes (as mentioned in the instructions) on the mobile phone software and within moments I had transferred all of my telephone numbers and addresses into my phone! The great thing here is that now I can update any new person and telephone number to my phone and my computer at the same time, all I need to do is connect the phone to the computer and one button automatically updates my computer with information on my phone or vice versa.
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ICMP is a required element to implement Internet Protocol. ICMP is a control protocol which means that it does not carry any application data, but data about the status of the network itself. ICMP is used to report:

- Errors in the core communications of the network applications
- Availability of remote hosts
- Network traffic and congestion
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HyperTerminal is communications software used to connect to other computers over modems, RS-232 serial connections, or telnet. In order to use HyperTerminal, the user will have to know details about the computer they wish to connect to, such as the number to dial or the IP address.

HyperTerminal can be accessed by:

* Clicking Start on the desktop
* Going to All Programs
* Clicking Accessories
* Then Communications
* Next clicking HyperTerminal to start the program

For first time users, a window will open asking you to insert “Location Information”. This will include information such as your country, area code, the way you would like to connect (modem/TCP) or if your phone uses tone or pulse dialing. Then click OK.
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