The Information Technology has become the key point for our everyday life. Once upon a time there was no medium of communication was available for a real time communication between two end points. Then day by day the messenger has came to carry on information from one point to another. After then the hand written letter came, and the day by day it has improved.
After a while, it comes as little surprise that we are managed with the technological competence to communicate easily with anyone, anywhere and at any time in many different ways -i.e. voice, data, facsimile, e-mail, image and video - and all of this at an affordable cost judging by the user, who are using internet cafés at every corner in the cities. Thus modern civilization has effectively been reduced to an international markets and information exchange has experienced a massive explosion. However, it is also notify that the biggest obstacle to the full deployment of this technology is created by the world's fragmented telecommunications networks - especially in developing countries.
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Bangladesh is a developing country in South Asia. Among other developing countries, Bangladesh was delayed to introduce internet technology. The internet facility came in Bangladesh in 1993 through UUCP (Unix-to-Unix copy) email connectivity by the ISP (Internet Service Provider) Information Services Network (ISN-www.bangla.net) and IP (Internet Protocol) connectivity came in 1996. Online internet facility began in June 1996, when VSAT (Very Small Aperture Terminal) was legalized to operate as ISP in the country's private sector and offered internet services to the public through a dial-up network. It was the beginning of a revolution in Bangladesh towards the digital age of twenty first century. Since then, many conversations have been done about the use of internet in industry, business, communication, education, research, and in every other field of life. But the internet penetration rate in Bangladesh is as low as 0.4%, compared to other developing countries like -Thailand 24.4%, Maldives 18.1%, Vietnam 24.8%, India 7.0%, Pakistan 10.6%, and Sri Lanka 5.5% (Internet World Stats, June 2009).  
The IT infrastructure in Bangladesh is rapidly changing in a comparison to other business sectors. Over the years, Bangladesh has been planning to build its internet infrastructure support for the IT industry. In 2006, the country ensured overall connectivity and has joined the 'Submarine Super Highway' through SEA-MEA-WE-4 consortium using DWDM (Dense Wavelength Division Multiplex) technology with 1.28 terabits per second speed. Up to 20 million voice calls or 60,000 broadcast television channels at the same time can be accommodated due to the modern DWDM technology, which is capable to transport 64 wave lengths at 10 Gbps. 
Bangladesh Telegraph and Telephone Board (BTTB) is the official custodian of the new connectivity backbone. The BTTB authority has recently exposed an operation plan of the submarine connectivity. High-speed internet connectivity through the fiber optics cables which costs about USD 2.67/per month for 1 kbps connection, and the existing VSAT backbone will keep on remain the major internet infrastructure until the new backbone (Submarine Cable Connectivity) operates 100 per cent. There are at least 150 ISPs in whole over the country and the competition among internet service providers has resulted in significant progress in their services to their customers. Now a day's most of the ISPs are providing 24/7 on-site and as well as online technical support to their customers.  
Although the connection to the Submarine Super Highway Cable presents incredible enhancement opportunities for Bangladesh, the present situation in terms of internet connectivity is not at all satisfactory. The present VSAT backbone connectivity is slower in nature and is flat to technical difficulties. The new Submarine backbone on the other hand, still has to be streamlined. However, the government as well as non government organizations are also taking initiatives to build up a high quality infrastructure due to potential interests of users.
Bangladesh has been explored a huge boom in the last few years in IT sectors as well as Telecommunication sectors. Several private and public telecommunication operators have established their network whole over the country. As the expanding of Bangladesh Telegraph and Telephone Board (BTTB) operation to whole over the country, by lodging to improve the network performance and tending to introduce latest technologies to the people. The rapid expansion of data communication infrastructure is unique in this situation.
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The private mobile phone operators are currently utilizing nationwide 1800-kilometer long optical fiber network under Bangladesh Railway. Bangladesh Telegraph and Telephone Board (BTTB) have already established optical fiber link in most cities in Bangladesh. The nationwide optical fiber backbone also connected with the SMW4 submarine cable is the first step towards the next generation network in Bangladesh.88
Operating in the public sector, BTTB took internet to the cities and as well as rural-semi urban areas of Bangladesh. Starting from the capital city of Dhaka, they have provided dial-up ISP services to all the 64 districts of Bangladesh. BTTB also have some facilities in some upazillas (small provinces under district) as well. It is also assured that BTTB will connect all the 484 upazillas of the country within next two years. BTTB is using their countywide landline telephone exchanges to spread the internet connectivity all over the country. Currently the have their DDN (Digital Data Network) exchanges at Dhaka, Chittagong, Rajshahi, Khulna, Barisal, Bogra, Comilla, Jessore, Rangpur and Gazipur and distributing bandwidth using DDN services too. Currently ISPs are in Bangladesh using only VSATs to connect with the rest of the world. Some private organizations have also their own VSATs, while the rest of leased lines from the VSAT owners and provide internet services to their customers. Accessing the internet in Bangladesh is higher cost than as compared to the average income of the people. The software development industry has suffered a lot due to the heavy charges of internet and the slower data rate. ISPs are not capable of reducing the charges due to the higher cost of bandwidth. Only having the submarine cable connection is supposed to solve the problem. Now a day, Mobile internet has also been established in Bangladesh. Grameen Phone, the largest mobile phone operator in Bangladesh and BDCom a local ISP has already introduced WAP internet services. WAP has not been popular as the charges are very high compared to the landline operator. Above all SMS and MMS are more popular to the mobile users.  
Bangladesh having same problem of IXP (Internet Exchange Point) like other less developing country. Bangladesh has no IXP (Internet Exchange Point). The reason according to BTTB, the situation dominating telecommunication operator, is that the company has not been capable to secure funding from the government. As a government bound to dominate over telecommunications infrastructure, BTTB needs regulatory authorization (and budgeting) for any new services. So, the case for an IXP has not been realistic, even though it would save BTTB money, lower costs for users, and improve quality of service. The irrationality of Bangladesh's situation (and that of similarly IXP-less developing countries) can be seen in the results of a recent trace route from one Bangladeshi ISP to another: the data packets travelled from Bangladesh via satellite to Hong Kong, via satellite to the U.S.A, then to Canada, back to Hong Kong, and finally to their destination back in Bangladesh. Not surprisingly, the majority of Bangladeshi websites are hosts in the U.S.A. So, increasing the high speed of the internet in developing countries, the cost of internet connectivity and bandwidth must be reduced and the quality of service has to improve. 
The current status of computer and internet infrastructure in Bangladesh are summarized by the following: 
- Number of ISPs 219 (80% ISPs are located in Dhaka)
- Number of Internet Users 0.3 Million
- Internet users 19.04 (per 10,000 inhabitants)
- Computer ownership 0.782 (per 100 inhabitant)
- Number of active Cyber Cafés / Internet Kiosks 500
- Cyber Cafés / Internet Kiosks 0.19 (per 10,000 inhabitants)
- Bandwidth provided by Cyber Cafés 32 kbps - 4 mbps
- National bandwidth within the country 68 Mbps (data)
- National bandwidth to and from the country 112 Mbps
- Available Highest Bandwidth of link 10 Mbps
The costs of bandwidth (as in Dhaka city only) are summarized by the following:
- Internet access Charges (Dial -up) 1.50 Tk- 0.20 paisa/ Min
- Unlimited access (Dial-up) Tk 1000/Month
- Broadband - 64 kbps Tk 10,000/month
- Broadband - 128 kbps Tk 15,000/month
- Broadband - 512 Kbps Tk 50,000/month
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In respect to infrastructural disadvantages, on an average stakeholders identified that stable electricity as the top priority. But in general, the country lacks sufficient of electrical supply. The ISPs operating in Bangladesh, therefore, must make alternative solutions to ensure smooth power equipment in the form of UPS (Uninterrupted Power Supply) and IPS (Instant Power Supply). For these reason smaller projects, the addition cost due to power shortage may not be important, but for larger projects the cost of a project have to be increase.
- http://www.ambdhaka.um.dk/NR/rdonlyres/44DD827A-2A1B-41A5 8180E19A68724A11/0/BangladeshITandtelecommunicationindustry.pdf