BTCL (Bangladesh Telecommunications Company Limited) is the largest telecommunications company in Bangladesh. It was founded in 1971 as BTTB and was renamed BTCL in 2008. BTCL provides various telecommunication services including landline phone services, internet, leased lines, and international connectivity. It has a fiber optic transmission backbone and microwave links that connect exchanges and data nodes across Bangladesh. However, some summaries indicate BTCL services have deteriorated in certain areas and it faces competition from other providers. BTCL is taking steps like introducing new internet packages and reducing prices to increase customers.

1. Subrata Paul
ROLL: 13015411
DEPT:COMPUTER SCIENCE AND
ENGINEERING

3. BTCL
BTCL or Bangladesh Telecommunications
Company Limited is the largest
telecommunications company in Bangladesh.
The company was founded as the Bangladesh
Telegraph & Telephone Board (BTTB)
following Bangladesh's independence in 1971.

4. ABOUT BTCL
• On July 1, 2008 the BTTB became a public
limited company and was renamed as BTCL.
• The Bangladesh government initially owned
all BTCL shares, but stated it would sell the
shares to the public the following year.
• The value of BTCL is estimated to be at Tk
15,000 crore. BTCL has a total of 12,636
officials and staff.

5. ABOUT BTCL
• BTCL provides land-line telephone
services in the urban areas, domestic
long-distance and international services.

6. The connectivity of BTCL in Bangladesh

7. Transmission system of BTCL in
Bangladesh
• In order to connnect nation wide digital exchanges and data nodes BTCL
has a strong nation wide transmission network upto Upazilla level and
some cases extended upto Union Parishad level.
• This nation wide transmission network of BTCL is mainly composed of
Optical Fiber,Microwave,UHF and VHF radio links.
• The backbone network is mainly composed of Optical Fiber and PDH/SDH
microwave and spur links are mainly Microwave,UHF and VHF radion links.
• Presently out of 64 districts 56 districts are connected with Optical
Fiber.Also 130 Upzillas and 108 unions are connected through optical
fiber.BTCL is providing backhaul service from submarine landing station
COX’S Bazar to Moghbazar using optical fiber cable.
• BTCL is connected with international arena through submarine cable(SEA-
ME-WE-4) and Satellite.

8. Transmission system of BTCL in
Bangladesh
• Becoming a member of South East Asia-
Middle East-Western Europe-4 (SEA-ME-WE-4)
consortium, Bangladesh received initial
capacity of 7.5 Gbps. Presently, capacity of
Bangladesh in SEA-ME-WE-4 submarine Cable
System of BSCCL is around 200 Gbps.

9. LOWER BANDWIDTH
• BTCL provides Leased Internet Access (Broadband) to
corporate offices, Universities, Financial organizations,
International organizations etc.
• Through DDN nodes installed at 41 districts. 64 Kb/s to 2048
Kb/s Internet is being provided using these nodes through
commonly known telephone cables.
• This service is available within the cable network of the
following locations.
• [Dhaka] Babubazar :: Basabo :: Cantonment :: ChawkBazar ::
Demra :: DEPZ :: Fakirapool :: Gandaria :: Gulshan :: Lalbag ::
Mirpur :: Mogbazar :: Nilkhet :: Ramna :: Savar :: Sayedabad ::
Sher-e-Bangla Nagar :: Uttara

10. LOWER BANDWIDTH
• [Chittagong] Agrabad :: Bayezid :: CEPZ :: Kalurghat ::
Muradpur :: Nandankanon :: Sagarika
• [Gazipur] Gazipur :: Tongi :: Konabari
[Narayangonj] Narayangonj :: Siddhirgonj
[Khulna] Central :: Khalishpur
[Pabna] Pabna :: Ishwardi
[Jessore] Jessore :: Sharsa
[Bagerhat] Bagerhat :: Mongla

11. LOWER BANDWIDTH
• B.Baria :: Barishal :: Bogra :: ChapaiNawabgonj
:: Comilla :: Cox'sBazar :: Dinajpur :: Faridpur ::
Feni :: Jhenaidah :: Kushtia :: Lalmonirhat ::
Magura :: Manikganj :: Moulavibazar ::
Munshiganj :: Mymensingh :: Naogaon ::
Narshingdi :: Natore :: Netrokona ::
Nilphamary :: Noakhali :: Panchagar ::
Patuakhali :: Rajshahi :: Rangamati :: Rangpur
:: Sirajgonj :: Sunamganj :: Sylhet :: Tangail ::
Thakurgaon.

12. HIGHER BANDWIDTH
• BTCL has also installed two PoPs at Dhaka (Moghbazar & Gulshan
Exchange) and one PoP at Chittagong (Nandankanon) to deliver
higher bandwidth through optical fiber. The optical fiber has to be
arranged by the customer.
• BTCL provides only GE-SFP port at Dhaka PoPs and GE-
SFP/FE(electrical) port at Chittagong PoP for the connection.
Customers are requested to arrange the corresponding interface at
their end equipment. Specification of SFP at BTTB End is as follows:
• 1. Speed: 1250 Mbps (GE)
2. Distance: 10 km
3. Wavelength: 1310 nm
4. Mode: Single Mode (SM)
5. Transmit Power, Pout: -9.5 dBm (minimum) ~ -3 dBm
(maximum)
6. Receive Power, Prec: -20 dBm (minimum) ~ -3dBm
(maximum)

13. SERVICES PROVIDED BY BTCL
• Landline phone services throughout the country(PSTN-
local,NWD,ISD)
• VALUE ADDED SERVICES IN LAND PHONES:
• Call barring
• Call waiting
• Conference call
• Call forwarding
• Hot line
• INTERNET SERVICES:
• Dial up service(56 kbps)
• ADSL(128-1024 kbps)
• Leased internet (64 kbps,1 Mbps,Multiple)
• ADSL VPN

14. SERVICES PROVIDED BY BTCL
• Point to point and point to multi-point voice grade lacal
leased line
• Digital Data Node(DDN) services (n*64 kbps,E1 etc)
• International Private Leased Circuit(IPLC) (n*64 kbps,E1
,E3,STM1,STM4)
• .bd Domain Name Registration
• Web Hosting and DNS hosting
• Inter Operator Connectivity
• Co-location services
• International Bi-lateral voice Carrier
• Web based form to submit complain and interactive
discussion blog.

16. BTCL services in Rajshahi reached to
the lowest
• The service of Bangladesh Telecommunication Company Limited (BTCL)
in Rajshahi district has deteriorated.
Most of the telephones in the city are either disconnected or the
Internet service provided by the company is irregular and slow.
Due to non-replacement of stolen wires, poor management and non-
realisation of telephone bills for months the service of BTCL in the
district has turned for the worst.
Those who used BTCL Internet service are now also using other services
like, GP, National Phone and Citycell as those are regular and speedy in
service.
Even after offering free connection, the BTCL is failing to draw
consumers.
The BTCL will lose customers in Rajshahi district if the company does not
take immediate measure to improve its services.

17. BTCL and its Future in Bangladesh
• To increase the number of customers, the state-owned
Bangladesh Telecommunications Company Ltd (BTCL),
has now introduced three new packages and reduced
charges for its other packages
• Under the new pre-paid packages, customers can
download 2 gigabytes at a speed of 128 kbps at Tk 300,
8 gigabytes with 256 kbps at Tk 1,200 and 16 gigabytes
with one megabyte speed at Tk 2,400.
• BTCL charges only Tk 500 as registration fee and Tk
600 taka as setup configuration cost.

18. BTCL and its Future in Bangladesh
• BTCL has two packages for day and night. For
the daytime (from 8am to 8pm), the charge
for 128 kbps is Tk 2,100, for 256 kbps the
charge is Tk 4,500 and for 2,000 kbps the cost
is Tk 6,000—all for a three-month period.

19. Thanks to everyone….