VPN

A Virtual Private Network (VPN) is a network technology that creates a secure network connection over a public network such as the Internet or a private network owned by a service provider. Large corporations, educational institutions, and government agencies use VPN technology to enable remote users to securely connect to a private network.....Read more for details

BLink [Digital Data Network (DDN)]

Introduction:

BTCL introduced Digital Data Network (DDN) service in the year 2000 to allow point to point domestic data connectivity & International Private Leased Circuit (IPLC) termination inside Bangladesh. 64Kbps to 2Mbps data circuits are available through DDN nodes. Subscriber is connected through telephone cable (copper local loop DSL). Transmission backbone among exchanges consists of optical and microwave network. DDN service is available in 41 district headquarters through 71 nodes. Present capacity is more than 1000 high speed point to point leased line internet & corporate connectivity, 60% of which is in use.

Areas where DDN service is available:

[Dhaka] Babubazar :: Basabo :: Cantonment :: ChawkBazar :: Demra :: DEPZ :: Fakirapool :: Gandaria :: Gulshan :: Lalbag :: Mirpur :: Mogbazar :: Nilkhet :: Ramna :: Savar :: Sayedabad :: Sher-e-Bangla Nagar :: Uttara
[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


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.

Who are eligible for DDN connectivity?

Point to point Leased line data connectivity is provided mainly to the organizations for internal communications between their different offices/industries/sales offices located in same cities or different cities. In special circumstances the connectivity can be given to connect more than one legal entity if they form “Close User Group”. The following entities can fall under “Close User Group”
1. Corporations/Holding companies and their subsidiary companies
2. Companies under the same management
3. Producers of goods and services and their wholesaler or selling agents.
4. Computerized Reservation System service provider owned by Airline organizations.
5. Shared networks of Banks for using Automatic Teller Machines (ATMs), Electronic Point of Sales or credit card authorization terminals etc.
6. Producers of same types of goods and services.
7. Travel agents issuing tickets of the members Airlines whose network they use.
8. Registered Financial Institutions working as depositories/Stock (security) manager/Mutual Fund operator and their agents and dealers.

Prohibited:

Termination of DDN at either end to Public Switched Telephone Networks (PSTN) is not permitted.

Transmission of voice in any form is not normally allowed. This will need prior approval of BTCL and an annual fee @50% of the annual circuit rental shall be applicable.

Internetworking for general communication with other organizations using Leased Circuits is not normally allowed. It will need a prior approval of BTCL and an annual Termination fee of Tk 1,00,000 per termination.

Discount:

Accredited universities, colleges, schools, madrasha, training and research institutes, government/semi government/autonomous organizations and non profit research organizations shall get 25% discount on the rental charges provided that no commercial data will be transmitted over it. Discount will not be applicable for temporary connection.

MODEM:

You must have the following modems at both ends for DDN point-to-point connectivity:
• up to 128 Kbps- Alcatel 2753 Mainstreet HDSL DTU/NTU modem
• up to 1024 Kbps- Alcatel 2801 Mainstreet HDSL DTU/NTU modem
• up to 2048 Kbps- Alcatel 2902 Mainstreet HDSL DTU/NTU modem BTCL does not provide modem for regular connection. Modem is only rented for temporary connection.

DDN Forms Download:

Application Agreement

Other Terms:

At least one month prior notice is required to discontinue services.
For long term connection or temporary connection rented on monthly basis, any broken month will be considered as a full month.


Minimum charge for temporary connection is equivalent to 5 days charges.

Contact:

for BLink (DDN)/ MPLS VPN/ Dial-up Internet/ Email on btcl.net.bd domain/ .bd domain registration service/ Web and DNS hosting service/ Co-location Service for operators/ IPLC services, please contact:   Md. Shafiqur Rahman, Divisional Engineer (Administration & Coordination)
Data and Internet Services Division, BTCL, Mogbazar, Dhaka-1217
Phone: 9354200, Fax: 9357877, Email: deanc@btcl.net.bd


BLink (DDN) Charges and Rates

Previous rate of 30.10.2005 was revised by BTCL Tariff Committee and was approved by BTCL Board of Directors on 41st meeting (Aug 2010)
1.0 Point to point circuit (For Intercity or Multi-Exchange Area)
1.1 One time charge for Multi-Exchange Area (Tk)  
Speed (Kbps) 64 128 256 384 512 768 1024 2048
Registration 1000 1000 1000 1000 1000 1000 1000 1000
Testing Installation 5000 5000 6000 6000 7000 8000 9000 10000
Modem* 65000 65000 95000 95000 95000 95000 95000 200000

* DDN Modem supplied by BTCL is optional . Modem price is shown for one end per year. Modem shall have one year warranty.

1.2 Annual Rental Charge (TK)
Distance (Km) Speed (Kbps)
64 128 256 384 512 768 1024 2048
10 12600 18720 30600 41520 50400 67200 82800 118200
15 14400 21960 36000 50160 61200 81600 104400 154200
20 16200 25200 41400 58800 72000 96000 126000 190200
25 18000 28440 46800 67440 82800 110400 147600 226200
30 19800 31680 52200 76080 93600 124800 169200 262200
35 21060 33960 55980 82140 101160 134880 184320 287400
40 22320 36240 59760 88200 108720 144960 199440 312600
45 23580 38460 63540 94200 116280 155040 214560 337800
50 24840 40740 67320 100260 123840 165120 229680 363000
55 25920 42720 70560 105480 130320 173760 242640 384600
60 27000 44640 73800 110640 136800 182400 255600 406200
65 28080 46560 77040 115800 143280 191040 268560 427800
70 29160 48540 80280 121020 149760 199680 281520 449400
75 30240 50460 83520 126180 156240 208320 294480 471000
80 31320 52440 86760 131400 162720 216960 307440 492600
85 32400 54360 90000 136560 169200 225600 320400 514200
90 33480 56280 93240 141720 175680 234240 333360 535800
95 34560 58260 96480 146940 182160 242880 346320 557400
100 35640 60180 99720 152100 188640 251520 359280 579000
105 36540 61800 102420 156420 194040 258720 370080 597000
110 37440 63420 105120 160740 199440 259920 200880 615000
115 38340 65040 107820 165060 204840 273120 391680 633000
120 39240 66660 110520 169380 210240 280320 222480 651000
125 40140 68280 113220 173700 215640 287520 413280 669000
130 41040 69900 115920 178020 221040 294720 424080 687000
135 41940 71520 118620 182340 226440 301920 434880 705000
140 42840 73140 121320 186660 231840 309120 445680 723000
145 43740 74760 124020 190980 237240 316320 456480 741000
150 44640 76380 126720 195300 242640 323520 467280 759000
155 45540 78000 129420 199620 248040 330720 478080 777000
160 46440 79620 132120 203940 253440 337920 488880 795000
165 47340 81240 134820 208260 258840 345120 499680 813000
170 48240 82860 137520 212580 264240 352320 510480 831000
175 49140 84480 140220 216900 269640 359520 521280 849000
180 50040 86100 142920 221220 275040 366720 532080 867000
185 50940 87720 145620 225540 280440 373920 542880 885000
190 51840 89340 148320 229860 285840 381120 553680 903000
195 52740 90960 151020 234180 291240 388320 564480 921000
200 53640 92580 153720 238500 296640 395520 575280 939000
205 54360 93900 155880 241980 300960 401280 583920 953400
210 55080 95160 158040 245400 305280 407040 592560 967800
215 55800 96480 160200 248880 309600 412800 601200 982200
220 56520 97800 162360 252360 313920 418560 609840 996600
225 57240 99060 164520 255780 318240 424320 618480 1011000
230 57960 100380 166680 259260 322560 430080 627120 1025400
235 58680 101640 168840 262680 326880 435840 635760 1039800
240 59400 102960 171000 266160 331200 441600 644400 1054200
245 60120 104280 173160 269640 335520 447360 653040 1068600
250 60840 105540 175320 273060 279840 453120 661680 1083000
255 61560 106860 177480 276540 344160 458880 670320 1097400
260 62280 108120 179640 279960 348480 464640 678960 1111800
265 63000 109440 181800 283440 352800 470400 867600 1126200
270 63720 110760 183960 286920 357120 476160 696240 1140600
275 64440 112020 186120 290340 361440 481920 704880 1155000
280 65160 113340 188280 293820 365760 487680 713520 1169400
285 65880 114600 190440 297240 370080 493440 722160 1183800
290 66600 115920 192600 300720 374400 499200 730800 1198200
295 67320 117240 194760 304200 378720 504960 739440 1212600
300 68040 118500 196920 307620 383040 510720 748080 1227000
305 68670 119640 198840 310680 386820 515760 755640 1239600
310 69300 120780 200700 313680 390600 520800 763200 1252200
315 69930 121920 202620 316680 394380 525840 768960 1264800
320 70560 123060 204480 319740 398160 530880 778320 1277400
325 71190 124200 206400 322740 401940 535920 785880 1290000
330 71820 125340 208260 325800 405720 540960 793440 1302600
335 72450 126480 210180 328800 409500 546000 801000 1315200
340 73080 127560 212040 331800 413280 551040 808560 1327800
345 73710 128700 213960 334860 417060 556080 816120 1340400
350 74340 129840 215820 337860 420840 561120 823680 1353000
355 74970 130980 217740 340920 424620 566160 831240 1365600
360 75600 132120 219600 343920 428400 571200 838800 1378200
365 76230 133260 221520 346920 432180 576240 846360 1390800
370 76860 134400 223380 349980 435960 581280 853920 1403400
375 77490 135540 225300 352980 439740 586320 861480 1416000
380 78120 136680 227160 356040 443520 591360 869040 1428600
385 78750 137820 229080 359040 447300 596400 876600 1441200
390 79380 138900 230940 362040 451080 601440 884160 1453800
395 80010 140040 232860 365100 454860 606480 891720 1466400
400 80640 141180

234720

368100 458640 611520 899280 1479000

Other Data/ Internet Services

IPLC (International Private Leased Circuit)
Voice or data at 64 kbps, nX64 kbps, E1, E3, STM-1, STM-4 etc. 
International bilateral Voice Carrier Service etc.
Please contact: Director (International), BTCL,  2nd floor, 37/E Eskaton Garden, Dhaka
Phone: +880 2 8312266 Fax: +880 2 8363987 Email: dirint@btcl.net.bd

 Divisional Engineer (Telex/TP), BTCL, Mogbazar, Dhaka
 Phone: 8361699 for details or mail detelex@btcl.net.bd