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
 
2.0     Point to point circuit (Within same node/exchange area)
2.1. One time Charge (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.

 

2.2 Annual Rental Charge (Tk)

 

Distance (Km)

 

Speed (Kbps)

64 128 256 384 512 768 1024 2048
5 12500 17433 31833 42500 52500 70500 85833 124167
10 14000 18933 33333 44000 54000 72000 87333 128667
15 15000 19933 34333 45000 55000 73000 88333 131667
20 16667 21600 36000 46667 56667 74667 90000 136667