Chng II: H THNG CHUYN MCH

MC LC

LI NI U3CHNG I: GII THIU TNG QUAN V TRUNG TM4CHUYN MCH - TRUYN DN CNG TY IN THOI H NI 34CHNG II: MNG VIN THNG CNG TY IN THOI H NI 352.1 Mng chuyn mch.52.2.Mng Vin thng72.3 Cu hnh mng truyn dn82.3.1 S mng truyn dn82.3.2. Chi tit truyn dn quang hin nay.92.4.Thit b TTQ SDH FLX150/600142.4.1 Tng quan v h thng SDH:142.5 Thit b truyn dn SDH FLX600A152.5.1 Ch iu khin:162.5.2 Bo v ng truyn:172.5.3 Cc mc lin kt cho:172.5.4 Cc cng giao tip:172.5.5 Giao tip ng b:172.5.6 Qun l mng:172.6 .Thit b TTQ SDH ALCATEL 1660SMC172.6.1 Gii thiu chung172.6.2 Cc cu hnh thit b v ng dng mng ca h thng182.6.3 Cc thnh phn ca mt h thng 1660SM202.6.4 Gii thiu cc card chnh trn h thng:20CHNG III: CU TRC TRUYN DN CNG TY IN THOI H NI 3233.1 Tng quan v h thng thng tin quang.233.2 Cc Phng php o suy hao si quang263.2.1 o suy hai theo phng php 2 im263.2.1.1 Phng php ct si : ( cut - back - method )263.2.1.2 Phng php xen thm : ( Insertion loss method )273.2.2 Phng php o phn x v tn x ngc :293.3 Cu hnh nt mng313.3.1 Cu hnh nt mng v trng thi cnh bo313.3.2 Cch khai bo thm v xa lung.32KT LUN36TI LIU THAM KHO37

3

MC LC HNH V

Hnh 2.1: S cc HOST ni vi mng Quc gia7Hnh 2.2 Mng Vin thng Cng ty in thoi H ni 38 Hnh 2.3 Mng truyn dn Cng ty in thoi H ni 39Hnh 2.4 S mch vng Ring 110Hnh 2.5 S mch Vng Ring 210Hnh 2.6 S mch Vng Ring 311Hnh 2.7 S mch Vng Ring 411Hnh 2.8 S mch Vng Ring 511Hnh 2.9 S mch Vng Ring 612Hnh 2.10 S mch Vng Ring 712Hnh 2.11 S mch Vng Ring 813Hnh 2.12 S mch Vng Ring 913Hnh 2.14 S h thng FLX150/60014Hnh 2.15 S h thng FLX600A16Hnh 2.16: Cc lu lng truyn ti18Hnh 2.17: Cu hnh mng SDH18Hnh 2.18: Cu hnh TM19Hnh 2.19: Cu hnh ADM19Hnh 2.20: Cu hnh HUB-STM N19Hnh 2.21: Cc thnh phn c bn 1660SMC20Hnh 3.1 : o suy hao theo phng php ct si26Hnh 3.2 : o suy hao theo phng php xen thm suy hao27Hnh 3.3: Nguyn l o phn x & tn x ngc29Hnh 3.4 : B tr dng c o suy hao30Hnh 3.5 : o suy hao theo hai chiu30Hnh 3.6 Trng thi khi truy nhp thit b FLX150/60031Hnh 3.7 Trm HADONG-FLX31Hnh 3.8 Trm NGAICAU-FLX32Hnh 3.9 Trng thi cnh bo trm BINHPHU32Hnh 3.10 Kt ni cho trm NGAICAU33Hnh 3.11 S kt ni cho trm NGAICAU33Hnh 3.12 S kt ni cho trm gc HADONG-FLX34

LI NI UThng tin lin lc ra i t lu v hin nay l ngnh khng th thiu c bt c ni no trn th gii.N l yu t quan trng thc y nn kinh t pht trin, ng thi gp phn nng cao i sng x hi ca con ngi, c th p ng nhu cu pht trin v ngy cng kht khe ca x hi. Ngy nay h thng in t vin thng c xem l mt phng tin tinh tt nht c th trao i tin tc, s liu , iu ny i hi mng li thng tin pht trin khng ngng, mt mt tha ng s lng thu bao mt khc phi m ra nhiu loi dch v.Nhn chung h thng vin thng c s dng nhiu nht v ph bin l h thng thng tin in thoi. Ngy nay cc h thng thng tin in thoi, thng tin s liu, truyn dn hnh nh v thng tin di ng ngy cng pht trin a dng v phong ph. Cc mng thng tin c nng cp c v tnh nng cng nh cng ngh.Qua thi gian hc tp thc t ti Trung tm Chuyn mch- Truyn dn, c hc tp v tip xc vi cc thit b thc t,trong khun kh bn bo co thc tp em xin trnh by nhng vn d sauChng I: Gii thiu tng quan v Trung tm Chuyn mch Truyn dn.Chng II: Mng Vin thng Cng Ty in thoi H Ni 3Chng III: Cu trc truyn dn Cng ty in thoi H Ni 3.Em xin chn thnh cm n thy c gio khoa vin thng 1 v nghin cu vin Vin K thut Bu in tn tnh ch bo v hng dn v cn b Trung tm Chuyn mch Truyn dn gip em hon thnh t thc tp ny v thi gian c hn nn khng th trnh nhng thiu st rt mong c s gp ca thy c v cc bn.

H ng ngy thng nm 2011Sinh vin

CHNG I: GII THIU TNG QUAN V TRUNG TMCHUYN MCH - TRUYN DN CNG TY IN THOI H NI 3Trung tm Chuyn mch Truyn dn l trung tm u mi chuyn cung cp cc dich v v Chuyn mch, truyn dn, Internet bng rng cho cc trung tm Vin thng huyn v Vin thng ngoi ngnh nm trn a bn ca Cng ty in thoi H Ni 3.Chc nng, nhim v ca Trung tm Chuyn mch Truyn dn.1. T chc vn hnh ton b h thng chuyn mch, truyn dn, truy nhp Internet, truyn s liu v cc thit b ph tr do Cng ty qun l (bao gm cc thit b ca Cng ty v cc thit b trong v ngoi mng Vin thng H Ni lp t ti trn a bn .2. Trc tip khai thc, bo dng, ng cu x l s c thng tin ton b h thng thit b chuyn mch, truyn dn, mng truy nhp Internet, truyn s liu, c giao qun l.3. Trc tip iu hnh hoc phi hp thc hin vic thit lp kt ni vi cc n v trong v ngoi Cng ty; t chc qun l, x l s c m bo cht lng kt ni .4. Trc tip qun l, khai thc , vn hnh cc ODF tp trung. Phi hp vi cc n v o, kim tra v hn ni cp quang, u ni ODF do Cng ty qun l.5. Thc hin cng tc o, kim tra bo dng thit b vin thng, h thng chng st, dy tip t cng tc, dy t bo v, h thng ct lc st ti cc im lp t thit b vin thng, cng ngh thng tin nh k hng nm v t xut.6. T chc xy lp, m rng, iu chuyn thit b vin thng cng ngh thng tin. Tham gia kho st, gim st k thut, nghim thu bn giao cc d n xy lp, sa cha, nng cp thit b trn a bn ton Cng ty.7. Khai thc thng tin h I ti H ng. Phi hp vi cc Trung tm Vin thng tham gia phc v cng tc phng chng lt bo, gim nh thin tai hng nm.8. Qun l, bo dng cc trang thit b o, thit b d phng ca Cng ty.9. T chc theo di gim st cht lng, quan trc lu lng ton mng theo ch o ca Lnh o Cng ty.10. Phi hp vi cc n v lin quan thc hin cng tc chm sc khch hng.11. Thc hin nhim v khc khi c Gim c giao.

CHNG II: MNG VIN THNG CNG TY IN THOI H NI 3Mng Vin thng cng ty in thoi H Ni 3 thc cht l mng vin thng tnh H Ty c sau khi st nhp v a gii hnh chnh v Th H Ni lc din tch 22.000Km2, dn s 2 triu 700 ngn ngi, gm 14 Qun, huyn - Th x, c a hnh tri di trn 100 km. T pha bc xung pha nam phn lm 2 khu vc pht trin kinh t x hi. Khu Cng nghip dch v pha Bc vi trung tm l th x Sn Ty, khu thng mi dch v du lch pha nam trung tm l Qun H ng.2.1 Mng chuyn mch.Ti thi im hin nay, Cng ty in thoi H Ni 3 s dng 2 h thng chuyn mch A1000E10 v STAREX-VK. Ngoi ra trn mng hin nay cn s dng mt s tng i c lp nh DSE, DTS. Cu hnh mng Vin thng Cng ty in thoi H Ni 3 gm 2 HOST. HOST 1 c t ti H ng bao gm A1000E10 MA v MM v HOST 2 STAREX-VK c t ti Sn Ty. HOST 2 c c ti Th x Sn Ty, s dng Tng i STAREX-VK, gm 11 tng i v tinh. Cc Host c ni vi tng i Toll trung tm min bc.Bng m t chi tit cc nt chuyn mch trong tnh, dung lng lp t v dung lng s dng.TTa imt thit bThit b chuyn mch

Loi tng iDung lngCa trung k

LptS dngL/tC7R2

1Ba VRS - VK3,9043,71988

2Vn ThngRS - VK2,5602,03784

3Sn RS - VK1,4081,17484

4Tn LnhRSE - VK1,7921,43484

5Vit MngRSE - VK51240882

6 McRSE - VK51236482

7Chng MCSND5,1204,48587

8 Xun MaiCSND 15,1204,988168

CSND 25120162

9 Qung BCSND1,7921,612162

10 Vn SnCSND1,9201,67784

11Trng YnNECX2,04888982

CSND1,024994162

12an PhngRS - VK5,1205,06187

CSN Indoor1,024809162

13Tn HiRS - VK3,8403,50686

14Th AnCSN Indoor1,0242162

15TX.H ng A1000E10 22,52821,2524166431

STAREX-VK9,2169,15012844

16Ph LmCSND1,536647162

17Hoi cCSND 15,1204,643166

CSND 23,0721,970162

18Ngi CuCSND 14,3524,234166

CSND 21,024978162

19Dng LiuCSND4,0963,77186

20Li YnCSN Indoor1,024987162

21M cRS - VK3,9043,74384

22Knh oRS - VK1,5361,42682

23Hng SnRSE - VK1,8241,59283

24Ph XuynRS - VK4,9284,49087

25Vn imRSE - VK2,5602,49284

26Hng MinhRS - VK2,0481,66282

27Minh TnRSE - VK1,5361,10682

28Tn DnSDE1,8121,29882

29Cu GiCSN Indoor1,024838162

30Phc ThRSE - VK2,4322,07185

31Tam HipRS - VK3,0722,93186

DTS51225621

32Vng XuynRS - VK3,0722,70584

33 Quc OaiCSND5,1204,36087

34Ho PhCSND2,0481,45384

35Si SnCSN Indoor1,024304162

36TX. Sn TySTAREX-VK8,7048,402641020

37Xun KhanhRS - VK3,0723,01886

38ng MRS - VK1,5361,01382

39Sn LcCSN Indoor1,024156162

40Thanh OaiCSND3,3282,86086

41Bnh CSND3,5843,30186

42VcCSND2,2241,751165

43Thanh ThuCSND1,024919162

44Thch ThtCSND4,3523,459167

45Bnh PhCSND 14,0963,964167

CSND 21,024558162

46Ho LcCSND3,0722,559165

47Canh NuCSN Indoor 11,024650162

CSN Indoor 21,024549162

48Thng TnCSND 15,1204,599168

CSND 23,0722,846162

49TaCSND3,3283,119166

50Vn LaCSND1,5361,083162

51Qun GnhCSN Indoor1,024800162

52ng HoRS - VK4,9284,41187

CSN Indoor1,024951162

53Ch ChyRS - VK2,2401,76082

54Lu HongRS - VK1,5361,35784

55Ba ThRSE - VK1,3761,35082

56Qun TrnCSN Indoor1,024749162

57Kim ngCSN Indoor1,024345162

2.2.Mng Vin thngCu hnh mng Vin thng gm 2 HOST c t ti Trung tm chuyn mch truyn dn OMC s dng 2 loi Tng i l : A1000E10 c dung lng 120.000 s v STAREX-VK c dung lng 60.000 s) c u ni vi 11 Qun huyn, th x gm 51 trm v tinh ( V tinh A1000E10, V tinh STAREX-VK ), 1 HOST t ti Th x Sn ty s dng tng i STAREX-VK c dung lng 60.000 s bao gm 13 trm v tinh. Cc HOST c ni vi mng Quc gia theo s sau :

Host inh Tin HongHost Cu Giy

FLX 600AS7, R2HOST Sn tySTAREX-VKHOST H ngSTAREX-VKS7HOST H ngA1000E10n cc v tinhn cc v tinh

S7

S7

Hnh 2.1: S cc HOST ni vi mng Quc gia

Hnh 2.2 Mng Vin thng Cng ty in thoi H Ni 32.3 Cu hnh mng truyn dn2.3.1 S mng truyn dn

Hnh 2.3 Mng truyn dn Cng ty in thoi H ni 32.3.2. Chi tit truyn dn quang hin nay.Mng vng Ring ti Cng ty in thoi H ni 3 c u t 10 Ring c cc thit b khc nhau nh vng ring s dng thit b Alcatel 1660SMC, Huawei 2,5G, Huawei STM4, Fujitsu STM4, Fujitsu STM1, Huawei STM1,.- Vng Ring 1: S dng thit b Alcatel 1660SMC STM64 im u ti H ng qua cc Node Hoi c-an Phng-Sn Ty-Ho Lc-Xun Mai-Chng M-H ng c s chuyn mch bo v MSPRING trn 2 si cp quang. 3 trm u cui c kt ni vo trm Ho Lc s dng thit b Alcatel 1650SMC v thit b FLX 150/600 c dung lng STM1

Hnh 2.4 S mch vng Ring 1- Vng Ring 2: S dng thit b Alcatel 1660SMC STM64 im u ti H ng qua cc Node Thng Tn Ph Xuyn - ng Ho -H ng c s chuyn mch bo v MSPRING trn 2 si cp quang.

Hnh 2.5 S mch Vng Ring 2

- Vng Ring 3: S dng thit b Fujitsu STM4 ti u H ng s dng thit b FLX600 cc trm cn li s dng thit b FLX 150/600. cc trm ring FLX H ng Ta Minh Tn Hng Sn Vc H ng, s dng bo v MSPRING .

Hnh 2.6 S mch Vng Ring 3- Vng Ring 4: S dng thit b Fujitsu STM4 ti u H ng s dng thit b FLX600 cc trm cn li s dng thit b FLX 150/600. cc trm FLX H ng Ngi Cu - Quc Oai Bnh Ph - Thch Tht - ng M Sn Ty Phc Th - Tam Hip H ng ,s dng phng thc bo v MSPRING .

Hnh 2.7 S mch Vng Ring 4- Vng Ring 5: S dng thit b Fujitsu STM1 s dng thit b FLX 150/600 trm gm Sn Ty Vng Xuyn Vn Nam Sn Ty.

Hnh 2.8 S mch Vng Ring 5- Vng Ring 6: S dng thit Huawei STM16 s dng thit b Ti u H ng s dng thit b OSN3500 cn li s dng thit b OSN2500, Ti u H ng thit b STM4 s dng to thnh vng ni ring STM4 , cc node STM16 gm trm H ng Ph Lm Bnh Ba Th Knh o- Qung B - Vn Sn H ng. Ring STM4 gm: H ng Thanh Oai ng Ho Lu Hong - Ch Chy Ph Xuyn -Thng Tn H ng, ring trm Ch Chy do khong cch t Lu Hong qua Ph Xuyn xa do trm Ch chy ch c chc nng l trm lp khng h lung. Trm Thng Tn cng tng t ch c chc nng lp do khong cch t trm Ph Xuyn v H ng xa do trm khng h lung E1.

Hnh 2.9 S mch Vng Ring 6- Vng Ring 7: S dng thit b Huawei STM16 s dng thit b Ti u H ng s dng thit b OSN3500 cn li s dng thit b OSN2500 cc node trm H ng -Thanh Thu-Vn im- Cu Gi - Ch Chy H ng .

Hnh 2.10 S mch Vng Ring 7- Vng Ring 8: S dng thit b Fujitsu c dung lng STM4 cc node trm s dng thit b FLX 150/600 ring trm Sn Ty s dng thit b FLX 600 Sn Ty Ba V - Vn Thng Sn - Tn Lnh Xun Khanh Sn Lc Sn Ty.

Hnh 2.11 S mch Vng Ring 8- Vng Ring 9: S dng thit b Huawei c dung lng STM16 cc node trm s dng thit b Huawei OSN3500 ti cc u H ng - Thng Tn Ph Xuyn H ng, cc node ADM khc s dng thit b OSN500 s dng STM1 cho cc trm VMS nh Tn Minh, Chng Dng, ChuynM, i Thng, Vn Kim, Phc Lm.

Hnh 2.12 S mch Vng Ring 9- Vng Ring 10: S dng thit b Metro 1000 c dung lng STM1 Thng Tn- Qun Gnh- Khnh H - Tin Phong-Vn La-Ninh S-Thng Tn. Cc thit b c s dng trn cng mt si cp quang.

Hnh 2.13 S mch Vng Ring 102.4.Thit b TTQ SDH FLX150/6002.4.1 Tng quan v h thng SDH:L thit b truyn dn quang SDH ca Fujitsu. Hot ng tc STM-1 v STM-4 STM-1: 155.52Mb/s STM-4: 622.08Mb/s2.4.2 Thit b FLX150/600- L mt khung my n,mt khung my FLX-LS cung cp tt c cc loi hnh thit b cho 2 loi STM-1 v STM-4.- Thit b FLX-LS chy tc : STM-1: 155Mb/s STM-4: 622Mb/s S h thng truyn dn quang FLX150/600

Hnh 2.14 S h thng FLX150/600Cc khi trong h thng gm 4 phn.+Phn giao din trm+ Nhm chung+ Giao din tng hp+ Nhm giao din nhnh Phn chungy l phn m tt c cc cu hnh thit b u c. Trn gi FLX-LS, phn ny gm cc Card sau: SACL, NML, MPL, TSCL(1), TSCL(2), PWRL(1), PWRL(2). Phn giao din tng hpPhn giao din tng hp l phn giao din quang gm 4 khe trn gi FLX-LS, 4 khe ny c nh s nh sau: CH1-1, CH1-2 (nhm 1), CH2-1, CH2-2 (nhm 2). Cc khe ny s dng cho cc lung tn hiu 139,264 Mbit/s, STM-1, STM-4.Cc thit b ADM trong mng chui, (nhm 1), ( nhm 2) c s dng cho cu hnh d phng 1+1 nu c hai khe ca mt nhm u c Card, nu mi nhm c mt khe c Card th khng c chc nng d phng 1+1.Cc thit b ADM trong mng vng s dng hai khe: CH1-2 v CH2-2 hoc CH1-1 v CH2-1. Cc khe CH2-1 v CH2-2 cng c th s dng lp cu hnh d phng cho giao din nhnh. Phn giao din nhnhPhn giao din nhnh c su khe trn FLX-LS: CH3, CH4 (nhm 3), CH5, CH6 (nhm 5), CH7 v CH8 (nhm 7). Nhng khe ny s dng cho giao din 2,048 Mbit/s; 34,368 Mbit/s; 139,264 Mbit/s v giao din STM-1.i vi giao din 34,368 Mbit/s; 139,264 Mbit/s v STM-1 th nhm 3 v nhm 5 c s dng cho cu hnh d phng 1+1 hoc nh mt giao din c lp. Nhm 7 s dng cho cu hnh 1+1.i vi giao din 2,048 Mbit/s, khe s 4 n khe s 8 c s dng theo cu hnh d phng 1:3 hoc khng d phng. S lung 2,048 Mbit/s c th t 63 lung.2.5 Thit b truyn dn SDH FLX600AThit b FLX 600A l mt thit b linh ng c th cu hnh vi nhiu ng dng khc nhau. Thit b ny c th s dng nh mt trung tm hoc h thng ni cho s (DXC) v mt thit b l tng thit lp mng tin tin vng, tuyn v im n im.- Mng FLX c th iu hnh hu hiu bng cch dng h thng qun l mng FLEXR plus hoc FLEXR. C th iu khin t xa qua ng X.25 hoc LCN hoc ni trc tip ni ht.

Hnh 2.15 S h thng FLX600A Thit b FLX600A bao gm cc tm chc nng:1. Tm Ngun: PWM-22. Tm gim st, Cnh bo, iu khin: SAM3. Tm qun l mng: NMM-3/D4. Tm vi x l: MPM-3/D5. Tm kt ni cho, ng b: TSM-16. Tm x l con tr: PTM-17. Tm iu khin chuyn mch: SCM8. Tm qun l knh s liu ECC/DCC:ECM9. Tm giao tip PDH 2MBIT/S: CHM-D1210. Tm giao tip PDH 34MBIT/S: CHM-D311. Tm chuyn mch tc thp: CSM-D112. Tm giao tip STM-1 in: CHM-1E13. Tm giao tip STM-1 quang: CHM-1W114. Tm giao tip STM-4 quang: CHM-415. V tr cc tm trong mt s cu hnh ng dng2.5.1 Ch iu khin:- iu khin Non-blocking Compact 4-3-1 Cross-connect (DXC)- iu khin 5TM-1 /5TM-4 Optional Hub-Muldex (VC-12 Grooming)- iu khin 5TM-4 Add-Drop/Terminal Muldex (ADM/TRM)- iu khin 5TM-16 Add-Drop/Terminal Muldex (ADM/TRM)2.5.2 Bo v ng truyn:- Bo v cc n v a hp (M5P)- Bo v cc kt ni trong mng con (5NC)2.5.3 Cc mc lin kt cho:- VC-12, VC-3, VC-4- 16x5TM-1 Dung lng tng ng (1,008xVC-12)2.5.4 Cc cng giao tip:- Aggregate 2x5TM-4 (5-41, L-41 , L-42) hoc 2x5TM-16 (L-161, L-162)- Tributary 126x2.048 Mbit/s and 6x34368 Mbit/s, hoc 6x44 736 Mbit/s hoc 2x139.264 Mbit/s hoc 2x5TM-1 (electrical, 5-11, L-11 , L-12) - Extra 1x5TM-1 (5-11, L-11, L-1.2) hoc 1x5TM-4 (5-4.1, L-41, L-42)- 16x5TM-1 Dung lng tng ng2.5.5 Giao tip ng b:- 2,048 kbit/s/2,048 kHz to ITU- T G 7032.5.6 Qun l mng:- Ti phn mm t cc my ni b hoc NM5- Giao tip ni b V24- Giao tip NM5 X.25/LCN- Thit b lu2.6 .Thit b TTQ SDH ALCATEL 1660SMC2.6.1 Gii thiu chungAlcatel 1660SM l mt thit b truyn ti ng b a dch v ( OMSN ) tng thch vi tiu chun thit b SDH c nh ngha trong ITU-T G707. 1660SM l thit b NGN SDH nn ngoi vic truyn ti cc tc SDH t STM 1 STM 64, cn truyn ti Ethernet quan cc giao din ISA card ( ISA ATM, ISA ethernet, ISA Gigabiet ethernet) trn nn SDH. Khi 1660SM dng cu hnh ADM th cc port Quang c th dng chung cho cc cu hnh STM1, STM4, STM16, STM64 ( h tr nhiu vng ring trn mt Node ). i vi cc giao din in ( 2,048Mbps, 34Mbps, 155Mbps ) h tr cc cu hnh bo v l 1+1, 1+N vi 1 N 15. i vi cu hnh bo v cho mng l : MSP, SNCP, MSSPRINg.i vi mt thit b SDH th vn quan trng nht l ng b h thng. 1660SM h tr vic tham chiu cc ngun ng b v to dao ng ni thng qua card MATRIX. Cc ngun ng b c th l 2MHz, 2Mbps, hay bt c cc port 2Mbps v port STM-N trn h thng.

Hnh 2.16: Cc lu lng truyn ti

Hnh 2.17: Cu hnh mng SDH2.6.2 Cc cu hnh thit b v ng dng mng ca h thng

Cu hnh TM ( Terminal multiplexer )

Hnh 2.18: Cu hnh TM i vi cu hnh ny, n c dng cho ng dng truyn im ti im ( point to point) Cu hnh ADM ( Add/Drop Multiplexer )

Hnh 2.19: Cu hnh ADM

i vi cu hnh trn, NE dng cho ng dng Ring cng nh Linear.

Cu hnh HUB-STM N

Hnh 2.20: Cu hnh HUB-STM N Vi cu hnh trn, ng dng cho mng MESHED, HUB.

Ngoi ra, tu vo vic s dng m 1660SM c th dng chung cc cu hnh trn mt thit b.

Ta c bng tng kt cho vic bo v i vi tng loi cu hnh mng nh sau:

2.6.3 Cc thnh phn ca mt h thng 1660SM Access Card: Bao gm cc bo mch cho giao tip vt l v cc connector ( giao gin access in cho 2,048Mb, 34Mb, 45Mb, 155Mb) Port Card: Cc port thc hin chc nng ghp SDH trn h thng Module ( module in v quang ):

Hnh 2.21: Cc thnh phn c bn 1660SMC

2.6.4 Gii thiu cc card chnh trn h thng:a. Cc card chnh trn h thng:

SttPort CardSlotChc nng

1P63E124,27,30,32,33,36,39Cung cp 62 port 2Mbs

2P3E3T324,27,30,32,33,36,39Cung cp 3 port 34Mbs

3P4ES1N24 39Cung cp 4xSTM1 quang

3P4S1N24 39Cung cp 4xSTM1 quang hoc in

4S4.1N24 39Cung cp giao din 1xSTM4, 1310nm,