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TONG AI EWSD

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MUC LUC

Muc luc .....................................................................................................................3Phan I Tong ai EWSD ............................................................................................4Chng I Gii thieu ve tong ai EWSD..................................................................5

I. Gii thieu ve cau truc tong ai EWSD .............................................................5II. Nhng the loai va ng dung cua tong EWSD..................................................6

Chng II He thong phan cng cua tong ai EWSD................................................8I. Tong quat ve phan cng EWSD .......................................................................8II. n v ng day so (DLU)..........................................................................11III. Line Trunk Group (LTG).............................................................................15IV. He thong chuyen mach SN ..........................................................................18V. Bo ieu khien mang bao hieu kenh chung (CCNC)......................................23

Chng III He thong phan mem cua tong ai EWSD...........................................25I. Phan mem kieu lp.........................................................................................25II. Phan bo cac phan mem .................................................................................25

III. He thong cac chng trnh ng dung............................................................26IV. He ieu hanh ...............................................................................................26V. Phan mem ngi dung ..................................................................................28

Chng IV Qua trnh thiet lap cuoc goi ................................................................29I. Thiet lap cuoc goi gia thue bao A va A-LTG ...............................................29II. Cong viec anh gia ni CP............................................................................31III. Thiet lap ng noi gia B-LTG va thue bao B...........................................32

Chng V Mot so dch vu cua tong ai.................................................................34

Phan II Thiet b viba RMD1504 .............................................................................40I. May phat ........................................................................................................41II. May thu.........................................................................................................43

Phan III Thiet b truyen dan quang SMA1K...........................................................45I. Tong quan ......................................................................................................46II. Cau truc phan cng .......................................................................................48III. Phan mem....................................................................................................48

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PHAN I

TONG AI EWSD

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CHNG 1GII THIEU VE TONG AI EWSD

I. Gii thieu ve cau truc tong ai EWSDEWSD (Digital Electronic Switching System) la he thong chuyen mach

dung trong mang ien thoai cong cong vi tnh nang a dang va phong phu, heEWSD c thiet ke tren c s hoan toan so, vi kha nang ap ng nhng tnhnang va dch vu hien tai va trong tng lai, pham chat truyen dan cao.

Cau hnh chung cua tong ai EWSD c thiet ke gom nhng phan sau: Thiet ke theo kieu modules.

Phan mem bao gom he ieu hanh va phan mem ngi dung. n v vat ly: gom nhng mach in va he au day. Phan cng: gom nhng phan he oc lap.

Hnh 1-1: Cau tao tong ai so EWSDu iem cua thiet ke theo moun bao gom:

Bao ve an toan va hieu qua. Tng thch de vi cac mang ien thoai khac trong khu vc. Tng thch vi oi mi trong tng lai ma khong phai au t qua ton

kem. Lap at va bao tr n gian. Tnh nang a dang.

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ng dung cua tong ai so EWSD: he chuyen mach so phu hp vi cac yeucau sau:

Kch c cua tong ai.S phong phu cua tnh nang.S a dang cua dch vu.Mang trong khu vc.

II. Nhng the loai va ng dung cua tong ai EWSDHe thong tong ai EWSD, gom cac loai tong ai vi nhng ng dung khac

nhau:

Hnh 1-2: Nhng ng dung c ho tr trong tong ai EWSD Tong ai ien thoai di ong (Mobile Exchange):

oHe EWSD di ong cho phep truyen dan va bao hieu vi pham chatcao.

oThue bao ien thoai di ong co the c goi vao moi luc, moi nidi cung mot so ma. Tong ai noi hat (Local Exchange):

oTong ai noi hat ket noi lu thoai i va en thue bao.oDung lng cua tong ai noi hat co the len en 250.000 so thue bao.

Tong ai qua giang (Tandem Exchange):oTong ai qua giang co the dung nh iem gut trong mang e ket noi

lu thoai i va ve tren trung ke i en ai oi phng.

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oDung lng cua ai qua giang co the len en 60.000 trung ke. Tong ai hon hp (Combined Exchange):

oKet noi ng day thue bao va ng day trung ke.oCho phep chuyen mach cac loai lu thoai mc 25.000 Erlang.

Tong ai noi ra ca ngo quoc te (International Gateway): EWSD cungcap moi chc nang cua mot tong cua ngo quoc te, nh la:

oHe bao hieu quoc te.oBu tieng doi tren ng day truyen quoc te.oNoi en ve tinh.oKhi can, nhng tnh nang ke tren cung co the tm thay ni tong ai

qua giang trong nc.

Tong ai nong thon va container (Rural/ Container Exchange):oc dung nhng vung xa vi mat o dan so thap.oCo chung phan cng va phan mem nh tong ai noi hat.oDung lng toi a 7500 so.oLa he thong hoan chnh vi nguon va may ieu hoa khong kh, co the

lap at trong container vi dung lng toi a 6000 thue bao. He dch vu qua ien thoai vien (Operator Service System):

oDung khi can ien thoai vien ket noi ien am.oHoac ni nhng dch vu ac biet can en ien thoai vien.

Dch vu gia tr gia tang (VAS): e truy nhap c s d lieu, x ly va lutr so lieu, ngi ta co the s dung mang chuyen mach cong cong. VAS cs dung v nh muon a may Teletext vao hoat ong trong mang Teletext. ieu hanh va bao dng tap trung (Central Operation & Maintenance)

: Co the ieu hanh va bao dng tong ai EWSD tai cho hoac t trung tamOMC xa. T mot trung tam OMC, ngi ta co the lam cong tac ieu hanhva bao dng cho nhieu tong ai khac nhau. a dch vu(ISDN): EWSD c thiet ke e ap ng vi moi yeu cau

khi a dch vu ISDN vao s dung . nh truyen dan tieng noi, van ban hoac so

lieu qua mang ISDN, cuoc goi ch i He bao hieu kenh chung so 7: He bao hieu kenh chung so 7, c

CCITT quy nh, cho phep cac tong ai trao oi tin tc vi nhau qua cung motkenh chung. He bao hieu nay c s dung rong rai tren mang so toan cau,gom cac iem ieu khien dch vu SPC ( Service control point). n v DLU(n v ng day so): n v ng day so (DLU), co the

c s dung cho ca thue bao analog va thue bao so. n v nay tap trung luthoai cua ng day thue bao. DLU co the lap at ngay trong tong ai, hoactai a iem xa ai.

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CHNG 2

HE THONG PHAN CNG CUA

TONG AI EWSDI. Tong quat ve phan cng EWSD:

Phan cng cua he thong EWSD c to chc thanh nhng phan rieng biet.Nhng phan nay c noi vi nhau bang nhng giao tiep ong nhat.

Hnh 2-1: S o khoi phan cng cua tong ai EWSDNhng thanh phan cua EWSD :

on v DLU gom nhng ng day thue bao analog va digital. DLUc noi en LTG (Line/ Trunk Group: nhom ng day va trung ke).

oLTG th noi en cac tong ai khac, ban ien thoai vien (DSB).oMach chuyen mang SN co nhiem vu ket noi hai ng day thue bao.oBo CCNC cho phep EWSD x ly bao hieu so 7. He bao hieu so 7 cho

phep tong ai trao oi tin tc vi nhau qua mot kenh bao hieu chung. Tin tctrao oi co the la: bao hieu trong tien trnh x ly cuoc goi, so lieu ve thue bao(v du: thue bao, so lieu cua dch vu chuyen cuoc goi), va tin tc ve trang thailam viec cua kenh bao hieu.

Trong he tong ai EWSD, cong viec x ly c phan bo eu cho so ln cacbo vi x ly. Phoi hp toan bo cac bo x ly nay la nhiem vu cua CP.

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Thanh phan cua CP gom: Bo x ly phoi hp CP, bo nh ngoai EM, thiet bvan hanh va bao dng OMT, bang SYP, bo em thong tin MB, bo phat xung

ong bo trung tam CCG.Viec chia tai trong EWSD: e chia xe bt cong viec x ly cua CP,

va cung e rut thi gian x ly, cong viec c phan phoi en cac bo ieukhien oc lap. Trong EWSD, nhng phan he thc thi nhiem vu, trong lnh vctrach nhiem cua mnh, mot cach oc lap, nen nhng phan he nay can en boieu khien rieng biet nh DLUC trong DLU, GP trong LTG, CCNP trongCCNC, SGC trong SN, SYPC trong SYP, MBC trong MB.Nhng giao tiep trong EWSD: Nhng giao tiep trong EWSD co the

phan ra lam hai loai giao tiep ben ngoai va giao tiep ben trong.

Hnh 2-2: Nhng giao tiep cua he EWSD Giao tiep ben ngoai he EWSD

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Hnh 2-3: Giao tiep ben ngoai cua EWSD Giao tiep ben trong he EWSD:

Hnh 2-4: Giao tiep ben trong EWSD

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ng day PDC 2Mbps noi DLU en LTG, ng PDC 2Mbps co the tainhieu kenh thoai hoac so lieu tren cung mot ng day noi. Tren ng day noi

toc o 2048 kbps. Moi ng PDC co the tai 32 kenh, van toc truyen moi kenhla 64 Kbps.ng SDC 8Mpbs noi gia LTG va SN, SDC con c goi la ng day

th cap, co van toc truyen 8Mbps. SDC co the tai toi a 128 kenh vi van toctruyen moi kenh la 64 kbps.

CCNC c noi en SN cung bang SDC. Con ket noi t CCNC en CPth dung giao tiep Bit song song.

CP truyen so lieu en tng LTG bang ng xuyen qua mang SN.II. n v ng day so (DLU)

DLU co nhiem vu noi en ng day thue bao va tap trung lu thoaing day thue bao. Va noi en cac tong ai noi bo PBX, ng truy cap cban ISDN.

Ket noi gia DLU va LTG :Mot DLU co the noi en LTG bang 2,3 hoac 4 ng truyen PDC.

DLU co the au thang, au cheo, hoac au bat ky en LTG. e am bao antoan DLU thng au cheo en LTG.

Hnh 2-5: Ket noi gia DLU va LTGCach au cheo co rat nhieu u iem hn so vi cac cach au khac. Khi

co mot LTG h th DLU van lien lac vi ai chnh bang LTG con lai.

Hnh 2-6: Cach au cheo trong DLU

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DLU la mot thanh vien cua he thong, DLU co the lap at trong ai(ai me) hoac xa ai (ai ve tinh).

Chc nang cua DLU:DLU co bon chc nang chnh:1. Tap trung lu loai cua ng day thue bao: La do 4 ng PDC ket

noi gia DLU va LTG ch cho phep 120 thue bao trong DLU va LTG noichuyen vi nhau trong cung mot luc. Vay vi tong ai so toi a 944 thue baotrong mot DLU th t le tap trung la 8:1.

2.Bien oi tn hieu tren ng day thue bao: T dang analog sangdigital, bi v dang tn hieu t au ra cua DLU tren ng PDC la dang so.Viec bien oi ke tren c thc hien trong DLU.

3. Thch nghi c moi hnh thc lu thoai: Do c cau cua DLU co them rong theo n v moun: hoac la 2 ng PDC(60 kenh thoai), hoac la 3ng PDC (90 kenh thoai), hoac la 4 ng PDC(120 kenh thoai).

4.a vao de dang dch vu ISDN: Co the a dch vu ISDN vao khuvc ch dung tong ai analog, mot cach de dang bang cach s dung DLU nhmot ai ve tinh. Trong khu vc con s dung tong ai analog, nh co DLU vetinh, noi thang en tong ai EWSD.

Cau hnh he thong :Thanh phan chnh trong DLU:

Hnh 2-7: Cac thanh phan trong DLU Card modules thue bao SLM:

SLMA: e noi en ng day thue bao analog. Moi card SLMA gom8 mach thue bao, ieu khien bi bo x ly SLMCP. Cung cap nguon ien, bao ve

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qua ap, ien rung chuong, bao hieu, ma hoa (analog/digital), hybrid 2 day/4day, o th.

SLMD: e noi en ng thue bao so( ISDN). Gom 8 mach thue bao soSLCD. ieu khien bi bo x ly SLMCP. Card SLMD c thiet ke co chieuday gap 2 lan card SLMA. So thue bao trong tong ai dung SLMD thng t hntong ai dung SLMA.

Hai n v giao tiep so DIUD e noi en ng truyen PDC. Hai n vieu khien DLUC ieu khien tien trnh hoat ong ben trong DLU, phan phoihoac tap trung tn hieu ieu khien gia mach ng day thue bao va DLUC.DLUC tuan t quet do cac SLMCP e nhan ban tin, DLUC con co the gi trctiep lenh va so lieu en tng SLMCP. Hai DLUC lam viec oc lap vi nhau,

theo phng thc chia tai.n v th TU: e th may ien thoai, ng day va ghi lai so lieu.Hai mang 4096 Kbit/s e truyen so lieu thoai va bao hieu gia nhng card

SLM va giao tiep DIUD.Hai mang ieu khien 136 Kbit/s e truyen so lieu ieu khien gia nhng

card SLM va DLUCng truyen PDC noi en LTG (2Mbit/s).

Hnh 2-8: Cau truc cua DLUHai modules DIDU va DLUC lam viec phoi hp vi nhau tao thanh n

v trung tam DLU. Co hai trung tam DLU nham am bao o tin cay mc caonhat.

n v trung tam con co :BD (Bus phan phoi d lieu), BDCG(Bus phanphoi va ong ho trung tam), RGMG(Bo phat chuong va xung tnh cc).

Mang ieu khien: Mang ieu khien c tang oi nay la ng lien lacgia DLUC va bo x ly trong cac card modun. Lien lac vi DLUC0 bang mangieu khien 0 con lien lac vi DLUC1 bang mang 1.Hai mang tren truyen tin tcieu khien ca hai chieu:

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Lenh gi t DLUC en SLMCP.Ban tin va bao hieu gi t SLMCP en DLUC.Van toc truyen bit hai chieu la 136Kbit/s.ng truyen tieng noi va so lieu mang thoai nay c tang oi .Moi

mang 4096 Kbit/s nh tren cung cap 64 kenh van toc truyen 64Kb/s ca haichieu. Nhng ch co 120 kenh thoai c dung so con lai dung vao viec thhoac truyen cac loai am hieu phuc vu cuoc goi trong trng hp khan cap.

ng truyen PDC :Co toi a 4 ng PDC noi DLU vi hai LTG. Motng PDC co 32 kenh e phat va thu tin tc. Kenh 1-15 va 17-31 truyen thoaiva so lieu, kenh 0 e ong bo khung, kenh 16 e truyen bao hieu.

ng day thue bao:Mach thue bao analog (SLMA) va mach thue bao so

(SLMD) truyen tin tc tren oi day ong. oi day nay con e cap nguon vaien chuong.Dch vu khan cap:

Dch vu khan cap khi DLU b mat ng truyen PDC, the nhng thue baotrong DLU nay van con lien lac c vi nhau. Trong luc khan cap, viec ket noicuoc goi la do s phoi hp gia n v EMSP va moun phan mem ac biet.

EMSP:Luc thng viec nhan va phan tch so quay cua may ien thoai anphm c tien hanh tai LTG .EMSP (Modun phuc vu cho thue bao dung mayien thoai an phm trong trng hp khan cap) se am nhiem hai viec tren khi

xay ra tnh huong khan cap.Tien trnh cuoc goi trong dch vu khan cap : Thoat tien SLM cua thuebao A phat hien co thue bao nhac may, DIUD gi am hieu quay so. EMSP, sauo nhan va giai ma so quay, so lieu c gi ve cho DLUC. DLUC ieu khienDIUD gi hoi am chuong cho thue bao A, con SLM cua thue bao B gi dongien chuong. Khi thue bao B nhac may tra li, ien chuong va hoi am b ngat,ng ket noi gia hai thue bao luc nay c quyet nh bi DLUC. Trongtrng hp nay so lieu tnh cc se khong c ghi lai.

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Hnh 2-9: Trang thai DLU trong trng hp khan cap

III. Line Trunk Group (LTG)LTG la giao tiep gia SN va mang khu vc, gom cac tong ai analog va

digital.Nhiem vu cua LTG :( X ly cuoc goi)oNhan va giai ma tin tc nhan c tren ng trung ke va ng day

thue bao.oGi bao hieu va cac loai am hieu.oTng hp vi van toc truyen 8 Mbps cua SN. Chc nang t bao ve cua LTG: (Phat hieu loi trong LTG)oPhat hien loi cua nhng giao tiep ben trong ai, trong qua trnh x ly

cuoc goi.oanh gia nhng sai hong noi tren, va khi s tien trnh thch hp: khoa

mach, khoa LTG. Chc nang van hanh cua LTG:oGi bao cao ve so o lu thoai ve cho CP.oTien hanh th ng ket noi.oBao cho biet trang thai van hanh cua tng moun rieng le nh s ch

th bang en LED.oGhi so lieu ve cc.oMoi LTG thng c noi en hai SN cung v ly do an toan. Neu gia s

ng noi gia LTG va SN t oan, hoac co khi mot trong hai SN h th tientrnh x ly van c tiep tuc.

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LTG c thiet ke vi nhng chung loai khac nhau, nham ap ng motcach tot nhat, cac yeu cau: ve dang thc truyen dan khac nhau (PCM 30, PCM

24, ng truy nhap so) va cac he bao hieu: MFC/R2, bao hieu xung ma.CCITT so 7).Co the ke ra cac loai LTG: A, B, C, G, D.LTGB: nhng n v sau ay co the noi en LTGB qua ng PDC

(PCM30/PCM24): DLU. Tong ai khac (vi ng PCM 24). Tong ai noi bo PABX ISDN c trung va c ln.

Hnh 2-10: TLG BMot LTG co the giao tiep vi 60 ban ien thoai vien bang ng truyen

so. Bo ieu khien GP co nhiem vu phoi hp nhng hoat ong trong LTGB, trongLTGB con co:

Toi a 8 LTU. n v bao hieu SU. Bo ghep kenh thoai SPMX hoac bo chuyen mach nhom GS. Bo LIU e giao tiep gia LTGB va SN.

LTU co the noi en: DLU. DSB. Va nhng tong ai khac.

Tuy theo yeu cau, LTU c trang b nhng loai card khac nhau (DIU egiao tiep hoac la vi DLU, hoac vi cac tong ai khac, card OLMD e giao tiepvi DSB).

Bo SU gom cac bo nhan so e anh gia so ma nhan c.SU con co bo phan phat am hieu, e: Phat hien am. Phat tan so dung trong bao hieu MFC.

SPMX la tang chuyen mach thi gian, giong nh tang chuyen mach thigian trong SN. SPMX c dung neu LTGB giao tiep vi ng trung ke.

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Hnh 2-11: S o ben trong LTGB

Bo chuyen mach GS c dung khi LTGB giao tiep vi ng day thuebao. Bo GS con cho phep tnh nang hoi thoai. n v giao tiep LIU la giao tiepgia LTGB va mang chuyen mach SN.

LTU co nhiem vu:Chuyen mach va cac kenh truyen en 2 mang: SN0 va SN1.Tiep nhan va chuyen so lieu t mot trong hai mang SN.Chuyen lenh t CP en GP.Chuyen ban tin gi t GP en CP.

Trong ng truyen t LTG en SN, khe thi gian 0 c dung e truyentai ban tin.

GP la bo ieu khien oc lap phan ngoai vi.GP co nhiem vu:ieu khien moi n v chc nang trong LTGB.Trao oi so lieu vi bo x ly CP va nhng LTG khac.T tm loi va bao an.

LTGC:khac vi LTGB, LTGC ch co nhiem vu giao tiep vi tong aikhac. Trong LTGC n v DLU ch noi en trung ke lien ai. LTGC co nhiemvu cap am va tn hieu a tan gi en tong ai khac, the nen n v SU ctrang b bo phat am hieu. Trong SU con co CR e thu nhan ma a tan MFC.

LTGC khong dung en GS, v khong ket noi hoi thoai, ma ch dungGPMX, LTU co chc nang tng t nh trong LTGB , la giao tiep mang SN vaLTG. GP trong cac loai LTG ve c ban la eu giong nhau.

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LTGG: no am nhiem moi chc nang cua cua LTG no co the c dungthay the cho LTGB hoac LTGC. Va dung noi en:

DLU ve tinh va DLU trong ai bang toi a 4 ng trung ke so PDC.Tong ai PABX ISDN bang 4 ng truyen s cap PA. Mot LTGG

ket noi c vi DLU va PA.Toi a bon ng PCM30, 5 ng PCM24.Co the noi toi a 40 bang ien thoai vien (DSB).

LTGG gom cac n v chc nang: Toi a 5 n v LTU e noi en trung ke. Bo chuyen mach nhom va giao tiep vi SN (GLS). Bo x ly nhom (GP). n v bao hieu.LTGD: cung c dung noi en trung ai. No co kha nang x ly bao

hieu quoc te, co gan them bo loc tieng doi ac biet dung trong ien am xuyenluc a qua ng ve hoac ng cap bien. Ngoai ra no con co bo SDMA ghep4 ng 2 Mbit/s thanh mot ng 8 Mbit/s e noi en SN. No am nhan tat cacac nhiem vu trong LTGB, LTGC.

IV. He thong chuyen mach SNSN: la phan he trong phan cng, co nhiem vu thiet lap cuoc goi gia hai

thue bao.V ly do an toan, SN thng c trang b hai n v. Giao tiep cua SN vi

ben ngoai eu la ng truyen SDC.

Hnh 2-12: Giao tiep vi SN

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Giao tiep vi cac loai SN gom: SDC: LTG noi en LTG bang ng truyen 8 Mbit/s. SDC: CCNC noi en bo ieu khien mang bao hieu kenh chung (kenh

so 7). SDC: TSG noi en CP, e trao oi d lieu vi LTG. SDC: SGC noi en CP e trao oi tin tc vi bo ieu khien SGC.

SN gom cac moun ong nhat, cho phep m rong de dang, tng thch vitong ai u moi kch c, chung loai:

SN: 15 LTG la loai SN nho nhat dung lng 7500 thue bao.SN: 63 LTG cho 30000 thue bao.SN: 126 LTG cho 60000 thue bao.SN: 252 LTG cho 125000 thue bao.SN: 503 LTG cho 250000 thue bao.

Hnh 2-13: Mang chuyen mach 63 LTGTrong SN: 63 LTG, MB va 63 LTG, moi n v noi en mot trong 16 tang

TSM bang 128 kenh thi gian.Tang thi gian gom: Tang thi gian vao TSI. Tang thi gian ra TSO. Tang thi gian chuyen mach ma t 8 bit en tng khe thi gian va en

tng ng ghep kenh.

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Mang SN trong EWSD la mang thong thoai hoan toan. T moi tangTSM co the en bat ky tang SSM nao va ngc lai.

Tang SS chuyen mach ma t 8 bit gia cac ng ghep kenh. Thenhng khe thi gian van khong oi.T tang khong gian, so lieu c gi tr ve tang thi gian.

4.1. Cac loai SNSN: 15 LTGMang SN nho nhat la mang 15 LTG gom cac moun:oMoun tang thi gian TSN.oMoun tang khong gian SSM, gom 16 kenh vao va 16 kenh ra.oBo ieu khien SGCI vi giao tiep en MB.oMoun giao tiep vi ng truyen( LIL): giao tiep gia SN va LTG,

cung nh giao tiep gia SN va MBU.SN: 63 LTGSN: 63 LTG gom cac moun sau:Moun tang thi gian.Moun tang khong gian(SGCI), trong SN 15 LTG, SGC khong co giao

tiep thang vi MB.LIL la n v giao tiep gia SN va LTG, cung nh gia SN va MB.LIM la moun giao tiep gia SN va MB, e truyen lenh gi t CP en

SN.SN: 126 LTG la s m rong cua SN 63 LTG. Them cac modules LIS giao

tiep ng noi trong mang chuyen mach noi bo gia TSG va SSG, va SSMB/15nhom SSG vi 8 ng vao/ 15 ng ra hoac ngc lai.

4.2. Ket noi ban thng trcTrong SN, ket noi bang chuyen mach ban thng trc c hnh thanh khi

khi ong lai t au he thong hoac khi ong sau khi m rong he thong.Co ba loai ket noi ban thng trc: Loai ket noi e truyen tin tc trao oi t CP en LTG va t LTG ve CP.

ay la loai noi khong the thieu. No c hnh thanh khi nap lai t au chngtrnh ng dung APS. Tren ng ghep kenh gia LTG va SN, th TSO cdung e truyen tai ban tin gia LTG va CP.

Loai kenh chung truyen bao hieu: loai ket noi ban thng trc co thchien bang lenh MML. Bao hieu cua moi kenh thoai c truyen tren mot kenhchung. Bao hieu gia LTG va CCNC c truyen qua kenh noi ban thng trctrong SN.

Loai kenh dch vu.

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Ngoai ra con co ket noi d phong dung khi ket noi ang hoat ong gap s co.4.3. Van e ieu phoi

He thong EWSD bao gom nhng phan he co tnh oc lap cao, moi phanhe eu co rieng bo ieu khien vi x ly. Bo vi x ly CP co nhiem vu ieu phoihoat ong cua cac bo vi x ly ke tren va viec trao oi so lieu gia chung.

Cong viec ieu phoi: ngoai bo x ly ieu phoi CP, bo nh ngoai EM vathiet b van hanh bao dng OMT th phan he ieu phoi con co nhng n vchc nang sau: bang pannel (SYP) vi bo ieu khien (SYPC), bo em ban tinMB vi bo ieu khien vi x ly MBC, bo phat xung ong ho trung tam CCG, bophat xung ong ho GCG co nhiem vu phat xung ong ho e gi qua mang SNva gi ve cac n v chc nang trong MBG. GCG c ong bo vi xung chuan

trong bo phat xung ong ho trung tam CCG.Bo iem ban tin (MB) c dung nh bo giao tiep tng hp. em lenh t CP gi en e chuyen cho SN/LTG. em ban tin gi t SN va LTG e chuyen ve CP. Gom toi a 4 MBG tang oi. Co nhiem vu ong bo nhng bo phat xung ong ho ni nhng thiet b

x ly cuoc goi ngoai vi (theo nguyen ly c cau mang).Bo giao tiep tng hp co nhiem vu bien oi tn hieu gi en MBU cho

phu hp vi quy cach dung cho be bus cua CP. Bo giao tiep tng hp MBU:SGC co dung chc nang ca hai loai MBU cu va mi. Bo phat xung ong ho trung tam (CCG)ong bo tong ai EWSD qua mang so.Tiep nhan xung chuan gi t Tong ai khac (theo nguyen ly c cau

mang).c tang oi e am bao an toan.

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Hnh 2-14: Xung ong ho trong CCG

Viec g xay ra neu tat ca cac bo phat sinh ong ho trong tong ai hong,luc nay tat ca eu ngng tre. Ngi ta khong the van hanh tong ai t OMC,khong chuyen mach c ng thoai, khong ghi so lieu ve cc, khong co amhieu va cung khong phan tch c so quay. Do o CCG c trang b hai cai.Mot CCG lam viec theo phng thc chu t, khi chu b hong th t c thayvao th nguon xung ong ho van lien tuc.

Bo SYP Hien th canh bao va trang thai cua he thong EWSD. Hien th nhng ban tin t ben ngoai. Gom bo ieu khien SYPC va toi a 8 bang en SYPD.

4.4. Bo x ly phoi hp CPTrong he EWSD, moi n v eu co bo ieu khien rieng. Nh vao nang lc

chia tai, ma EWSD la he thong manh va linh hoat. Ma n v ieu khien moitien trnh chung cua he thong o chnh la CP, no phoi hp cac tien trnh x lytrong ieu hanh, bao an va chuyen mach. Bo x ly ieu phoi co nhiem vu:

X ly cuoc goi nh la dch vu so e chon ng va xac nh cung cc.ieu hanh va bao dng nh khai bao va xoa ng day thue bao.Bao an nh tm loi, xac nh cho h va sa cha.

T khi EWSD c a vao s dung, a co 3 loai CP c dung:

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BHCA la so lan goi vao gi cao iem, ch ra so lan chuyen mach trong mot

gi, vao gi cao iem. Loai n v nay thng c dung e o kha nang cua hechuyen mach ien t.

Nhng bo x ly ieu co hai bo x ly giong nhau, lam viec song hanh e ambao an toan cho he thong.

Bo x ly ieu phoi CP113: ieu khien chc nang x ly cuoc goi, van hanh va bao an. La bo a x ly, co toi a 16 bo x ly vi cau hnh giong nhau. Bo x

ly CAP va BAP co nhiem vu x ly, BAPM phu trach moi viec, va IOC quan lyviec trao oi ban tin gia CMY va IOP.

Khong dung CAP trong cau hnh toi thieu. Co bo nh rieng, e co the truy cap c nhanh, va ca bo nh chung. Co the truy nhap nhieu thiet b x ly va van hanh ngoai vi nh nhng

IOP khac nhau. Co cac bo vi x ly c tang oi (ma ket qua thng xuyen em ra so

sanh). Co nang lc x ly en hn mot trieu BHCA.

V. Bo ieu khien mang bao hieu kenh chung (CCNC)CCNC co trach nhiem gi ban tin qua kenh bao hieu chung, noi gia cac

tong ai, dung he bao hieu kenh chung so 7 (CCS7). Trong he thong EWSDdung he bao hieu kenh chung SSC7 la he bao hieu c CCITT chon s dungnham tao thuan li khi truyen bao hieu, gia nhng tong ai cua nhng hang

khac nhau, tren kenh chung. He bao hieu nay i kem vi chng trnh may tnhlu tr trong ieu khien SPC, ni mang so toan cau. Bao hieu gia cac tong aigoi tat la CO: cac loai bao hieu sau ay c dung gia cac tong ai:

CAS: bao hieu lien kenh, bao hieu c truyen ca trong kenh thoai lantrong mot kenh ac biet, c dung lam kenh bao hieu. Trong he PCM, th kenhth 16 cua mot khung, tai bao hieu cho 2 kenh thoai.

Bao hieu kenh chung CCS, bao hieu het thay kenh thoai, c truyentren kenh chung goi la kenh bao hieu chung. CCS co the la bat ky mot kenh nao

Loai Nam s dung Dung lng a x lyCP 103 1981 220000 BHCA KhongCP 112 1983 60000 BHCA KhongCP 113 1988 1000000

BHCACo

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cua he PCM. Tuy nhien v ly do an toan, ngi ta d tru them mot kenh truyenbao hieu na trong he PCM khac.

Ly do e dung bao hieu kenh chung: Co them dch vu mi ISDN. o tin cay cao. Linh hoat vi ng dung trong tng lai.Van toc truyen cao 64 kbps, cho phep thiet lap nhanh cuoc goi. ng truyen so lieu oc lap vi ng truyen thoai.

n v chc nang cua CCNC c chia thanh 3 khoiKhoi 1: gom 2 bo ghep kenh chu( MUXM), moi bo noi en mot SN ( SN 0

hoac SN1).

Khoi 2: gom toi a 32 nhom au cuoi cua bao hieu( SILTG), moi SILTGphu trach 8 kenh bao hieu.

Hnh 2.15: cac khoi chc nang cua CCNCKhoi 3: gom hai bo x ly bao hieu mang bao hieu kenh chung( CCNP).Kenh chung bao hieu thoat tien bao ham trong luong PDC. Sau o, t LTG,

kenh bao hieu c lai en bo MUXM, thong qua mang chuyen mach SN.MUXM co nhiem vu chuyen luong bao hieu en tng SILTG hoac ngc laiCCNC co the quan ly en 254 kenh bao chung. Nhiem vu chnh cua SILTG laam bao an toan cho viec truyen dan bao hieu nh nghi thc HDLC, cung nhthu, phat ban tin di dang thc bao hieu so 7.

Ngoai ra, nhiem vu cua SILTG la:

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Chiem dung ng bao hieu. Phat hien trang thai lam viec cua ng bao hieu. Lien lac vi CCNP. Phat hien loi truyen dan.

CCNP la bo oc cua CCNC.CCNP co nhiem vu:Bien oi dang tin nhan c sang dang thc noi bo cua EWSD.Phan biet, trong cac ban tin nhan c, cai nao danh cho iem bao hieu

mnh, cai nao cho iem bao hieu khac.Gi ban tin i ung hng.Quan ly mang bao hieu, v du nh biet kenh nao ang b khoa.

CHNG 3

HE THONG PHAN MEM CUA EWSDCau truc phan mem :e co u tnh linh hoat nham ap ng yeu cau thc te cua

tien trnh chuyen mach, cau truc cua phan mem c thiet ketheo moun.

I. Phan mem kieu lpPhan cng luon thay oi theo a phat trien nhanh chong cua cong nghe. Do

o, he ieu hanh cua EWSD c thiet ke sao cho cang t phu thuoc vao phancng cang hay. Con phan mem cho ngi dung th hoan toan oc lap vi phancng.

Hnh 3-1: Cau truc phan mem He ieu hanh co nhiem vu:

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oTo chc, v du nh quan ly bo nh.oBao an, v du nh x ly canh bao.

Phan mem cho ngi dung:Chng trnh x ly cuoc goi, v du nh dch so.Chng trnh quan ly, v du nh khai bao thue bao mi.Chng trnh bao dng, v du nh ieu khien viec th( tm loi).

Ngoai nhng chng trnh nap c, th moi bo x ly trong EWSD eu cochng trnh co nh. S khac biet duy nhat gia chng trnh nap c vachng trnh co nh la: toan bo ma chng trnh va so lieu cua chng trnh conh eu thng tru trong EWSD.

II. Phan bo cac phan memCo hai phan he trong EWSD ch gom co phan mem co nh : MB khong co

nhiem vu phan tch ban tin ma ch phan phoi chung. Do o, logic ieu khien cuaMB c lu tr nh mot chng trnh co nh.

Bo ieu khien SGC: SGC co the lam viec vi ch bang phan mem co nh,v viec chon ng trong SN la do CP quyet nh. Moi phan he, ngoai tr IOP:MB, eu co mot t le phan mem co nh nao o. Mot phan he cang thong minhth t le phan mem co nh cang thap.

Ngoai phan mem co nh th cac phan he CP, IOP: MB, CCNC va LTG conco phan mem khong phu thuoc ngi dung. o chnh la chng trnh bao an va

chng trnh ieu khien tien trnh x ly.e thc hien nhng cong viec phc hp khac, nh quan ly thue bao va so

lieu cua he thong, x ly cuoc goi va bao dng he thong th can en loai chngtrnh khac. o chnh la chng trnh ngi dung trong CP, IOP:MB, GP vaCCNP.

III. He thong cac chng trnh ng dungTong hp nhng phan mem nap c, he ieu hanh, chng trnh cho

ngi dung va c s d lieu( v du nh so lieu ve thue bao) c goi la: Hethong cac chng trnh ng dung( APS).

Cau truc cua phan mem APS nh sau:

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Hnh 3-2: Cau truc APS

Phan mem co nh va he chng trnh APS la hai th khac nhau. Trong

khi chng trnh co nh c cai chet trong EPROM. Th APS c ghi trongbang t.EWSD la he thong lam viec trong thi gian thc. V phan mem cua

EWSD, c ieu khien bang phng thc ngat, nen no co the x ly theo th tuu tien, nhng yeu cau va mi phat sinh. ieu o co ngha la nhng viec comc o khan cap cao, se ngat nhng viec co mc o khan cap thap hn.

IV. He ieu hanhHe ieu hanh dung e lien ket phan mem ngi dung vi phan cng.He ieu hanh trong CP bao gom: chng trnh ieu hanh va chng trnh

bao an.

Hnh 3-3: Phan cap he ieu hanh Chng trnh ieu hanh: Co nhiem vu ieu hanh cac tien trnh gom

phoi hp chuoi cac cong viec, va quan ly tuan t cua cac x ly. Ngoai ra,chng trnh ieu hanh con quan ly ngat, tao bi nhng yeu cau phat sinh.Chng trnh ieu hanh con quan ly thi gian. Nh xac nh so lieu va thi gian,

Software

Chng trnh ngi dung He ieu hanh

Chng trnhbao an

Chng trnhieu hanh

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bat au hay ket thuc mot cong viec nh thi nao o. Nhiem vu quan trong khaccua chng trnh ieu hanh la quan ly xuat nhap en cac thiet b ngoai vi (bang

t, a t). Chng trnh bao an: Nham ngan nga phan ng sai lech trong he

thong EWSD. Nhiem vu au tien cua chng trnh bao an la thiet lap cau hnhchc nang he thong. Gom viec nap phan mem va c s d lieu t bang vao at, e roi sau o, phan phoi nhng tin tc nay t bo nh chung ra toan he thongEWSD. Chng tnh bao an c he ieu hanh s dung vao viec:

Khi phat viec kiem tra nh ky. anh gia nhng ban tin canh bao va bao an. Ghi lai nhng thong tin loi. Va nh v cho h.Khi xay ra hong trong phan cng, th he ieu hanh tai tao cau hnh he

thong ve lai trang thai chc nang. Neu hong la phan mem th he ieu hanhkhi phat tien trnh phuc hoi toan bo. Mc o au tien la RESTART. mcnay nhng thong tin ve loi c ghi lai, nhng ket noi thue bao trong ai connguyen . Neu tien trnh phuc hoi RESTART lap i lap lai, ma van khong ketqua, th xoay qua hoi phuc mc o cao hn. o la mc NEWSTART. mchoi phuc nay moi tien trnh eu cham dt. Nhng ket noi thue bao con d dangeu huy bo. Nhng ket noi hien hu van c d nguyen. Neu ca hai mc phuc

hoi tren van khong em lai ket qua th phai vien ti mc INITIALSTART.Trong INITIALSTART, toan bo he chng trnh APS c nap lai t a. Moiket noi a co, hoac nhng ket noi ang trong tien trnh thiet lap eu huy bo.

V. Phan mem ngi dung

Hnh 3-4: Phan cap phan mem ngi dung

Phan mem ngi dung He ieu hanh

Chng trnhquan ly

Chng trnhx ly cuoc goi

Chng trnhbao dng

Software

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Phan mem ngi dung chu trach nhiem nhng cong viec phc hp, riengle. Phan mem ngi ngi dung chia thanh: chng trnh x ly cuoc goi, chng

trnh quan ly va chng trnh bao dng.5.1. Chng trnh x ly cuoc goi:

La mot phan trong phan mem ngi dung, chng trnh x ly cuoc goi conhieu viec phai lam: trong so o, co viec x ly so lieu trong lien ket noi cuocgoi va so lieu trong c s d lieu. Mot nhiem vu khac cua chng trnh x lycuoc goi la dch so, lap hoa n chi tiet va chon tuyen. Chng trnh x ly cuocgo truy nhap cac bang so lieu nham chon ng trong mang SN va thiet lap ketnoi bang chuyen mach. Ngoai ra no cung co nhiem vu chuyen so lieu t CP enGP, e khi phat tien trnh x ly oc lap cuoc goi trong GP. Tin tc chuyen giao

nay c goi la lenh.5.2. Chng trnh quan ly :

Chng trnh quan ly khong x ly cuoc goi, ma nhiem vu chnh cua no laquan ly lenh MML (ngon ng may MML c he ien thoai vien s dung elien lac vi phan mem EWSD. Vi lenh MML ngi ta co the hien th trang thaicua he thong hoac a vao hoat ong cac thanh phan phan cng mi). Vi lenhMML , chng trnh quan ly cho phep nhap so lieu mi, hoac thay oi so lieutrong c s d lieu. Chng trnh quan ly con co nhiem vu in ra so lieu. Congviec khac cua chng trnh quan ly la:

ieu khien viec lu thoai. Lu tr so lieu ve cc va so lieu o lu thoai. Nhiem vu bao ve qua tai.

5.3. Chng trnh bao dng:Chng trnh bao dng c phat ong bang lenh MML, co nhiem vu

duy tr hoat ong cua he thong. Tien trnh bao dng co the phai truy nhap motso cac chng trnh trong he ieu hanh. Chng trnh bao tr, v du co the khiong:

Viec tm loi trong phan cng. Tien trnh o va th.

Bang lenh MML, co the lam chay chng trnh thay oi cau hnh vachng trnh nap phan mem trong chng trnh bao dng. Chng trnh baodng con co nhiem vu xuat canh bao ra bang en ( SYP).

CHNG 4

QUA TRNH THIET LAP CUOC GOI

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Gia s thue bao A nhac may goi thue bao B, chuoi s kien sau ay se giai thchtac ong qua lai cua nhng phan he rieng le trong qua trnh thiet lap cuoc goi.

I. Thiet lap cuoc goi gia thue bao A va A-LTG

Hnh 4-1:Thue bao A phat tien cuoc goiKhi nhac may thue bao A khi phat tien trnh x ly cuoc goi .Mach ngday thue bao analog (A-SLCA) trong A-DLU nhan ra ieu kien nhac may (knmach vong).

Bo x ly moun ng day thue bao (A-SLMCP) quet cac mach ng daythue bao analog (SLCA) va phat hien yeu cau ket noi.

A-SLMCP gi ban tin chiem dung ve cho A-DLUC.Bo ieu khien n v ng day so (A-DLUC) gi ban tin chiem dung qua

n v giao tiep so cua DLU (A-DIUD) va A-DIU trong A-LTG en bo x ly

nhom (A-GP).A-GP kiem tra so sanh so lieu cua thue bao A vi so lieu trong c s d lieucua mnh (V du: o la thue bao gi so bang phm bam, co gi i han cac hngng dai) sau o gan cho mot khe thi gian (kenh thoai) va bao tin nay ve choA-SLMCP.

Hnh 4-2A-SLMCP nhan dang khe thi gian trong A-SLCA.A-GP sau o noi en bo chuyen mach nhom (A-GS) va phat yeu cau th

mach vong ng thoai t A-LTG en A-SLCA trong A-DLU tr ve A-LTG .Am hieu th trong mach vong la do A-SU cap. Mot bo nhan so trong A-SU se

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nhan am hieu th nay .Cung luc nay A-GP bao ve cho CP hay rang ng daythue bao A a ban.

Hnh 4-3Neu viec th mach vong thanh cong th A-GP gi lenh cho A-SLMCP tien hanh

noi ng thoai trong A-SLCA.A-GP luc nay noi en A-GS chuan b cho tien trnh nhan so quay.

Hnh 4-4Bo phat am hieu trong A-SU gi am hieu quay so en A-SLCA .Mot bo

nhan so trong A-SU luc nay a san sang nhan so.

Hnh 4-5Thue bao A nghe c am hieu quay so.Thue bao A bat au gi so bang phm bam, bo nhan so trong A-SU nhan

cac so ma nay.Bo nhan so trong A-SU chuyen nhng so a c ma hoa ve cho A-GP.

Khi va nhan c ma so au tien A-GP gi lenh cat am hieu quay so.

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Hnh 4-6

II. Cong viec anh gia ni CPA-GP sau khi gop so lieu ban au ve thue bao A vi tin tc so ma cua thue

bao B gi toan bo ve cho CP.CP so nhng tin tc nhan c tren vi c s d lieu cua mnh e xem

thue bao B ang ban hay roi.Neu thue bao B roi th CP nhan dang DLU ,SLCA, ng noi gia

DLU/LTG, quyet nh chon mot ng noi en mot trong hai LTG cua B-DLUva anh dau ban thue bao B nay.

Hnh 4-7CP sau o xac nh ng noi gia A-LTG va B-LTG xuyen qua mang

SN roi gi tin tc en SGC.Ke tiep la th ng truyen xuyen dai (COC) gia A-LTG va B-LTG.Sau khi th COC thanh cong, A-GP yeu cau A-GS ket noi en mang SN.

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III. Thiet lap ng noi gia B-LTG va thue bao Be ket noi thue bao B, B-GP chon mot khe thi gian va bao tin tc nay cho B-

SLMCP.

Hnh 4-8B-SLMCP luc nay nhan khe thi gian trong mach thue bao B-SLCA.B-GP noi en B-GS va phat yeu cau th mach vong t B-LTG en B-

SLCA tr ve B-LTG. Bo phat am hieu th trong B-SU cung cap am hieu thcan thiet.

Trong B-SU bo nhan so nhan am hieu th nay.

Hnh 4-9

Khi th mach vong hoan tat B-GP gi lenh thiet lap ket noi en B-DLUC.

B-DLUC bao cho bo phat ien chuong (RGMG) gi ien the enchuong thue bao B.

Con B-GP th bao cho B-GS gi hoi am chuong ve thue bao A.Thue bao A luc nay nhan c hoi am chuong gi i t bo phat am hieu

trong B-SU.Thue bao B tiep cuoc goi en bang cach nhac may .B-SLCA phat hien viec

ong mach vong.

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B-SLMCP khi quet mach thue bao B-SLCA nhan ra rang thue bao Bmuon tiep nhan cuoc goi.

Viec kn mach vong c B-SLMCP bao ve cho B-DLUC. B-DLUCgi lenh cat ien chuong va phat ban tin bao ve B-GP.Nhan c tin nay B-GP cat hoi am chuong va thiet lap mach thoai

xuyen qua B-GS .B-GP gi bao hieu hoi ap ve A-GP.Viec ket noi gia hai thue bao cuoi cung hoan tat.Cc cho cuoc goi c A-GP lu tr mot trong nhng bo ghi e sau o

chuyen ve cho CP vao cuoi cuoc goi.

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CHNG 5

MOT SO DCH VU TONG AI

I. Dch vu khai bao cong them : Chuyen hng cuoc goi tc thi (Diversionimmediately) cho ai, ma dch vu: 21, cho thue bao an phm. Ch chuyen hngtrong pham vi noi hat. V du gan dch vu nay cho thue bao so 8966652.

Thc hien gan dch vu: Gan dch vu cho tong ai:ENTRSCFEA:FEAT = ENTRACT DIVI, CODE = 21, DIALTP = PB, MARKS =

AUTH;ENTRSCFEA:FEAT = DELDACT DIVI, CODE = #21, DIALTP = PB, MARKS =

AUTH;

ENTRTRAINC:TRATP = LOCAL, DIV = Y; Gan dch vu ni thue bao:MODSUB:DN = 89666652, DIV = DIVI&DIVIMOD;Xoa dch vu ni thue bao:MODSUB:DN = 89666652, CDIV = DIVI&DIVIMOD; Thue bao t cai chuyen cuoc goi cho may 8966653: 21

8966653 # Thue bao t xoa so cai ke tren: # 21 #

II. Khai bao dch vu nh 5.1 cho thue bao dung cho may ien thoai co a quayso, trong o, thay v, thay v bam phm th quay so 1111, va thay v bam phm# th quay so 1112.

Thc hien gan dch vu: Gan dch vu cho tong ai:ENTRSCFEA:FEAT = ENTRACT DIVI, CODE = 111121, DIALTP = PB, MARKS =

AUTH;ENTRSCFEA:FEAT = DELDACT DIVI, CODE = 111221, DIALTP = PB, MARKS =

AUTH;ENTRTRAINC:TRATP = LOCAL, DIV = Y;

Gan dch vu ni thue bao:MODSUB:DN = 89666652, DIV = DIVI&DIVIMOD; Xoa dch vu ni thue bao:MODSUB:DN = 89666652, CDIV = DIVI&DIVIMOD; Thue bao t cai chuyen cuoc goi cho may 8966653: 1111 21 1111

8966653 1112 Thue bao t xoa so cai ke tren: 1112 21 1112

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III. Khai bao dch vu cong them: chuyen hng cuoc goi khi ban (Calldiversionon busy) cho ai va cho thue bao analog mang so 8966654, gi so bang phng

thc TONE, Ma dch vu 24. Khai bao dch vu cho tong ai:ENTRSCFEA:FEAT = ENTRACT DIVBY, CODE = 24, DIALTP = PB, MARKS =

AUTH;ENTRSCFEA:FEAT = DELDACT DIVBY, CODE = #24, DIALTP = PB,

MARKS = AUTH; Khai bao dch vu ni thue bao:

Cai dch vu: MODSUB:DN = 89666654, DIV = DIVBY&DIVBYMOD;Xoa dch vu: MODSUB:DN = 89666654, CDIV = DIVBY&DIVBYMOD;

Thue bao t cai va xoa dch vu chuyen cuoc goi sang may 8966653:Cai: 24 8966653 #Xoa: # 24 #

IV. Khai bao dch vu cong them: chuyen hng cuoc goi khi ban (Calldiversionon busy) cho ai va cho thue bao analog mang so 8966654, gi so bang phngthc TONE, Ma dch vu 25.

Khai bao dch vu cho tong ai:ENTRSCFEA:FEAT = ENTRACT DIVDA, CODE = 25, DIALTP = PB, MARKS =

AUTH;

ENTRSCFEA:FEAT = DELDACT DIVDA, CODE = #25, DIALTP = PB,MARKS = AUTH;

Khai bao dch vu ni thue bao:Cai dch vu: MODSUB:DN = 89666654, DIV = DIVDA&DIVDAMOD;Xoa dch vu: MODSUB:DN = 89666654, CDIV = DIVDA&DIVDAMOD;Thue bao t cai va xoa dch vu chuyen cuoc goi sang may 8966653:

Cai: 25 8966653 #Xoa: # 25 #

V. Khai bao dch vu cong them: khong quay ray (Do not disturb), ma dch vu23, cho thue bao an phm, gi so che o TONE.

Khai bao dch vu cho tong ai:ENTRSCFEA:FEAT = ACT DIVND, CODE = 23, DIALTP = PB, MARKS = AUTH;ENTRSCFEA:FEAT = DACT DIVND, CODE = #23, DIALTP = PB, MARKS =

AUTH;Khai bao dch vu ni thue bao 8966650:

Cai dch vu: MODSUB:DN = 89666650, DIV = DIVND;Xoa dch vu: MODSUB:DN = 89666650, CDIV = DIVND;Thue bao t cai va xoa dch vu:

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Cai: 25 #Xoa: # 25 #

VI. Khai bao thue so 8966650 dch vu hoi thoai 3 ngi: Khai bao dch vu ni thue bao 8966650:Cai dch vu: MODSUB:DN = 8966650, COS = CONF3;Xoa dch vu: MODSUB:DN = 8966650, CCOS = CONF3; Thue bao A thc hien hoi thoai 3 ngi vi thue bao B va C: A goi B, A bao B gi may, A gac va nhac may len lai, nghe am hieu mi gi so, A goi C, A bao C gi may, A gac va nhac may len lai, nghe am hieu, bam so 3, A, B, C hoi thoai.

VII. Dch vu u tien khi xay ra tnh huong khan cap (Catastrophe immunity).Khai bao khi xay ra tnh huong khan cap u tien loai 1 cho thue bao 8966650,va u tien loai 2 cho thue bao 8966651.

Cai dch vu: MODSUB:DN = 8966650, COS = CATIMM1;MODSUB:DN = 8966651, COS = CATIMM2;

Xoa dch vu: MODSUB:DN = 8966650, CCOS = CATIMM1;MODSUB:DN = 8966651, CCOS = CATIMM2;

Hien th trang thai khan cap cua tong ai:DISP CATAST;

a tong ai vao hoat ong tnh huong khan cap vi nhom thue bao coma vung 8:

ENTR CATAST:LAC = 8, CATCON = 1 (HOAC 2)Giai toa tnh huong khan cap:

CANCATAST: LAC = 8;

VIII.Khai bao dch vu ng day nong tc thi (Hotline immediately) chothue bao so 8966650 e khi nhac may se rung chuong so 8966651:

Cai dch vu: MODSUB:DN = 8966650, COSDAT = HOTLIMM 8966651;Xoa dch vu: MODSUB:DN = 8966650, CCOSDAT = HOTLIMM;

IX. Khai bao dch vu ng day nong tr hoan (Delay hotline), ma dch vu 53,cho thue bao an phm. Gan dch vu nay cho thue bao so 8966650:

Khai bao dch vu cho tong ai:ENTRSCFEA:FEAT = ENTRACT HOTLINE, CODE = 53, DIALTP = PB, MARKS =

AUTH;ENTRSCFEA:FEAT = DELDACT HOTLINE, CODE = #53, DIALTP = PB,

MARKS = AUTH;

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Khai bao dch vu ni thue bao:Cai dch vu: MODSUB:DN = 89666650, COSDAT = DNHLMOD;Xoa dch vu: MODSUB:DN = 89666650, CCOSDAT = DNHLMOD; Thue bao t cai va xoa dch vu e goi sang may 8966653:Cai: 53 8966653 #Xoa: # 53 #

X. Khai bao dch vu cuoc goi ch i (Call waiting) cho ai, ma dch vu 43, chothue bao an phm, gan dch vu nay cho thue bao so 8966650:

Khai bao dch vu cho tong ai:ENTRSCFEA:FEAT = ACT CW, CODE = 43, DIALTP = PB, MARKS = AUTH;

ENTRSCFEA:FEAT = DACT CW, CODE = #43, DIALTP = PB, MARKS =AUTH;

Khai bao dch vu ni thue bao:Cai dch vu: MODSUB:DN = 89666650, COS = CWACT;Xoa dch vu: MODSUB:DN = 89666650, CCOS = CWACT; Thue bao t cai va xoa dch vu chuyen cuoc goi sang may 8966653:Cai: 43 B #Xoa: # 43 #Gia s thue bao 8966650 ang am thoai vi may A. Vao luc nay may B

goi en, may B nghe hoi am chuong. Thue bao 8966650 nghe am hieu bao hieugoi, chia tay vi may A, gac may xuong nghe chuong nhac may am thoai vimay B.

XI. Dch vu quay so tat (Abbrieviated Dialing): khai bao dch vu quay so tat,ma dch vu 51, cho thue bao an phm, gan dch vu nay cho thue bao so 8966654:

Khai bao dch vu cho tong ai:ENTRSCFEA:FEAT = ENTR ABBD, CODE = 51, DIALTP = PB, MARKS = AUTH;ENTRSCFEA:FEAT = DEL ABBD, CODE = #51, DIALTP = PB, MARKS =

AUTH;

Khai bao hai so tat 1 va 2 cho ai:ENTRSCFEA:FEAT = USE ABBD, CODE = 51, DIALTP = PB, MARKS = AUTH;ENTRSCFEA:FEAT = USE ABBD, CODE = 51, DIALTP = PB, MARKS =

AUTH; Khai bao dch vu ni thue bao:Cai dch vu: MODSUB:DN = 89666654, ABB = ABBD10&ABNMOD1;Xoa dch vu: MODSUB:DN = 89666654, CABB = ABBD10&ABNMOD1; Thue bao t cai so tat 1 cho so 073 8966653:Cai: 51 1 073 8966653 #

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Thue bao goi tat: 1Thue bao xoa so tat: # 51 1 #

XII. Khai bao dch vu truy tm cuoc goi quay pha (Malicious call) cho cuoc goi noiai, truy tm tc thi (Call identification immediately) va truy tm khi can (Callidentification on request), cho thue bao so 8966650, thc hien cuoc quay pha va tm solieu ve cuoc goi nay:

Truy tm tc thi: MODSUB:DN = 89666650, COS = CALLDIMM;Truy tm khi can: MODSUB:DN = 89666650, COS = CALLDREQ;Tm lai so lieu cuoc goi quay pha: ACCEPCALLID;

TRANSBUFFER:TYPE = MAL;DISMAL:DN = 8966680

Xoa dch vu ni thue bao:Truy tm tc thi: MODSUB:DN = 89666650, CCOS = CALLDIMM;Truy tm khi can: MODSUB:DN = 89666650, CCOS = CALLDREQ;

XIII. Dch vu gii han hng goi i (Traffic restriction): khai bao dch vu giihan hng goi i cho ai, ma dch vu 54, cho thue bao an phm, co dung marieng (keyword). Khai bao theo bang sau:

Lp lu lng(Traffic class)

Loai lu lng (Traffic type)

1 Quoc te t ong2 Quoc te t ong, Quoc te qua ien thoai vien,3 QTT, QTQDTV, ng dai t ong4 QTT, QTQDTV, DT, ng dai qua TV

Cuoi cung gan dch vu nay cho thue bao so 8966650, khai bao ma rieng1234 cho thue bao nay:

Khai bao dch vu cho tong ai:ENTRSCFEA:FEAT = ENTRACT TRARSTR, CODE = 54, DIALTP = PB, MARKS =

AUTH&KEYWORD;ENTRSCFEA:FEAT = DELDACT TRARSTR, CODE = #54, DIALTP = PB,

MARKS = AUTH&KEYWORD; Khai bon lp lu thoai:DISPTRABLOCK:TRACL = X;ENTRTRABLOCK:TRACL = TRACL1, TRAT = INTNAT;ENTRTRABLOCK:TRACL = TRACL2, TRAT = INTNAT&OP1;ENTRTRABLOCK:TRACL = TRACL3, TRAT = INTNAT&OP1&NAT1;ENTRTRABLOCK:TRACL = TRACL4, TRAT = INTNAT&OP1&NAT1&OP2; Gan va xoa dch vu cho thue bao:Cai dch vu: MODSUB:DN = 89666650, TRARSTR = TRACLACT&TRACLMOD;

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Xoa dch vu: MODSUB:DN = 89666650, CTRARSTR =TRACLACT&TRACLMOD;

Cai ma rieng cho thue bao:ENTRKEYWORD:DN = 8966650, KEY = 1234;Hoac: ENTRKEYWORD:DN = 8966650, KEY = 1234, SECURE = Y; (Neu

muon bao DISPKEYWORD:DN = 8966650 mat Keyword) Thue bao t thao tac giii han cac hng goi tren:Cai: 54 1234 4 #Xoa: # 54 1234 4 # Tong ai khai bao gii han tat ca cac hng goi tren:MODSUB:DN = 89666650, OPTRCL = 4;

XIV. Dch vu nhom ng day PBX (Private branch exchange):Nhom ng day gom hai loai: Nhom ng day noi en may ien thoai rieng le (Multiline hunting

group: nhom tm chon trong nhieu ng day). Nhom ng day noi en trung ke tong ai noi bo (PBX).

V du: khai bao nhom ng day PBX vao cac cong nh sau (so chung8966650).

Cong STT So rieng Cc Truy nhap bang Hng goi10-1-0-0 1 8966650 So

chung

So chung Vao

10-1-0-1 2 8966651 So rieng So chung Ra10-1-0-2 3 8966652 So

chungSo chung va sorieng

Hai chieu

Khai bao so chung:CRPBX:DN = 8966650, TYPE = MLHG, DIAL = NOTDIAL, HUNT =

SEQSRCH; Khai bao ng day so 1:CRPBXLN:DN = 8966650, LNO = 1, EQN = 10-1-0-0, LNS = 8966650, CAT =

MS, LNATT = PB, CHRG = METPDN, OPMODE = ABW; Khai bao ng day so 2:CRPBXLN:DN = 8966651, LNO = 2, EQN = 10-1-0-1, LNS = 8966651, CAT =

MS, LNATT = PB, CHRG = METPDN, OPMODE = ABW; Khai bao ng day so 3:CRPBXLN:DN = 8966652, LNO = 3, EQN = 10-1-0-2, LNS = 8966652, CAT =

MS, LNATT = PB, CHRG = METPDN, OPMODE = ABW;

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PHAN IIHE THONG VIBA SO

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THIET B VI BA RMD1504Thiet b thc tap: RMD1504Tan so hoat ong: 1427Mhz 1535MhzS o khoi cua RMD1504:

I. May phat

1.1. Khoi bang tan goc phat:

Mach nguon. Mach bang tan goc. Mach bang tan goc phu. Mach khuech ai logarit va canh bao.

X lBang tangoc phat

Kch thch

oi tanKhuech

aitrung tan

X lBang tangoc thu

KhuechaiRF

In

Out

Tx

Rx

Kenhtruyen

vo tuyen

X lBang tangoc phat

Kch thchKhuech

aiRF

Tx

Kenh nghiepvu

{Mbps22

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1.1.1. Mach nguon

Mach nguon may phat co ngo vao la -24V hoac -48V DC, ngo ra co 5mc tuy yeu cau cua may phat: -5V, +5V, +10V, +20V, +36V. Mach nguonc thiet ke chong qua ap va qua dong.

1.1.2. Mach bang tan goc phat Chuyen ma HDB3 sang NRZ. Phuc hoi xung clock e ong bo he thong. Ghep luong: 22Mbps thanh 14,245Mbps. Ma hoa gia ngau nhien (PRBS). Ma hoa vi sai cho 2 luong tn hieu.

Chen AIS khi co rt luong e am bao 4,245Mbps.1.1.3. Bang tan goc phuX l tn hieu tng t t khoi nghiep vu (300Hz 2200Hz) va khoi giam

sat (2,7Khz 5Khz) thanh 1 tn hieu tng t.1.1.4. Mach khuech ai Logarit / Mach canh baoMach khuech ai logarit chuyen gia tr ien ap giam sat thanh gia tr

tren thang logarit. ien ap ALC tao ra t bo giam sat RF ieu khien ALC trongkhoi kch thch.

Mach canh bao ch ra loi trong may phat gom:o

en data in.Oen Tx fail.Oen Px level.

Khi khoi kch thch h th en Tx fail se sang.Khi mat 1 trong 2 luong data in th Tx fail se sang.Khi h khoi khuech ai cong suat th en Px sang.

1.2. Khoi kch thch

NRZ

Sub band

AIS

PRBS{ }Mbps22

Kenh nghiepvu

Kenh giam sat

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Mach ieu che OQPSK: 2 luong so c cong lai tao thanh tn hieu

OQPSK vi tan so f = 220Mhz.Mach tong hp tan so: tao ra tan so fvco e nang tan, fTx= fvco + IF ,

fvco = 12071315Mhz, co 4 cong tac thap phan, ieu chnh tan so ngo ra tngnac 100Khz.

Mach nang tan (Upmixer): nang tan, khuech ai tn hieu bien +8dBme chuan b tn hieu cho tan khuech ai.

1.3. Khoi khuech aiCo 4 tan khuech ai emiter lp A e nang cong suat len 37dBm.Khoi bao ve hap thu cong suat d tha e tranh phan hoi lam h may phat.

II. May thu

2.1 Khoi oi tan

LNA khuech ai tn hieu len 2dBm.

OQPSK Upmixer

VCO

oi tan

Khuechai

trung tan

X lBang tangoc thu

Rx

(-108 -50)dBm

Rx

(-108 -50)dBm

LNA Tron

VCO

IF

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Mach tron can bang triet tan so anh dung bo coupler, tai tn hieu IF co fIF =35Mhz.

Mach tong hp tan so: fVCO = (1398 1500)Mhz.2.2 Khoi khuech ai trung tan

Mach loc trung tan. Mach AGC ieu khien t ong o li.2.3 Khoi bang tan goc thu Giai ieu che OQPSK, tai tao 2 luong so data so I, Q. Phuc hoi xung clock bang vong costar. Giai ma vi sai tao 1 luong data so 4,245Mbps. Giai ma gia ngau nhien. Phan luong: tai 22Mbps. Chuyen ma NRZ thanh HDB3. Xen tn hieu AIS. Mach bang tan goc phu:X l tn hieu kenh nghiep vu va giam sat t mach phuc hoi xung clock.Loc thong cao 2,7Khz a en bo giam sat.Loc thong thap 2,2Khz a en kenh nghiep vu .

Mach hien th:en canh bao PR level, Data out , Rs fail. Cung cap tn hieu nghiep ra loa.

AGCLoc

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PHAN III

TRUYEN DAN QUANG

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THIET B TRUYEN DAN QUANG

SMA1KThiet b thc tap: SMA1K (Siemens)Ghep kenh: SDH_STM-1Toc o: 155,52 Mbps

I.Tong quan :SDH ( Synchronous Digital Hierachy ) la tn hieu c tao ra t viec ghep cac kenh

PDH . Theo tieu chuan Chau Au , luong thong tin E1 co toc o truyen dan la 2048 kbps sdung phng thc PCM-30

SDH c tao ra t STM-N ( co the la STM-1 hoac STM-4 ).Trong phan nay , ta tm hieu ve thiet b SMA1K cua hang Siemens , so 1

ay co ngha la thiet b nay s dung dang thc khung STM-1 co toc o155.52Mhz e truyen dan.Sau ay,chung ta se tm hieu ve dang khung STM-1.

RSOH : Regeneration Section OverHeadMSOH : Multiplexing Section OverHeadCac cau hnh mang SDH :

270 cot

3 dong

1 dong

5 dongPointe

RSOH

MSOH

Payload( 63 luong E1 ) 9 dong

125 s

9 cot 261 cot

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iem-iem :

Linear ( chuoi ) :

Ring ( vong ) :

Star ( sao ) :

A B

TRM/TE

STM-1

SDH Interface

PDH Interface

A B C N

ADM

A B C

D

E

B

CA

D

Host

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Hybrid Network ( hon hp ) :

Chu thch :TE : Terminal EquipmentADM : Add/Drop Multiplexer

ng dung : SMA1K co the s dung mang 1,2,3.II.Cau truc phan cng :

Rack ( 19 inch hoac 22 inch ) Subrack ( Shelf ) Cards ODF ( Optical Distribution Frame ) MDF ( DDF ) ( Main Distributiion Frame )

Power Systems EOW PC Interface

III.Phan mem Win NT4 NE-Unigate

oLCT : Local Crayt TerminaloNCT : Network Craft Terminal