1 - ГрандСервис. Телекоммуникационное оборудование

GHTJ pfvtybntkmvjltvf b ub,rbq ,eath• Gjllth;bdftn bynthatqcs% V.24/RS-232, V.35,G.703 !cjyfghfdktyysq 64 R,bn#c> 1.544V,bn#c> 2.048 V,bn#c@> V.36/RS-449 b X.21• Bynthatqcyst vjlekb> pfvtyztvst yf vtcnt• Gthtrk/xfntkm DTE/DCE lkz rf;ljujbynthatqcf !rhjvt bynthatqcf G.703@• Crjhjcnm jn 1.2 R,bn#c lj 2.048 V,bn#c• Vjltkm UCI: dyenhtyybq utythfnjh nfrnjds[bvgekmcjd xfcnjnjq lj 512 R,bn#c> dytiybqutythfnjh nfrnjds[ bvgekmcjd xfcnjnjq lj2.048 V,bn#c& vjltkm UCI/HS: dyenhtyybq bkbdytiybq utythfnjh nfrnjds[ bvgekmcjdxfcnjnjq lj 2.048 V,bn#cUCI - eybdthcfkmysq ghtj,hfpjdfntkm bynthatqcjd>j,tcgtxbdf/obq cnsrjdre k/,s[ lde[ ecnhjqcndgthtlfxb lfyys[. Eybrfkmyfz jcj,tyyjcnm UCI - 'njdjpvj;yjcnm bcgjkmpjdfnm tuj d rfxtcndtUCI, UCI/HSEybdthcfkmyst ghtj,hfpjdfntkb bynthatqcjdbynthatqcyjuj ghtj,hfpjdfntkz>pfvtybntkz vjltvf b ub,rjuj ,eathf.Vj;yj dhexye/ ds,hfnm jlby bp erfpfyys[nht[ ht;bvjd hf,jns UCI:1@ Ghtj,hfpjdfntkm bynthatqcjd lftndjpvj;yjcnm ghbcjtlbybnm DTE r DCE chfpysvb bynthatqcfvb.2@ Pfvtybntkm vjltvf gjpdjkztnj,jqnbcm ,tp lde[ cby[hjyys[ vjltvjd bytgjchtlcndtyyj cjtlbybnm ldf ecnhjqcndfDTE c fyfkjubxysvb bkb hfpysvbbynthatqcfvb. UCI dslftn cby[hjbvgekmcsb jceotcndkztn ecnfyjdktybt cdzpb cj,vtyjv eghfdkz/obvb cbuyfkfvb>'vekbhez ltqcndbt vjltvf lkz cdzpbvt;le 'nbvb ldevz ecnhjqcndfvb DTE.3@ "kfcnbxysq ,eath j,tcgtxbdftndjpvj;yjcnm cjtlbytybz lde[ ecnhjqcndDCE c ytpfdbcbvjq cby[hjybpfwbtq bldeyfghfdktyye/ ,eathbpfwb/ lfyys[>ghtljndhfofz gjnth/ lfyys[> rjnjhfzbyfxt bvtkf ,s vtcnj bp-pf hfpyjcnb afpcby[hjbvgekmcjd. Ecnhjqcndf DCE vjuen,snm c fyfkjubxysvb bkb hfpysvbbynthatqcfvb.Multiplexer128 kbpsX.21UCIV.36MultiplexerUCI hf,jnftn cj crjhjcnm/ gthtlfxblfyys[ lj 2.048 V,bn#c ghb bcgjkmpjdfybbdytiytuj utythfnjhf cby[hjybpfwbb bkb lj512 R,bn#c ghb dyenhtyytv bcnjxybrtcby[hjbvgekmcjd. Cgtwbfkmyfz vjltkm -UCI/HS - gjllth;bdftn crjhjcnb gthtlfxblfyys[ lj 2.048 V,bn#c ghb dyenhtyytvbkb dytiytv bcnjxybrt cby[hjbvgekmcjd.Ldf bynthatqcf UCI htfkbpe/ncz cgjvjom/ vjlektq> rjnjhst vj;yjpfvtyznm d eckjdbz[ 'rcgkefnfwbb. Drf;ljv bynthatqcyjv vjlekt !rhjvtbynthatqcf G.703) ghtlecvjnhtygthtrk/xfntkm DTE/DCE. "nj ltkftn UCI,jktt eybdthcfkmysv b gjpdjkztnbcgjkmpjdfnm d hfpkbxys[ ghbkj;tybz[ ,tprf,tktq c rhjcc-gjlrk/xtybzvb.Gjcnfdkztvst bynthatqcyst vjlekb%RS-232/V.24, V.35, RS-449/V.36, X.21, G.703cjyfghfdktyysq !64 R,bn#c@> G.703yf 1.544 V,bn#c !ytcnhernehbhjdfyysq@>G.703 yf 2.048 V,bn#c!ytcnhernehbhjdfyysq@. Vj;yjbcgjkmpjdfnm bynthatqcyst vjlekb dhfpys[ cjxtnfybz[> xnj gjpdjkztn gjkexbnmk/,e/ rjv,byfwb/ bynthatqcjd.GHTJgjpdjkz/obq gthtlfdfnm nhfabr fggfhfnehs T1 gjldev rfyfkfv N1. Rf;lsq rflh gjnjrf T1!2.048 V,bn#c@ hfp,bdftncz yf ldf rflhf N1!1.544 V,bn#c@. Ghb 'njv SPD-E1 jcnftnczghjphfxysv lkz cnhernehs rflhjd T1.Gjlfdktybt afpjdjuj lhj;fybz yf j,tb[cnjhjyf[ j,tcgtxbdftn ecnjqxbde/hf,jne. Lkz rfyfkf N1 vjuenbcgjkmpjdfnmcz ajhvfns rflhjd D4 b ESFb kbytqyst rjls AMI b B8ZS. Ghb hf,jntd ajhvfnt ESF cnfnbcnbrf ukfdyjuj rfyfkfN1 cj[hfyztncz d gfvznb ecnhjqcndf.Jgthfnjh ctnb bkb gjkmpjdfntkm vj;tngjkexbnm ljcneg r ytq xthtp eghfdkz/obqgjhn. Ecnhjqcndj gjllth;bdftn dctdjpvj;yst dfhbfyns cby[hjybpfwbb. D b[xbckj d[jlzn ghjphfxyfz cby[hjybpfwbz>cby[hjybpfwbz jn cbuyfkjd> gjkextyys[bp kbybb> jn dyenhtyytuj bkb jn dytiytujutythfnjhf. Ytpfdbcbvst 'kfcnbxystE12.048Mbpsn x 56 kbpsorn x 64 kbpsSPD-E12xT11.544MbpsT1TransmissionFacilities,eathf lkz gthtlfxb d rf;ljvyfghfdktybb gjpdjkz/n rjvgtycbhjdfnmrhfnrjdhtvtyyst hfc[j;ltybz vt;lebcnjxybrfvb cby[hjybpfwbb. Ecnhjqcndjhf,jnftn gjlj,yj bydthcyjvevekmnbgktrcjhe b hfcghtltkztn rf;lsqrflh T1 !256 ,bn@ gjhjdye vt;le ldevzrflhfvb N1. Lkz 'njuj d rf;ljv rfyfkt N1bcgjkmpe/ncz dhtvtyyst bynthdfks c 1gj 16. Jcnfdifzcz gjkjcf ghjgecrfybzvj;tn ,snm pfgjkytyf lfyysvbljgjkybntkmyjuj rfyfkf n x 64 R,bn#c.SPD-E1 dsgecrftncz d dblt fdnjyjvyjujecnhjqcndf b vj;tn ,snm ecnfyjdkty dcnjqrt 19$ ghb gjvjob cjjndtncnde/ob[rhtgktybq.2xT11.544MbpsSPD-E1E12.048Mbpsn x 56 kbpsorn x 64 kbpsRAD Data Communications 2005 Rfnfkju125