{"id":477008,"date":"2023-08-09T09:06:01","date_gmt":"2023-08-09T09:06:01","guid":{"rendered":""},"modified":"2024-01-04T06:22:15","modified_gmt":"2024-01-04T06:22:15","slug":"dslam","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/dslam\/","title":{"rendered":"DSLAM"},"content":{"rendered":"

DSLAM l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Digital Subcriber Line Access Multiplexer, l\u00e0 thi\u1ebft b\u1ecb m\u1ea1ng d\u00f9ng \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00e0 t\u1ed5ng h\u1ee3p c\u00e1c \u0111\u01b0\u1eddng d\u00e2y thu\u00ea bao s\u1ed1 (DSL) t\u1eeb nhi\u1ec1u kh\u00e1ch h\u00e0ng th\u00e0nh m\u1ed9t li\u00ean k\u1ebft dung l\u01b0\u1ee3ng cao h\u01b0\u1edbng t\u1edbi m\u1ea1ng l\u00f5i c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5. N\u00f3 l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong vi\u1ec7c cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 b\u0103ng r\u1ed9ng d\u1ef1a tr\u00ean DSL, cho ph\u00e9p truy c\u1eadp Internet t\u1ed1c \u0111\u1ed9 cao qua \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n tho\u1ea1i \u0111\u1ed3ng truy\u1ec1n th\u1ed1ng.<\/p>\n

L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a DSLAM v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n

L\u1ecbch s\u1eed c\u1ee7a DSLAM b\u1eaft \u0111\u1ea7u t\u1eeb cu\u1ed1i nh\u1eefng n\u0103m 1990 khi nhu c\u1ea7u truy c\u1eadp Internet b\u0103ng th\u00f4ng r\u1ed9ng b\u1eaft \u0111\u1ea7u t\u0103ng cao. Khi k\u1ebft n\u1ed1i quay s\u1ed1 kh\u00f4ng c\u00f2n c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u truy\u1ec1n d\u1eef li\u1ec7u nhanh h\u01a1n ng\u00e0y c\u00e0ng t\u0103ng, c\u00e1c c\u00f4ng ty vi\u1ec5n th\u00f4ng b\u1eaft \u0111\u1ea7u kh\u00e1m ph\u00e1 c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u1ed3ng hi\u1ec7n c\u00f3 hi\u1ec7u qu\u1ea3 h\u01a1n. C\u00f4ng ngh\u1ec7 DSL n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p kh\u1ea3 thi v\u00e0 c\u00f9ng v\u1edbi n\u00f3, nhu c\u1ea7u v\u1ec1 m\u1ed9t thi\u1ebft b\u1ecb t\u1ed5ng h\u1ee3p c\u00e1c k\u1ebft n\u1ed1i DSL m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 tr\u1edf n\u00ean r\u00f5 r\u00e0ng. Vi\u1ec7c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn DSLAM l\u1ea7n \u0111\u1ea7u ti\u00ean c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb c\u00e1c t\u00e0i li\u1ec7u v\u00e0 ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt ban \u0111\u1ea7u li\u00ean quan \u0111\u1ebfn vi\u1ec7c tri\u1ec3n khai DSL.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 DSLAM<\/h2>\n

DSLAM l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng, ch\u1ecbu tr\u00e1ch nhi\u1ec7m cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 b\u0103ng r\u1ed9ng d\u1ef1a tr\u00ean DSL cho gia \u0111\u00ecnh v\u00e0 doanh nghi\u1ec7p. N\u00f3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 \u0111i\u1ec3m h\u1ed9i t\u1ee5 n\u01a1i nhi\u1ec1u k\u1ebft n\u1ed1i DSL ri\u00eang l\u1ebb \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u00e0 k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng l\u00f5i c\u1ee7a nh\u00e0 cung c\u1ea5p. DSLAM th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai trong c\u00e1c t\u1ed5ng \u0111\u00e0i \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c t\u1ea1i c\u01a1 s\u1edf c\u1ee7a kh\u00e1ch h\u00e0ng \u0111\u1ed1i v\u1edbi c\u00e1c ki\u1ebfn tr\u00fac Fiber to the Node (FTTN) v\u00e0 Fiber to the Cabinet (FTTC).<\/p>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a DSLAM: C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a DSLAM<\/h2>\n

DSLAM c\u00f3 c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p, bao g\u1ed3m nhi\u1ec1u th\u00e0nh ph\u1ea7n kh\u00e1c nhau ph\u1ed1i h\u1ee3p v\u1edbi nhau \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c k\u1ebft n\u1ed1i DSL v\u00e0 \u0111\u1ea3m b\u1ea3o truy\u1ec1n d\u1eef li\u1ec7u li\u1ec1n m\u1ea1ch. C\u1ea5u tr\u00fac b\u00ean trong th\u01b0\u1eddng bao g\u1ed3m:<\/p>\n

    \n
  1. Th\u1ebb \u0111\u01b0\u1eddng d\u00e2y: \u0110\u00e2y l\u00e0 c\u00e1c th\u1ebb giao di\u1ec7n k\u1ebft n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng d\u00e2y thu\u00ea bao ri\u00eang l\u1ebb v\u1edbi DSLAM. Card \u0111\u01b0\u1eddng d\u00e2y h\u1ed7 tr\u1ee3 nhi\u1ec1u c\u00f4ng ngh\u1ec7 DSL kh\u00e1c nhau nh\u01b0 ADSL, VDSL ho\u1eb7c G.fast, cho ph\u00e9p DSLAM ph\u1ee5c v\u1ee5 c\u00e1c lo\u1ea1i k\u1ebft n\u1ed1i kh\u00e1c nhau.<\/li>\n
  2. C\u1ea5u tr\u00fac chuy\u1ec3n m\u1ea1ch: C\u1ea5u tr\u00fac chuy\u1ec3n m\u1ea1ch ch\u1ecbu tr\u00e1ch nhi\u1ec7m \u0111\u1ecbnh tuy\u1ebfn v\u00e0 qu\u1ea3n l\u00fd l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u gi\u1eefa c\u00e1c card \u0111\u01b0\u1eddng truy\u1ec1n v\u00e0 m\u1ea1ng l\u00f5i.<\/li>\n
  3. B\u1ed9 x\u1eed l\u00fd \u0111i\u1ec1u khi\u1ec3n: B\u1ed9 x\u1eed l\u00fd \u0111i\u1ec1u khi\u1ec3n gi\u00e1m s\u00e1t ho\u1ea1t \u0111\u1ed9ng chung c\u1ee7a DSLAM, x\u1eed l\u00fd c\u00e1c t\u00e1c v\u1ee5 nh\u01b0 c\u1ea5u h\u00ecnh, qu\u1ea3n l\u00fd \u0111\u01b0\u1eddng d\u00e2y v\u00e0 gi\u00e1m s\u00e1t.<\/li>\n
  4. Giao di\u1ec7n \u0111\u01b0\u1eddng l\u00ean: C\u00e1c giao di\u1ec7n n\u00e0y k\u1ebft n\u1ed1i DSLAM v\u1edbi m\u1ea1ng l\u00f5i c\u1ee7a nh\u00e0 cung c\u1ea5p, th\u01b0\u1eddng th\u00f4ng qua k\u1ebft n\u1ed1i Ethernet ho\u1eb7c quang.<\/li>\n<\/ol>\n

    Khi ng\u01b0\u1eddi d\u00f9ng b\u1eaft \u0111\u1ea7u m\u1ed9t y\u00eau c\u1ea7u internet, DSLAM s\u1ebd nh\u1eadn d\u1eef li\u1ec7u v\u00e0 chuy\u1ec3n ti\u1ebfp n\u00f3 \u0111\u1ebfn \u0111\u00edch th\u00edch h\u1ee3p th\u00f4ng qua m\u1ea1ng l\u00f5i. T\u01b0\u01a1ng t\u1ef1, d\u1eef li\u1ec7u t\u1eeb m\u1ea1ng l\u00f5i \u0111\u01b0\u1ee3c h\u01b0\u1edbng t\u1edbi \u0111\u01b0\u1eddng DSL c\u1ee7a ng\u01b0\u1eddi d\u00f9ng t\u01b0\u01a1ng \u1ee9ng, ho\u00e0n th\u00e0nh lu\u1ed3ng d\u1eef li\u1ec7u hai chi\u1ec1u.<\/p>\n

    Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a DSLAM<\/h2>\n

    DSLAM cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh khi\u1ebfn ch\u00fang tr\u1edf n\u00ean c\u1ea7n thi\u1ebft \u0111\u1ec3 cung c\u1ea5p d\u1ecbch v\u1ee5 b\u0103ng th\u00f4ng r\u1ed9ng qua k\u1ebft n\u1ed1i DSL:<\/p>\n

      \n
    1. T\u1eadp h\u1ee3p: DSLAM t\u1ed5ng h\u1ee3p hi\u1ec7u qu\u1ea3 nhi\u1ec1u \u0111\u01b0\u1eddng DSL th\u00e0nh m\u1ed9t li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 cao duy nh\u1ea5t, t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u1ed3ng hi\u1ec7n c\u00f3.<\/li>\n
    2. K\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 cao: B\u1eb1ng c\u00e1ch h\u1ed7 tr\u1ee3 c\u00e1c c\u00f4ng ngh\u1ec7 DSL nh\u01b0 VDSL v\u00e0 G.fast, DSLAM c\u00f3 th\u1ec3 cung c\u1ea5p truy c\u1eadp Internet t\u1ed1c \u0111\u1ed9 cao, s\u00e1nh ngang v\u1edbi hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c k\u1ebft n\u1ed1i d\u1ef1a tr\u00ean c\u00e1p quang.<\/li>\n
    3. Gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch: K\u1ebft n\u1ed1i DSL b\u1ecb gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch, trong \u0111\u00f3 c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u suy gi\u1ea3m tr\u00ean \u0111\u01b0\u1eddng d\u00e2y \u0111\u1ed3ng d\u00e0i h\u01a1n. DSLAM \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf v\u1ecb tr\u00ed chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c thu\u00ea bao trong ph\u1ea1m vi ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c c\u00f3 th\u1ec3 truy c\u1eadp Internet t\u1ed1c \u0111\u1ed9 cao \u0111\u00e1ng tin c\u1eady.<\/li>\n
    4. Qu\u1ea3n l\u00fd thu\u00ea bao: DSLAM cung c\u1ea5p kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd thu\u00ea bao to\u00e0n di\u1ec7n, cho ph\u00e9p c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 gi\u00e1m s\u00e1t, \u0111\u1ecbnh c\u1ea5u h\u00ecnh v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u00e1c k\u1ebft n\u1ed1i DSL ri\u00eang l\u1ebb.<\/li>\n<\/ol>\n

      C\u00e1c lo\u1ea1i DSLAM<\/h2>\n

      DSLAM c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean v\u1ecb tr\u00ed v\u00e0 ki\u1ebfn tr\u00fac tri\u1ec3n khai c\u1ee7a ch\u00fang. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c lo\u1ea1i ch\u00ednh:<\/p>\n

        \n
      1. DSLAM V\u0103n ph\u00f2ng Trung t\u00e2m: Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t t\u1ea1i t\u1ed5ng \u0111\u00e0i \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c v\u0103n ph\u00f2ng trung t\u00e2m c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5. H\u1ecd t\u1ed5ng h\u1ee3p c\u00e1c k\u1ebft n\u1ed1i DSL t\u1eeb nhi\u1ec1u kh\u00e1ch h\u00e0ng trong m\u1ed9t khu v\u1ef1c \u0111\u1ecba l\u00fd c\u1ee5 th\u1ec3.<\/li>\n
      2. DSLAM t\u1eeb xa: Trong ki\u1ebfn tr\u00fac FTTN v\u00e0 FTTC, DSLAM t\u1eeb xa \u0111\u01b0\u1ee3c \u0111\u1eb7t g\u1ea7n ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i h\u01a1n, gi\u1ea3m \u0111\u1ed9 d\u00e0i v\u00f2ng \u0111\u1ed3ng v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng k\u1ebft n\u1ed1i DSL.<\/li>\n
      3. DSLAM t\u1ea1i c\u01a1 s\u1edf kh\u00e1ch h\u00e0ng: \u0110\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 khu ph\u1ee9c h\u1ee3p kinh doanh v\u00e0 d\u00e2n c\u01b0, DSLAM c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t tr\u1ef1c ti\u1ebfp t\u1ea1i c\u01a1 s\u1edf c\u1ee7a kh\u00e1ch h\u00e0ng, cung c\u1ea5p truy c\u1eadp Internet t\u1ed1c \u0111\u1ed9 cao cho nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng trong t\u00f2a nh\u00e0.<\/li>\n<\/ol>\n\n\n\n\n\n\n\n
        Lo\u1ea1i DSLAM<\/th>\nV\u1ecb tr\u00ed tri\u1ec3n khai<\/th>\nNg\u00e0nh ki\u1ebfn tr\u00fac<\/th>\n<\/tr>\n<\/thead>\n
        V\u0103n ph\u00f2ng trung t\u00e2m DSLAM<\/td>\nTrao \u0111\u1ed5i qua \u0111i\u1ec7n tho\u1ea1i<\/td>\nT\u1eadp trung<\/td>\n<\/tr>\n
        DSLAM t\u1eeb xa<\/td>\nG\u1ea7n g\u0169i h\u01a1n v\u1edbi ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i<\/td>\nPhi t\u1eadp trung<\/td>\n<\/tr>\n
        C\u01a1 s\u1edf kh\u00e1ch h\u00e0ng DSLAM<\/td>\nC\u01a1 s\u1edf kh\u00e1ch h\u00e0ng<\/td>\nTri\u1ec3n khai t\u1ea1i ch\u1ed7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng DSLAM, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng<\/h2>\n

        DSLAM \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c cung c\u1ea5p d\u1ecbch v\u1ee5 b\u0103ng th\u00f4ng r\u1ed9ng t\u1ed1c \u0111\u1ed9 cao cho kh\u00e1ch h\u00e0ng. Tuy nhi\u00ean, c\u00f3 m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p nh\u1ea5t \u0111\u1ecbnh li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng ch\u00fang:<\/p>\n

          \n
        1. Gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch<\/strong>: K\u1ebft n\u1ed1i DSL r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi kho\u1ea3ng c\u00e1ch v\u00e0 ng\u01b0\u1eddi d\u00f9ng \u1edf xa DSLAM h\u01a1n c\u00f3 th\u1ec3 g\u1eb7p t\u1ed1c \u0111\u1ed9 ch\u1eadm h\u01a1n. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, c\u00e1c nh\u00e0 cung c\u1ea5p ph\u1ea3i t\u1ed1i \u01b0u h\u00f3a v\u1ecb tr\u00ed DSLAM v\u00e0 c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 nh\u01b0 VDSL ho\u1eb7c G.fast, nh\u1eefng c\u00f4ng ngh\u1ec7 cung c\u1ea5p t\u1ed1c \u0111\u1ed9 cao h\u01a1n tr\u00ean c\u00e1c v\u00f2ng \u0111\u1ed3ng ng\u1eafn h\u01a1n.<\/li>\n
        2. Nhi\u1ec5u xuy\u00ean \u00e2m<\/strong>: Trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 nhi\u1ec1u \u0111\u01b0\u1eddng DSL \u1edf g\u1ea7n nhau, c\u00f3 th\u1ec3 x\u1ea3y ra nhi\u1ec5u xuy\u00ean \u00e2m, l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u. K\u1ef9 thu\u1eadt kh\u1eed ti\u1ebfng \u1ed3n ti\u00ean ti\u1ebfn v\u00e0 c\u00f4ng ngh\u1ec7 vect\u01a1 c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/li>\n
        3. N\u0103ng l\u1ef1c h\u1ea1n ch\u1ebf<\/strong>: Khi nhu c\u1ea7u v\u1ec1 internet t\u1ed1c \u0111\u1ed9 cao t\u0103ng l\u00ean, DSLAM ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng thu\u00ea bao ng\u00e0y c\u00e0ng t\u0103ng. C\u00e1c nh\u00e0 cung c\u1ea5p c\u00f3 th\u1ec3 n\u00e2ng c\u1ea5p l\u00ean DSLAM dung l\u01b0\u1ee3ng cao h\u01a1n ho\u1eb7c chuy\u1ec3n sang c\u00f4ng ngh\u1ec7 d\u1ef1a tr\u00ean s\u1ee3i quang \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng t\u1ed1t h\u01a1n.<\/li>\n
        4. C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng k\u1ebf th\u1eeba<\/strong>: DSLAM ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u1ed3ng hi\u1ec7n c\u00f3, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang so v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p c\u00e1p quang. C\u00e1c nh\u00e0 cung c\u1ea5p c\u00f3 th\u1ec3 xem x\u00e9t thay th\u1ebf d\u1ea7n \u0111\u01b0\u1eddng \u0111\u1ed3ng b\u1eb1ng c\u00e1p quang \u0111\u1ec3 mang l\u1ea1i k\u1ebft n\u1ed1i nhanh h\u01a1n v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n.<\/li>\n<\/ol>\n

          C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n

          D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh DSLAM v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 v\u00e0 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a n\u00f3:<\/p>\n\n\n\n\n\n\n\n\n
          Thu\u1eadt ng\u1eef<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\nC\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n
          DSLAM<\/td>\nB\u1ed9 gh\u00e9p k\u00eanh truy c\u1eadp \u0111\u01b0\u1eddng d\u00e2y thu\u00ea bao k\u1ef9 thu\u1eadt s\u1ed1<\/td>\nT\u1ed5ng h\u1ee3p nhi\u1ec1u k\u1ebft n\u1ed1i DSL<\/td>\n<\/tr>\n
          Modem<\/td>\nB\u1ed9 \u0111i\u1ec1u bi\u1ebfn-Gi\u1ea3i \u0111i\u1ec1u ch\u1ebf<\/td>\nK\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb ri\u00eang l\u1ebb v\u1edbi m\u1ea1ng th\u00f4ng qua DSL<\/td>\n<\/tr>\n
          B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn b\u0103ng th\u00f4ng r\u1ed9ng<\/td>\nK\u1ebft n\u1ed1i nhi\u1ec1u thi\u1ebft b\u1ecb v\u1edbi m\u1ea1ng v\u00e0 chia s\u1ebb quy\u1ec1n truy c\u1eadp internet<\/td>\nTh\u01b0\u1eddng bao g\u1ed3m modem DSL t\u00edch h\u1ee3p<\/td>\n<\/tr>\n
          OLT (Thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i \u0111\u01b0\u1eddng quang)<\/td>\nThi\u1ebft b\u1ecb truy c\u1eadp b\u0103ng th\u00f4ng r\u1ed9ng d\u1ef1a tr\u00ean s\u1ee3i quang<\/td>\nK\u1ebft n\u1ed1i nhi\u1ec1u thu\u00ea bao qua \u0111\u01b0\u1eddng c\u00e1p quang<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn DSLAM<\/h2>\n

          M\u1eb7c d\u00f9 DSLAM l\u00e0 c\u00f4ng c\u1ee5 cung c\u1ea5p d\u1ecbch v\u1ee5 b\u0103ng r\u1ed9ng, nh\u01b0ng c\u00e1c c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 s\u1ebd chuy\u1ec3n sang c\u00e1c gi\u1ea3i ph\u00e1p d\u1ef1a tr\u00ean s\u1ee3i quang, ch\u1eb3ng h\u1ea1n nh\u01b0 Fiber to the Home (FTTH) ho\u1eb7c c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf t\u1ed1c \u0111\u1ed9 cao kh\u00e1c. K\u1ebft n\u1ed1i c\u00e1p quang cung c\u1ea5p t\u1ed1c \u0111\u1ed9 cao h\u01a1n \u0111\u00e1ng k\u1ec3 v\u00e0 hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady h\u01a1n so v\u1edbi DSL qua c\u00e1p \u0111\u1ed3ng. Khi nhu c\u1ea7u Internet nhanh h\u01a1n t\u0103ng l\u00ean, c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 vi\u1ec5n th\u00f4ng c\u00f3 th\u1ec3 s\u1ebd \u0111\u1ea7u t\u01b0 nhi\u1ec1u h\u01a1n v\u00e0o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang, d\u1ea7n d\u1ea7n lo\u1ea1i b\u1ecf c\u00e1c m\u1ea1ng d\u1ef1a tr\u00ean DSLAM truy\u1ec1n th\u1ed1ng.<\/p>\n

          C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi DSLAM<\/h2>\n

          M\u00e1y ch\u1ee7 proxy v\u00e0 DSLAM kh\u00f4ng li\u00ean quan tr\u1ef1c ti\u1ebfp nh\u01b0ng c\u1ea3 hai \u0111\u1ec1u \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong h\u1ec7 sinh th\u00e1i d\u1ecbch v\u1ee5 vi\u1ec5n th\u00f4ng v\u00e0 internet. M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 internet, cung c\u1ea5p kh\u1ea3 n\u0103ng \u1ea9n danh, b\u1ea3o m\u1eadt v\u00e0 l\u1ecdc n\u1ed9i dung. M\u1eb7t kh\u00e1c, DSLAM l\u00e0 thi\u1ebft b\u1ecb ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ed5ng h\u1ee3p c\u00e1c k\u1ebft n\u1ed1i DSL v\u00e0 cung c\u1ea5p truy c\u1eadp Internet t\u1ed1c \u0111\u1ed9 cao cho c\u00e1c thu\u00ea bao. M\u1eb7c d\u00f9 ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c nhau nh\u01b0ng c\u1ea3 hai c\u00f4ng ngh\u1ec7 \u0111\u1ec1u g\u00f3p ph\u1ea7n n\u00e2ng cao tr\u1ea3i nghi\u1ec7m Internet t\u1ed5ng th\u1ec3 cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n

          Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n

          \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 DSLAM, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

            \n
          1. DSLAM \u2013 Wikipedia<\/a><\/li>\n
          2. T\u00ecm hi\u1ec3u DSLAM \u2013 Cisco<\/a><\/li>\n
          3. T\u1ed5ng quan v\u1ec1 c\u00f4ng ngh\u1ec7 DSL v\u00e0 DSLAM \u2013 Juniper Networks<\/a><\/li>\n<\/ol>","protected":false},"featured_media":477009,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477008","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about DSLAM: Digital Subscriber Line Access Multiplexer<\/mark>","faq_items":[{"question":"What is a DSLAM?","answer":"A DSLAM, which stands for Digital Subscriber Line Access Multiplexer, is a network device that manages and aggregates digital subscriber lines (DSL) from multiple customers into a high-capacity link towards the service provider's core network. It is a crucial component in the delivery of DSL-based broadband services, enabling high-speed internet access over traditional copper telephone lines."},{"question":"How did DSLAM originate, and when was it first mentioned?","answer":"DSLAM's history can be traced back to the late 1990s when the demand for broadband internet access started to rise. As dial-up connections couldn't keep up with the need for faster data transmission, telecommunication companies sought new technologies that could utilize existing copper infrastructure more efficiently. DSL technology emerged as a viable solution, and the first mentions of DSLAM can be found in early technical documentation and standards related to DSL deployment."},{"question":"How does a DSLAM work, and what is its internal structure?","answer":"A DSLAM has a hierarchical structure that includes line cards, a switch fabric, and a control processor. Line cards are interface cards that connect individual subscriber lines to the DSLAM, supporting various DSL technologies such as ADSL, VDSL, or G.fast. The switch fabric routes and manages data traffic between the line cards and the core network. The control processor oversees the overall operation of the DSLAM, handling tasks like configuration, line management, and monitoring. Uplink interfaces connect the DSLAM to the provider's core network."},{"question":"What are the key features of DSLAM?","answer":"DSLAMs offer several key features, including aggregation of multiple DSL lines, high-speed connectivity through technologies like VDSL and G.fast, addressing distance limitations, and comprehensive subscriber management capabilities."},{"question":"What types of DSLAMs exist?","answer":"There are different types of DSLAMs based on their deployment locations and architectures:\r\n
              \r\n \t
            1. Central Office DSLAM: Installed at the telephone exchange, it aggregates DSL connections from multiple customers in a specific geographic area.<\/li>\r\n \t
            2. Remote DSLAM: Placed closer to end-users in FTTN and FTTC architectures, reducing copper loop length for better connection quality.<\/li>\r\n \t
            3. Customer Premises DSLAM: Installed directly at customer premises, providing high-speed internet access to multiple users within a building.<\/li>\r\n<\/ol>"},{"question":"How is DSLAM used, and what are the associated problems and solutions?","answer":"DSLAMs are crucial in delivering high-speed broadband services. However, they face challenges like distance limitations, crosstalk interference, capacity constraints, and reliance on legacy copper infrastructure. Solutions include optimizing DSLAM placement, using advanced noise cancellation techniques, and transitioning to fiber-based technologies."},{"question":"How does DSLAM compare to other similar terms?","answer":"DSLAM is distinct from other terms like modems, broadband routers, and OLTs (Optical Line Terminals). DSLAM's main characteristics include aggregation, high-speed connectivity, and subscriber management."},{"question":"What does the future hold for DSLAM?","answer":"Future technologies are likely to shift towards fiber-based solutions like FTTH. While DSLAMs have been vital, fiber-optic connections offer higher speeds and reliability, potentially phasing out traditional DSLAM-based networks."},{"question":"How are proxy servers associated with DSLAM?","answer":"Proxy servers and DSLAMs serve different roles in the internet ecosystem. Proxy servers act as intermediaries, providing anonymity and security, while DSLAMs aggregate DSL connections for high-speed internet access. Both technologies contribute to enhancing the overall internet experience for users."}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477008","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477008\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/477009"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}