{"id":478490,"date":"2023-08-09T09:33:31","date_gmt":"2023-08-09T09:33:31","guid":{"rendered":""},"modified":"2023-09-05T11:16:54","modified_gmt":"2023-09-05T11:16:54","slug":"power-over-internet","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/power-over-internet\/","title":{"rendered":"C\u1ea5p ngu\u1ed3n qua internet"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u<\/h2>\n

C\u1ea5p ngu\u1ed3n qua Internet, th\u01b0\u1eddng \u0111\u01b0\u1ee3c vi\u1ebft t\u1eaft l\u00e0 PoI, l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 mang t\u00ednh c\u00e1ch m\u1ea1ng cho ph\u00e9p truy\u1ec1n t\u1ea3i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 d\u1eef li\u1ec7u qua c\u00f9ng m\u1ed9t c\u00e1p Ethernet, cung c\u1ea5p gi\u1ea3i ph\u00e1p h\u1ee3p l\u00fd v\u00e0 hi\u1ec7u qu\u1ea3 cho nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau. S\u1ef1 t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch gi\u1eefa ngu\u1ed3n \u0111i\u1ec7n v\u00e0 d\u1eef li\u1ec7u n\u00e0y \u0111\u00e3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 c\u00e1ch th\u1ee9c c\u1ea5p ngu\u1ed3n v\u00e0 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb trong th\u1eddi \u0111\u1ea1i k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n

L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a quy\u1ec1n l\u1ef1c tr\u00ean Internet<\/h2>\n

Kh\u00e1i ni\u1ec7m C\u1ea5p ngu\u1ed3n qua Internet c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 1990 khi c\u00f4ng ngh\u1ec7 Ethernet b\u1eaft \u0111\u1ea7u tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn trong c\u00e1c m\u1ea1ng c\u1ee5c b\u1ed9 (LAN). Khi nhu c\u1ea7u v\u1ec1 c\u00e1c thi\u1ebft b\u1ecb n\u1ed1i m\u1ea1ng t\u0103ng l\u00ean, nhu c\u1ea7u cung c\u1ea5p \u0111i\u1ec7n thu\u1eadn ti\u1ec7n h\u01a1n v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n c\u0169ng xu\u1ea5t hi\u1ec7n. L\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn C\u1ea5p ngu\u1ed3n qua Internet c\u00f3 th\u1ec3 l\u00e0 do m\u1ed9t b\u00e0i b\u00e1o c\u00f3 ti\u00eau \u0111\u1ec1 \u201cCung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng v\u00e0 d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng c\u00e1p LAN hi\u1ec7n c\u00f3\u201d do Cisco Systems xu\u1ea5t b\u1ea3n n\u0103m 1998, \u0111\u1eb7t n\u1ec1n m\u00f3ng cho s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng C\u1ea5p ngu\u1ed3n qua Internet.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 C\u1ea5p ngu\u1ed3n qua Internet<\/h2>\n

C\u1ea5p ngu\u1ed3n qua Internet li\u00ean quan \u0111\u1ebfn vi\u1ec7c truy\u1ec1n t\u1ea3i d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) c\u00f9ng v\u1edbi t\u00edn hi\u1ec7u d\u1eef li\u1ec7u th\u00f4ng qua c\u00e1p Ethernet. C\u00f4ng ngh\u1ec7 n\u00e0y tu\u00e2n th\u1ee7 c\u00e1c quy \u01b0\u1edbc v\u1ec1 c\u00e1p m\u1ea1ng ti\u00eau chu\u1ea9n, ch\u1eb3ng h\u1ea1n nh\u01b0 Lo\u1ea1i 5 (Cat5) v\u00e0 c\u00e1c phi\u00ean b\u1ea3n ti\u1ebfp theo c\u1ee7a n\u00f3. Thi\u1ebft b\u1ecb t\u00ecm ngu\u1ed3n \u0111i\u1ec7n (PSE) v\u00e0 Thi\u1ebft b\u1ecb c\u1ea5p ngu\u1ed3n (PD) l\u00e0 hai th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu c\u1ee7a h\u1ec7 th\u1ed1ng C\u1ea5p ngu\u1ed3n qua Internet.<\/p>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a quy\u1ec1n l\u1ef1c qua Internet<\/h2>\n

C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n qua Internet<\/h3>\n

C\u1ea5p ngu\u1ed3n qua Internet ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc s\u1eed d\u1ee5ng c\u00e1c c\u1eb7p d\u00e2y ch\u01b0a s\u1eed d\u1ee5ng trong c\u00e1p Ethernet \u0111\u1ec3 truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng. C\u00e1c PSE, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ed9 chuy\u1ec3n m\u1ea1ch ho\u1eb7c b\u1ed9 chuy\u1ec3n m\u1ea1ch C\u1ea5p ngu\u1ed3n qua Internet, c\u1ea5p ngu\u1ed3n v\u00e0o c\u00e1p Ethernet, trong khi c\u00e1c PD, ch\u1eb3ng h\u1ea1n nh\u01b0 camera IP, \u0111i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y v\u00e0 \u0111i\u1ec7n tho\u1ea1i VoIP, l\u1ea5y ngu\u1ed3n t\u1eeb c\u00f9ng m\u1ed9t c\u00e1p \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

Qu\u00e1 tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft trong c\u00e1c b\u01b0\u1edbc sau:<\/p>\n

    \n
  1. PSE ph\u00e1t hi\u1ec7n xem thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i c\u00f3 h\u1ed7 tr\u1ee3 C\u1ea5p ngu\u1ed3n qua Internet hay kh\u00f4ng.<\/li>\n
  2. Sau khi PSE x\u00e1c nh\u1eadn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, n\u00f3 s\u1ebd \u0111\u00e0m ph\u00e1n c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ngu\u1ed3n \u0111i\u1ec7n v\u1edbi PD.<\/li>\n
  3. Ngu\u1ed3n \u0111i\u1ec7n sau \u0111\u00f3 \u0111\u01b0\u1ee3c truy\u1ec1n qua c\u00e1p Ethernet \u0111\u1ec3 c\u1ea5p ngu\u1ed3n cho thi\u1ebft b\u1ecb.<\/li>\n<\/ol>\n

    Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a c\u1ea5p ngu\u1ed3n qua Internet<\/h2>\n

    C\u1ea5p ngu\u1ed3n qua Internet cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn h\u1ea5p d\u1eabn \u0111\u1ec3 c\u1ea5p ngu\u1ed3n cho c\u00e1c thi\u1ebft b\u1ecb n\u1ed1i m\u1ea1ng:<\/p>\n

      \n
    1. \n

      C\u00e0i \u0111\u1eb7t \u0111\u01a1n gi\u1ea3n<\/strong>: PoI lo\u1ea1i b\u1ecf nhu c\u1ea7u s\u1eed d\u1ee5ng c\u00e1p ngu\u1ed3n ri\u00eang bi\u1ec7t, gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u00e0 chi ph\u00ed l\u1eafp \u0111\u1eb7t.<\/p>\n<\/li>\n

    2. \n

      Qu\u1ea3n l\u00fd n\u0103ng l\u01b0\u1ee3ng t\u1eadp trung<\/strong>: V\u1edbi PoI, vi\u1ec7c qu\u1ea3n l\u00fd ngu\u1ed3n tr\u1edf n\u00ean t\u1eadp trung, cho ph\u00e9p gi\u00e1m s\u00e1t v\u00e0 \u0111i\u1ec1u khi\u1ec3n c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n<\/li>\n

    3. \n

      T\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/strong>: PoI cho ph\u00e9p d\u1ec5 d\u00e0ng di chuy\u1ec3n ho\u1eb7c b\u1ed5 sung c\u00e1c thi\u1ebft b\u1ecb m\u00e0 kh\u00f4ng b\u1ecb r\u00e0ng bu\u1ed9c b\u1edfi c\u00e1c \u1ed5 c\u1eafm \u0111i\u1ec7n g\u1ea7n \u0111\u00f3.<\/p>\n<\/li>\n

    4. \n

      Hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/strong>: B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p d\u1eef li\u1ec7u v\u00e0 truy\u1ec1n t\u1ea3i \u0111i\u1ec7n, PoI gi\u1ea3m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng t\u1ed5ng th\u1ec3.<\/p>\n<\/li>\n<\/ol>\n

      C\u00e1c lo\u1ea1i ngu\u1ed3n \u0111i\u1ec7n qua Internet<\/h2>\n

      C\u00f4ng ngh\u1ec7 trao quy\u1ec1n tr\u00ean Internet \u0111\u00e3 ph\u00e1t tri\u1ec3n qua nhi\u1ec1u n\u0103m, d\u1eabn \u0111\u1ebfn nhi\u1ec1u ti\u00eau chu\u1ea9n v\u00e0 c\u00e1ch tri\u1ec3n khai kh\u00e1c nhau. M\u1ed9t s\u1ed1 lo\u1ea1i PoI ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0:<\/p>\n\n\n\n\n\n\n\n
      Ti\u00eau chu\u1ea9n PoI<\/th>\nCung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng t\u1ed1i \u0111a<\/th>\nTi\u00eau chu\u1ea9n Ethernet \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/th>\n<\/tr>\n<\/thead>\n
      IEEE 802.3af<\/td>\nL\u00ean t\u1edbi 15,4W<\/td>\n10\/100 Mb\/gi\u00e2y<\/td>\n<\/tr>\n
      IEEE 802.3at<\/td>\nL\u00ean \u0111\u1ebfn 30W<\/td>\n10\/100\/1000 Mb\/gi\u00e2y<\/td>\n<\/tr>\n
      IEEE 802.3bt<\/td>\nL\u00ean t\u1edbi 100W<\/td>\n10\/100\/1000 Mb\/gi\u00e2y<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng ngu\u1ed3n qua Internet: V\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n

      C\u1ea5p ngu\u1ed3n qua Internet t\u00ecm th\u1ea5y c\u00e1c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh kh\u00e1c nhau, t\u1eeb vi\u1ec5n th\u00f4ng \u0111\u1ebfn h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt. Tuy nhi\u00ean, m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c nh\u1ea5t \u0111\u1ecbnh c\u00f3 th\u1ec3 ph\u00e1t sinh:<\/p>\n

      V\u1ea5n \u0111\u1ec1<\/strong>: Gi\u1edbi h\u1ea1n kho\u1ea3ng c\u00e1ch \u2013 Kh\u1ea3 n\u0103ng c\u1ea5p ngu\u1ed3n qua Internet gi\u1ea3m theo chi\u1ec1u d\u00e0i c\u00e1p.<\/p>\n

      Gi\u1ea3i ph\u00e1p<\/strong>: S\u1eed d\u1ee5ng c\u00e1c b\u1ed9 m\u1edf r\u1ed9ng c\u1ea5p ngu\u1ed3n qua Internet ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb t\u1ea7m trung \u0111\u1ec3 kh\u1eafc ph\u1ee5c c\u00e1c gi\u1edbi h\u1ea1n v\u1ec1 kho\u1ea3ng c\u00e1ch.<\/p>\n

      V\u1ea5n \u0111\u1ec1<\/strong>: S\u1ef1 c\u1ed1 t\u01b0\u01a1ng th\u00edch \u2013 C\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng c\u0169 h\u01a1n c\u00f3 th\u1ec3 kh\u00f4ng h\u1ed7 tr\u1ee3 PoI.<\/p>\n

      Gi\u1ea3i ph\u00e1p<\/strong>: Tri\u1ec3n khai b\u1ed9 \u0111i\u1ec1u h\u1ee3p PoI ho\u1eb7c n\u00e2ng c\u1ea5p thi\u1ebft b\u1ecb l\u00ean phi\u00ean b\u1ea3n h\u1ed7 tr\u1ee3 PoI.<\/p>\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\n\n\n\n\n\n\n
      Thu\u1eadt ng\u1eef<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
      C\u1ea5p ngu\u1ed3n qua Ethernet<\/td>\nM\u1ed9t thu\u1eadt ng\u1eef thay th\u1ebf cho Power over Internet, \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng t\u1ef1.<\/td>\n<\/tr>\n
      C\u1ea5p ngu\u1ed3n qua USB<\/td>\nM\u1ed9t c\u00f4ng ngh\u1ec7 cho ph\u00e9p truy\u1ec1n ngu\u1ed3n v\u00e0 d\u1eef li\u1ec7u qua c\u00e1p Universal Serial Bus (USB).<\/td>\n<\/tr>\n
      Truy\u1ec1n t\u1ea3i \u0111i\u1ec7n kh\u00f4ng d\u00e2y<\/td>\nKh\u1ea3 n\u0103ng truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n t\u1edbi c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng d\u00e2y, th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai<\/h2>\n

      T\u01b0\u01a1ng lai c\u1ee7a C\u1ea5p ngu\u1ed3n qua Internet c\u00f3 v\u1ebb \u0111\u1ea7y h\u1ee9a h\u1eb9n v\u1edbi nh\u1eefng nghi\u00ean c\u1ee9u \u0111ang di\u1ec5n ra nh\u1eb1m t\u0103ng kh\u1ea3 n\u0103ng cung c\u1ea5p \u0111i\u1ec7n, c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c ti\u00eau chu\u1ea9n PoI ti\u00ean ti\u1ebfn cho c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i. Ch\u00fang ta c\u00f3 th\u1ec3 mong \u0111\u1ee3i \u0111\u01b0\u1ee3c th\u1ea5y s\u1ef1 t\u00edch h\u1ee3p m\u1ea1nh m\u1ebd h\u01a1n n\u1eefa v\u1ec1 n\u0103ng l\u01b0\u1ee3ng v\u00e0 d\u1eef li\u1ec7u trong Internet of Things (IoT) v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng th\u00e0nh ph\u1ed1 th\u00f4ng minh.<\/p>\n

      C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi ngu\u1ed3n qua Internet<\/h2>\n

      M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c qu\u1ea3n l\u00fd v\u00e0 b\u1ea3o m\u1eadt c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng, \u0111\u1eb7c bi\u1ec7t khi Power over Internet \u0111\u01b0\u1ee3c tri\u1ec3n khai trong c\u00e1c m\u1ea1ng quy m\u00f4 l\u1edbn. M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u, n\u1ed9i dung b\u1ed9 \u0111\u1ec7m v\u00e0 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda ti\u1ec1m \u1ea9n, do \u0111\u00f3 n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh b\u1ea3o m\u1eadt t\u1ed5ng th\u1ec3 c\u1ee7a vi\u1ec7c tri\u1ec3n khai C\u1ea5p ngu\u1ed3n qua Internet.<\/p>\n

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

      \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 C\u1ea5p ngu\u1ed3n qua Internet, vui l\u00f2ng tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

        \n
      1. Ti\u00eau chu\u1ea9n IEEE 802.3 cho c\u1ea5p ngu\u1ed3n qua Internet<\/a><\/li>\n
      2. C\u1ea5p ngu\u1ed3n qua Internet \u2013 H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n<\/a><\/li>\n
      3. C\u1ea5p ngu\u1ed3n qua Internet so v\u1edbi c\u1ea5p ngu\u1ed3n qua Ethernet: S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?<\/a><\/li>\n
      4. Xu h\u01b0\u1edbng t\u01b0\u01a1ng lai v\u1ec1 quy\u1ec1n l\u1ef1c qua c\u00f4ng ngh\u1ec7 Internet<\/a><\/li>\n<\/ol>\n

        T\u00f3m l\u1ea1i, Power over Internet \u0111\u00e3 n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t c\u00f4ng ngh\u1ec7 thay \u0111\u1ed5i cu\u1ed9c ch\u01a1i, c\u00e1ch m\u1ea1ng h\u00f3a c\u00e1ch th\u1ee9c c\u1ea5p ngu\u1ed3n v\u00e0 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb. S\u1ef1 t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch gi\u1eefa ngu\u1ed3n v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u c\u1ee7a n\u00f3 \u0111\u00e3 mang l\u1ea1i nh\u1eefng l\u1ee3i th\u1ebf \u0111\u00e1ng k\u1ec3, \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c c\u00e0i \u0111\u1eb7t, gi\u1ea3m chi ph\u00ed v\u00e0 n\u00e2ng cao t\u00ednh linh ho\u1ea1t c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb n\u1ed1i m\u1ea1ng. Khi c\u00f4ng ngh\u1ec7 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, ti\u1ec1m n\u0103ng c\u1ea5p ngu\u1ed3n qua Internet \u0111\u1ec3 trao quy\u1ec1n cho th\u1ebf gi\u1edbi k\u1ef9 thu\u1eadt s\u1ed1 s\u1ebd ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n.<\/p>","protected":false},"featured_media":478491,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478490","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Power over Internet: Empowering the Digital World<\/mark>","faq_items":[{"question":"What is Power over Internet (PoI)?","answer":"

        Power over Internet (PoI) is a revolutionary technology that enables the transmission of electrical power and data over the same Ethernet cable. It streamlines the process of powering networked devices, eliminating the need for separate power cables and offering a cost-effective solution for various applications.<\/p>"},{"question":"How did Power over Internet originate?","answer":"

        The concept of Power over Internet can be traced back to the early 1990s when Ethernet technology gained popularity in local area networks (LANs). The first mention of PoI can be attributed to a 1998 paper by Cisco Systems, titled \"Power and Data Delivery Using Existing LAN Cabling,\" which laid the groundwork for its development.<\/p>"},{"question":"How does Power over Internet work?","answer":"

        Power over Internet operates by transmitting direct current (DC) electrical power alongside data signals through Ethernet cables. It involves Power Sourcing Equipment (PSE) injecting power into the cable, and Powered Devices (PDs) drawing power from the same cable to operate.<\/p>"},{"question":"What are the key features of Power over Internet?","answer":"

        Power over Internet offers several key features, including simplified installation, centralized power management, flexibility, scalability, and cost-effectiveness. These features make it an attractive choice for powering and connecting networked devices.<\/p>"},{"question":"What types of Power over Internet exist?","answer":"

        There are different PoI standards based on the amount of power they can deliver and the supported Ethernet standards. Some common types include IEEE 802.3af (up to 15.4W), IEEE 802.3at (up to 30W), and IEEE 802.3bt (up to 100W).<\/p>"},{"question":"How can I use Power over Internet?","answer":"

        Power over Internet finds applications in various industries, ranging from telecommunications to security systems. However, it's essential to be aware of potential challenges such as distance limitations and compatibility issues. Solutions include using PoI extenders, midspan devices, or upgrading to PoI-enabled devices.<\/p>"},{"question":"How does Power over Internet compare to other technologies?","answer":"

        Power over Internet is similar to Power over Ethernet (PoE) in that both transmit power and data over Ethernet cables. However, PoE has different power delivery capabilities and supported Ethernet standards. Power over USB and wireless power transfer are other related technologies that differ in their transmission methods.<\/p>"},{"question":"What does the future hold for Power over Internet?","answer":"

        The future of Power over Internet looks promising, with ongoing research to increase power delivery capabilities, improve energy efficiency, and develop advanced PoI standards for emerging technologies. Expect greater integration of PoI in the Internet of Things (IoT) and smart city applications.<\/p>"},{"question":"How are proxy servers associated with Power over Internet?","answer":"

        Proxy servers play a crucial role in managing and securing network connections, especially in large-scale PoI implementations. They optimize data transmission, cache content, and protect devices from potential threats, enhancing overall PoI performance and security.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/478490","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\/478490\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/478491"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=478490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}