{"id":477684,"date":"2023-08-09T09:18:51","date_gmt":"2023-08-09T09:18:51","guid":{"rendered":""},"modified":"2023-09-05T11:15:14","modified_gmt":"2023-09-05T11:15:14","slug":"internet-telephony","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/internet-telephony\/","title":{"rendered":"\u0110i\u1ec7n tho\u1ea1i Internet"},"content":{"rendered":"<p>\u0110i\u1ec7n tho\u1ea1i Internet, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Tho\u1ea1i qua Giao th\u1ee9c Internet (VoIP), l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 \u0111\u1ed9t ph\u00e1 cho ph\u00e9p li\u00ean l\u1ea1c b\u1eb1ng gi\u1ecdng n\u00f3i qua Internet. N\u00f3 \u0111\u00e3 thay \u0111\u1ed5i c\u00e1ch m\u1ecdi ng\u01b0\u1eddi giao ti\u1ebfp tr\u00ean to\u00e0n c\u1ea7u, cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf linh ho\u1ea1t v\u00e0 hi\u1ec7u qu\u1ea3 v\u1ec1 m\u1eb7t chi ph\u00ed cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n tho\u1ea1i truy\u1ec1n th\u1ed1ng. \u0110i\u1ec7n tho\u1ea1i Internet chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u tho\u1ea1i analog th\u00e0nh c\u00e1c g\u00f3i d\u1eef li\u1ec7u s\u1ed1, sau \u0111\u00f3 \u0111\u01b0\u1ee3c truy\u1ec1n qua Internet v\u00e0 \u0111\u01b0\u1ee3c t\u1eadp h\u1ee3p l\u1ea1i \u1edf \u0111\u1ea7u nh\u1eadn. C\u00f4ng ngh\u1ec7 mang t\u00ednh c\u00e1ch m\u1ea1ng n\u00e0y kh\u00f4ng ch\u1ec9 thay \u0111\u1ed5i b\u1ed9 m\u1eb7t giao ti\u1ebfp c\u00e1 nh\u00e2n m\u00e0 c\u00f2n c\u00e1ch m\u1ea1ng h\u00f3a c\u00e1c doanh nghi\u1ec7p b\u1eb1ng c\u00e1ch cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p li\u00ean l\u1ea1c hi\u1ec7u qu\u1ea3 v\u00e0 gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a \u0111i\u1ec7n tho\u1ea1i Internet v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n<p>Kh\u00e1i ni\u1ec7m \u0111i\u1ec7n tho\u1ea1i Internet c\u00f3 t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 1970 khi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u l\u1ea7n \u0111\u1ea7u ti\u00ean th\u1eed nghi\u1ec7m m\u1ea1ng chuy\u1ec3n m\u1ea1ch g\u00f3i. Tuy nhi\u00ean, vi\u1ec7c tri\u1ec3n khai VoIP tr\u00ean th\u1ef1c t\u1ebf di\u1ec5n ra mu\u1ed9n h\u01a1n nhi\u1ec1u, v\u1edbi vi\u1ec7c Internet \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i v\u00e0o nh\u1eefng n\u0103m 1990. M\u1ed9t trong nh\u1eefng \u0111\u1ec1 c\u1eadp s\u1edbm nh\u1ea5t v\u1ec1 VoIP c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb n\u0103m 1991 khi ph\u1ea7n m\u1ec1m Speak Freely \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi Peter S. Yee. N\u00f3 cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng th\u1ef1c hi\u1ec7n cu\u1ed9c g\u1ecdi tho\u1ea1i qua Internet v\u00e0 \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t trong nh\u1eefng n\u1ed7 l\u1ef1c ti\u00ean phong trong l\u0129nh v\u1ef1c \u0111i\u1ec7n tho\u1ea1i Internet.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 \u0111i\u1ec7n tho\u1ea1i Internet<\/h2>\n<p>\u0110i\u1ec7n tho\u1ea1i Internet ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u tho\u1ea1i analog th\u00e0nh c\u00e1c g\u00f3i d\u1eef li\u1ec7u s\u1ed1. C\u00e1c g\u00f3i n\u00e0y \u0111\u01b0\u1ee3c truy\u1ec1n qua Internet b\u1eb1ng Giao th\u1ee9c Internet (IP). \u1ede \u0111\u1ea7u thu, c\u00e1c g\u00f3i \u0111\u01b0\u1ee3c t\u1eadp h\u1ee3p l\u1ea1i th\u00e0nh t\u00edn hi\u1ec7u tho\u1ea1i ban \u0111\u1ea7u, cho ph\u00e9p li\u00ean l\u1ea1c tho\u1ea1i theo th\u1eddi gian th\u1ef1c. Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m m\u1ed9t s\u1ed1 b\u01b0\u1edbc ch\u00ednh:<\/p>\n<ol>\n<li>\n<p><strong>Chuy\u1ec3n \u0111\u1ed5i t\u01b0\u01a1ng t\u1ef1 sang k\u1ef9 thu\u1eadt s\u1ed1<\/strong>: T\u00edn hi\u1ec7u gi\u1ecdng n\u00f3i t\u1eeb \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c micr\u00f4 truy\u1ec1n th\u1ed1ng \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i sang \u0111\u1ecbnh d\u1ea1ng k\u1ef9 thu\u1eadt s\u1ed1 b\u1eb1ng codec (Coder-Decoding).<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u00f3ng g\u00f3i<\/strong>: D\u1eef li\u1ec7u gi\u1ecdng n\u00f3i k\u1ef9 thu\u1eadt s\u1ed1 \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c g\u00f3i nh\u1ecf, m\u1ed7i g\u00f3i ch\u1ee9a m\u1ed9t ph\u1ea7n t\u00edn hi\u1ec7u gi\u1ecdng n\u00f3i c\u00f9ng v\u1edbi th\u00f4ng tin \u0111\u1ecba ch\u1ec9.<\/p>\n<\/li>\n<li>\n<p><strong>L\u1ed9 tr\u00ecnh<\/strong>: C\u00e1c g\u00f3i \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn qua Internet, \u0111i theo con \u0111\u01b0\u1eddng hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 \u0111\u1ebfn \u0111\u00edch.<\/p>\n<\/li>\n<li>\n<p><strong>T\u1eadp h\u1ee3p l\u1ea1i g\u00f3i<\/strong>: \u1ede \u0111\u1ea7u thu, c\u00e1c g\u00f3i \u0111\u01b0\u1ee3c t\u1eadp h\u1ee3p l\u1ea1i v\u00e0 d\u1eef li\u1ec7u s\u1ed1 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i tr\u1edf l\u1ea1i th\u00e0nh \u00e2m thanh analog b\u1eb1ng codec.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a \u0111i\u1ec7n tho\u1ea1i Internet. \u0110i\u1ec7n tho\u1ea1i Internet ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o.<\/h2>\n<p>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a \u0111i\u1ec7n tho\u1ea1i Internet bao g\u1ed3m nhi\u1ec1u th\u00e0nh ph\u1ea7n v\u00e0 giao th\u1ee9c kh\u00e1c nhau ho\u1ea1t \u0111\u1ed9ng c\u00f9ng nhau \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o li\u00ean l\u1ea1c th\u00f4ng su\u1ed1t:<\/p>\n<ol>\n<li>\n<p><strong>M\u00e1y kh\u00e1ch VoIP<\/strong>: Ph\u1ea7n m\u1ec1m ho\u1eb7c ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1eaft \u0111\u1ea7u v\u00e0 nh\u1eadn cu\u1ed9c g\u1ecdi VoIP. N\u00f3 c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ph\u1ea7n m\u1ec1m \u0111i\u1ec7n tho\u1ea1i m\u00e1y t\u00ednh, m\u1ed9t \u0111i\u1ec7n tho\u1ea1i VoIP v\u1eadt l\u00fd ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 m\u1ed9t \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng.<\/p>\n<\/li>\n<li>\n<p><strong>M\u00e1y ch\u1ee7 VoIP<\/strong>: M\u00e1y ch\u1ee7 trung t\u00e2m ch\u1ecbu tr\u00e1ch nhi\u1ec7m qu\u1ea3n l\u00fd cu\u1ed9c g\u1ecdi, \u0111\u1ecbnh tuy\u1ebfn v\u00e0 x\u1eed l\u00fd c\u00e1c ch\u1ee9c n\u0103ng thi\u1ebft y\u1ebfu kh\u00e1c.<\/p>\n<\/li>\n<li>\n<p><strong>Codec<\/strong>: Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u01b0\u1edbc \u0111\u00f3, codec m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 t\u00edn hi\u1ec7u \u00e2m thanh th\u00e0nh \u0111\u1ecbnh d\u1ea1ng k\u1ef9 thu\u1eadt s\u1ed1 v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. C\u00e1c codec kh\u00e1c nhau c\u00f3 m\u1ee9c \u0111\u1ed9 n\u00e9n v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh kh\u00e1c nhau.<\/p>\n<\/li>\n<li>\n<p><strong>Giao th\u1ee9c kh\u1edfi t\u1ea1o phi\u00ean (SIP)<\/strong>: SIP l\u00e0 m\u1ed9t giao th\u1ee9c truy\u1ec1n th\u00f4ng h\u1ed7 tr\u1ee3 thi\u1ebft l\u1eadp, ch\u1ea5m d\u1ee9t cu\u1ed9c g\u1ecdi v\u00e0 c\u00e1c t\u00ednh n\u0103ng c\u1ea7n thi\u1ebft kh\u00e1c trong m\u1ea1ng VoIP.<\/p>\n<\/li>\n<li>\n<p><strong>Giao th\u1ee9c truy\u1ec1n t\u1ea3i th\u1eddi gian th\u1ef1c (RTP)<\/strong>: RTP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u \u00e2m thanh v\u00e0 video qua m\u1ea1ng.<\/p>\n<\/li>\n<li>\n<p><strong>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng<\/strong>: C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Internet c\u01a1 b\u1ea3n, bao g\u1ed3m b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 m\u00e1y ch\u1ee7, \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n g\u00f3i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c th\u00f4ng su\u1ed1t.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a \u0111i\u1ec7n tho\u1ea1i Internet<\/h2>\n<p>\u0110i\u1ec7n tho\u1ea1i Internet c\u00f3 m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh s\u1ef1 l\u1ef1a ch\u1ecdn h\u1ea5p d\u1eabn cho giao ti\u1ebfp c\u00e1 nh\u00e2n v\u00e0 doanh nghi\u1ec7p:<\/p>\n<ol>\n<li>\n<p><strong>Hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/strong>: Cu\u1ed9c g\u1ecdi VoIP th\u01b0\u1eddng c\u00f3 gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng h\u01a1n so v\u1edbi cu\u1ed9c g\u1ecdi \u0111i\u1ec7n tho\u1ea1i truy\u1ec1n th\u1ed1ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi li\u00ean l\u1ea1c \u0111\u01b0\u1eddng d\u00e0i v\u00e0 qu\u1ed1c t\u1ebf.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00ednh linh ho\u1ea1t<\/strong>: VoIP cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng th\u1ef1c hi\u1ec7n cu\u1ed9c g\u1ecdi t\u1eeb nhi\u1ec1u thi\u1ebft b\u1ecb kh\u00e1c nhau, bao g\u1ed3m m\u00e1y t\u00ednh, \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 \u0111i\u1ec7n tho\u1ea1i VoIP chuy\u00ean d\u1ee5ng.<\/p>\n<\/li>\n<li>\n<p><strong>H\u1ed7 tr\u1ee3 \u0111a ph\u01b0\u01a1ng ti\u1ec7n<\/strong>: Ngo\u00e0i c\u00e1c cu\u1ed9c g\u1ecdi tho\u1ea1i, VoIP c\u00f3 th\u1ec3 x\u1eed l\u00fd c\u00e1c cu\u1ed9c g\u1ecdi video, cu\u1ed9c g\u1ecdi h\u1ed9i ngh\u1ecb v\u00e0 nh\u1eafn tin t\u1ee9c th\u1eddi, cung c\u1ea5p n\u1ec1n t\u1ea3ng li\u00ean l\u1ea1c to\u00e0n di\u1ec7n.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00edch h\u1ee3p v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 kh\u00e1c<\/strong>: H\u1ec7 th\u1ed1ng VoIP c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng t\u00edch h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kinh doanh kh\u00e1c nh\u01b0 email, c\u00f4ng c\u1ee5 qu\u1ea3n l\u00fd quan h\u1ec7 kh\u00e1ch h\u00e0ng (CRM), v.v.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00ednh n\u0103ng cu\u1ed9c g\u1ecdi n\u00e2ng cao<\/strong>: VoIP cung c\u1ea5p m\u1ed9t lo\u1ea1t c\u00e1c t\u00ednh n\u0103ng cu\u1ed9c g\u1ecdi nh\u01b0 chuy\u1ec3n ti\u1ebfp cu\u1ed9c g\u1ecdi, ch\u1edd cu\u1ed9c g\u1ecdi, th\u01b0 tho\u1ea1i v\u00e0 ghi \u00e2m cu\u1ed9c g\u1ecdi, n\u00e2ng cao hi\u1ec7u qu\u1ea3 li\u00ean l\u1ea1c t\u1ed5ng th\u1ec3.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i Internet<\/h2>\n<p>\u0110i\u1ec7n tho\u1ea1i Internet bao g\u1ed3m nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau, m\u1ed7i lo\u1ea1i ph\u1ee5c v\u1ee5 cho c\u00e1c nhu c\u1ea7u v\u00e0 t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i Internet ph\u1ed5 bi\u1ebfn:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110i\u1ec7n tho\u1ea1i m\u1ec1m<\/td>\n<td>C\u00e1c \u1ee9ng d\u1ee5ng d\u1ef1a tr\u00ean ph\u1ea7n m\u1ec1m \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t tr\u00ean m\u00e1y t\u00ednh ho\u1eb7c \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh.<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec7n tho\u1ea1i IP<\/td>\n<td>C\u00e1c thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 li\u00ean l\u1ea1c VoIP.<\/td>\n<\/tr>\n<tr>\n<td>VoIP di \u0111\u1ed9ng<\/td>\n<td>Cu\u1ed9c g\u1ecdi VoIP \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua thi\u1ebft b\u1ecb di \u0111\u1ed9ng b\u1eb1ng \u1ee9ng d\u1ee5ng ho\u1eb7c SIP di \u0111\u1ed9ng.<\/td>\n<\/tr>\n<tr>\n<td>VoIP d\u1ef1a tr\u00ean web<\/td>\n<td>D\u1ecbch v\u1ee5 VoIP c\u00f3 th\u1ec3 truy c\u1eadp th\u00f4ng qua tr\u00ecnh duy\u1ec7t web m\u00e0 kh\u00f4ng c\u1ea7n t\u1ea3i xu\u1ed1ng.<\/td>\n<\/tr>\n<tr>\n<td>VoIP \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean \u0111\u00e1m m\u00e2y<\/td>\n<td>D\u1ecbch v\u1ee5 VoIP \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 qu\u1ea3n l\u00fd b\u1edfi nh\u00e0 cung c\u1ea5p b\u00ean th\u1ee9 ba.<\/td>\n<\/tr>\n<tr>\n<td>VoIP t\u1ea1i ch\u1ed7<\/td>\n<td>H\u1ec7 th\u1ed1ng VoIP \u0111\u01b0\u1ee3c tri\u1ec3n khai v\u00e0 qu\u1ea3n l\u00fd trong m\u1ea1ng c\u1ee7a t\u1ed5 ch\u1ee9c.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i Internet, 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<p>\u0110i\u1ec7n tho\u1ea1i Internet t\u00ecm th\u1ea5y c\u00e1c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>S\u1ef1 giao ti\u1ebfp c\u00e1 nh\u00e2n<\/strong>: C\u00e1c c\u00e1 nh\u00e2n s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 VoIP \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c g\u1ecdi \u0111\u01b0\u1eddng d\u00e0i, tr\u00f2 chuy\u1ec7n video v\u1edbi b\u1ea1n b\u00e8 v\u00e0 gia \u0111\u00ecnh c\u0169ng nh\u01b0 li\u00ean l\u1ea1c qu\u1ed1c t\u1ebf v\u1edbi chi ph\u00ed h\u1ee3p l\u00fd.<\/p>\n<\/li>\n<li>\n<p><strong>Giao ti\u1ebfp kinh doanh<\/strong>: C\u00e1c doanh nghi\u1ec7p s\u1eed d\u1ee5ng c\u00e1c gi\u1ea3i ph\u00e1p VoIP \u0111\u1ec3 li\u00ean l\u1ea1c n\u1ed9i b\u1ed9 v\u00e0 b\u00ean ngo\u00e0i, cu\u1ed9c g\u1ecdi h\u1ed9i ngh\u1ecb, cu\u1ed9c h\u1ecdp \u1ea3o v\u00e0 gi\u1ea3m chi ph\u00ed li\u00ean l\u1ea1c.<\/p>\n<\/li>\n<li>\n<p><strong>Trung t\u00e2m cu\u1ed9c g\u1ecdi<\/strong>: Trung t\u00e2m cu\u1ed9c g\u1ecdi t\u1eadn d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i Internet \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 qu\u1ea3n l\u00fd s\u1ed1 l\u01b0\u1ee3ng cu\u1ed9c g\u1ecdi l\u1edbn.<\/p>\n<\/li>\n<\/ol>\n<p>Nh\u1eefng th\u00e1ch th\u1ee9c v\u1edbi \u0111i\u1ec7n tho\u1ea1i Internet bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>Ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 (QoS)<\/strong>: K\u1ebft n\u1ed1i Internet k\u00e9m c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn gi\u00e1n \u0111o\u1ea1n cu\u1ed9c g\u1ecdi v\u00e0 gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed9c g\u1ecdi. Gi\u1ea3i ph\u00e1p: S\u1eed d\u1ee5ng k\u1ebft n\u1ed1i Internet m\u1ea1nh m\u1ebd v\u00e0 s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt Ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 (QoS) \u0111\u1ec3 \u01b0u ti\u00ean c\u00e1c g\u00f3i tho\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ed1i quan t\u00e2m v\u1ec1 b\u1ea3o m\u1eadt<\/strong>: Cu\u1ed9c g\u1ecdi VoIP d\u1ec5 b\u1ecb nghe l\u00e9n v\u00e0 vi ph\u1ea1m d\u1eef li\u1ec7u. Gi\u1ea3i ph\u00e1p: K\u1ef9 thu\u1eadt m\u00e3 h\u00f3a v\u00e0 M\u1ea1ng ri\u00eang \u1ea3o (VPN) c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n<li>\n<p><strong>Cu\u1ed9c g\u1ecdi kh\u1ea9n c\u1ea5p<\/strong>: Kh\u00f4ng gi\u1ed1ng nh\u01b0 \u0111i\u1ec7n tho\u1ea1i c\u1ed1 \u0111\u1ecbnh truy\u1ec1n th\u1ed1ng, VoIP kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng cung c\u1ea5p th\u00f4ng tin v\u1ecb tr\u00ed ch\u00ednh x\u00e1c trong c\u00e1c cu\u1ed9c g\u1ecdi kh\u1ea9n c\u1ea5p. Gi\u1ea3i ph\u00e1p: Nh\u00e0 cung c\u1ea5p VoIP ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh \u0111i\u1ec7n tho\u1ea1i Internet v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0110\u1eb7c tr\u01b0ng<\/th>\n<th>\u0110i\u1ec7n tho\u1ea1i Internet<\/th>\n<th>\u0110i\u1ec7n tho\u1ea1i truy\u1ec1n th\u1ed1ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng<\/td>\n<td>D\u1ef1a v\u00e0o Internet<\/td>\n<td>S\u1eed d\u1ee5ng \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n tho\u1ea1i truy\u1ec1n th\u1ed1ng<\/td>\n<\/tr>\n<tr>\n<td>Tr\u1ecb gi\u00e1<\/td>\n<td>N\u00f3i chung l\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed<\/td>\n<td>C\u00f3 th\u1ec3 \u0111\u1eaft h\u01a1n<\/td>\n<\/tr>\n<tr>\n<td>T\u00ednh c\u01a1 \u0111\u1ed9ng<\/td>\n<td>Linh ho\u1ea1t v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi thi\u1ebft b\u1ecb di \u0111\u1ed9ng<\/td>\n<td>T\u00f9y ch\u1ecdn di chuy\u1ec3n h\u1ea1n ch\u1ebf<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1eb7c tr\u01b0ng<\/td>\n<td>Cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng cu\u1ed9c g\u1ecdi n\u00e2ng cao<\/td>\n<td>T\u00ednh n\u0103ng b\u1ed5 sung h\u1ea1n ch\u1ebf<\/td>\n<\/tr>\n<tr>\n<td>Thi\u1ebft l\u1eadp v\u00e0 b\u1ea3o tr\u00ec<\/td>\n<td>Thi\u1ebft l\u1eadp v\u00e0 b\u1ea3o tr\u00ec d\u1ec5 d\u00e0ng h\u01a1n<\/td>\n<td>Y\u00eau c\u1ea7u thi\u1ebft l\u1eadp ph\u1ee9c t\u1ea1p h\u01a1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Tri\u1ec3n v\u1ecdng v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn \u0111i\u1ec7n tho\u1ea1i Internet<\/h2>\n<p>T\u01b0\u01a1ng lai c\u1ee7a \u0111i\u1ec7n tho\u1ea1i Internet \u0111\u1ea7y h\u1ee9a h\u1eb9n v\u1edbi m\u1ed9t s\u1ed1 c\u00f4ng ngh\u1ec7 th\u00fa v\u1ecb s\u1eafp ra m\u1eaft:<\/p>\n<ol>\n<li>\n<p><strong>T\u00edch h\u1ee3p 5G<\/strong>: S\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00f4ng ngh\u1ec7 5G s\u1ebd n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed9c g\u1ecdi, gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 h\u1ed7 tr\u1ee3 s\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i \u0111\u1ed3ng th\u1eddi cao h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>Tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o<\/strong>: Tr\u1ee3 l\u00fd gi\u1ecdng n\u00f3i \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng AI v\u00e0 x\u1eed l\u00fd cu\u1ed9c g\u1ecdi t\u1ef1 \u0111\u1ed9ng s\u1ebd c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng v\u00e0 h\u1ee3p l\u00fd h\u00f3a ho\u1ea1t \u0111\u1ed9ng c\u1ee7a trung t\u00e2m cu\u1ed9c g\u1ecdi.<\/p>\n<\/li>\n<li>\n<p><strong>Th\u1ef1c t\u1ebf t\u0103ng c\u01b0\u1eddng (AR)<\/strong>: Giao ti\u1ebfp \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi AR s\u1ebd mang l\u1ea1i tr\u1ea3i nghi\u1ec7m g\u1ecdi \u0111i\u1ec7n video t\u01b0\u01a1ng t\u00e1c v\u00e0 phong ph\u00fa h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>Chu\u1ed7i kh\u1ed1i cho b\u1ea3o m\u1eadt<\/strong>: C\u00f4ng ngh\u1ec7 chu\u1ed7i kh\u1ed1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o h\u1ec7 th\u1ed1ng VoIP \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 b\u1ea3o v\u1ec7 ch\u1ed1ng gian l\u1eadn.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi \u0111i\u1ec7n tho\u1ea1i Internet<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a \u0111i\u1ec7n tho\u1ea1i Internet. \u0110\u00e2y l\u00e0 c\u00e1ch ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft:<\/p>\n<ol>\n<li>\n<p><strong>Qu\u1ea3n l\u00fd giao th\u00f4ng<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng VoIP tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7, t\u1ed1i \u01b0u h\u00f3a ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed9c g\u1ecdi v\u00e0 gi\u1ea3m t\u1eafc ngh\u1ebdn.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ecf qua t\u01b0\u1eddng l\u1eeda<\/strong>: \u1ede nh\u1eefng khu v\u1ef1c c\u00f3 t\u01b0\u1eddng l\u1eeda h\u1ea1n ch\u1ebf, m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 gi\u00fap v\u01b0\u1ee3t qua nh\u1eefng h\u1ea1n ch\u1ebf n\u00e0y, cho ph\u00e9p c\u00e1c cu\u1ed9c g\u1ecdi VoIP k\u1ebft n\u1ed1i tho\u1ea3i m\u00e1i.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ea3o v\u1ec7<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung, b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng VoIP kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng \u0111\u1ed9c h\u1ea1i v\u00e0 truy c\u1eadp tr\u00e1i ph\u00e9p.<\/p>\n<\/li>\n<li>\n<p><strong>\u1ea9n danh<\/strong>: C\u00e1c cu\u1ed9c g\u1ecdi VoIP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1ea9n danh h\u01a1n th\u00f4ng qua m\u00e1y ch\u1ee7 proxy, b\u1ed5 sung th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n<\/ol>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 \u0111i\u1ec7n tho\u1ea1i Internet, h\u00e3y xem x\u00e9t kh\u00e1m ph\u00e1 c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/www.fcc.gov\/consumers\/guides\/voip-basics\" target=\"_new\" rel=\"noopener nofollow\">Kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n v\u1ec1 VoIP \u2013 \u1ee6y ban Truy\u1ec1n th\u00f4ng Li\u00ean bang<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/support\/docs\/voice\/voice-quality\/7934-basicsip.html\" target=\"_new\" rel=\"noopener nofollow\">T\u00ecm hi\u1ec3u Giao th\u1ee9c Tho\u1ea1i qua Internet (VoIP) \u2013 Cisco<\/a><\/li>\n<li><a href=\"https:\/\/www.techopedia.com\/2\/28253\/voip\/internet-telephony-advantages-and-disadvantages\" target=\"_new\" rel=\"noopener nofollow\">\u0110i\u1ec7n tho\u1ea1i Internet: \u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m \u2013 Techopedia<\/a><\/li>\n<\/ol>\n<p>T\u00f3m l\u1ea1i, \u0111i\u1ec7n tho\u1ea1i Internet \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a c\u00e1ch ch\u00fang ta giao ti\u1ebfp, cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p li\u00ean l\u1ea1c hi\u1ec7u qu\u1ea3, linh ho\u1ea1t v\u00e0 gi\u00e0u t\u00ednh n\u0103ng. Khi c\u00f4ng ngh\u1ec7 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, ch\u00fang ta c\u00f3 th\u1ec3 mong \u0111\u1ee3i nhi\u1ec1u c\u1ea3i ti\u1ebfn h\u01a1n n\u1eefa trong l\u0129nh v\u1ef1c VoIP, gi\u00fap m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 li\u00ean l\u1ea1c d\u1ec5 d\u00e0ng v\u00e0 li\u1ec1n m\u1ea1ch h\u01a1n.<\/p>","protected":false},"featured_media":477685,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477684","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Internet Telephony: Revolutionizing Communication<\/mark>","faq_items":[{"question":"What is Internet telephony or VoIP?","answer":"<p>Internet telephony, also known as Voice over Internet Protocol (VoIP), is a technology that allows voice communication over the Internet. It converts analog voice signals into digital data packets, which are transmitted over the Internet and reassembled at the receiving end to enable real-time voice communication.<\/p>"},{"question":"How did Internet telephony originate?","answer":"<p>The concept of Internet telephony dates back to the 1970s, but practical implementation came in the 1990s with the widespread adoption of the Internet. One of the earliest mentions was in 1991 when the Speak Freely software allowed users to make voice calls over the Internet.<\/p>"},{"question":"How does Internet telephony work?","answer":"<p>Internet telephony involves converting analog voice signals into digital data packets, packetizing them, routing them through the Internet, and then reassembling them at the receiver's end. It relies on VoIP clients, VoIP servers, codecs, SIP, RTP, and the Internet infrastructure.<\/p>"},{"question":"What are the key features of Internet telephony?","answer":"<p>Internet telephony offers cost-effectiveness, versatility, multimedia support, integration with other services, and an array of advanced call features.<\/p>"},{"question":"What are the types of Internet telephony?","answer":"<p>There are several types of Internet telephony, including softphones, IP phones, mobile VoIP, web-based VoIP, cloud-hosted VoIP, and on-premises VoIP.<\/p>"},{"question":"How is Internet telephony used?","answer":"<p>Internet telephony finds applications in personal communication, business communication, and call centers. It enables cost-effective long-distance calls, video chats, virtual meetings, and more.<\/p>"},{"question":"What are the challenges and solutions related to Internet telephony?","answer":"<p>Challenges include quality of service issues, security concerns, and limitations with emergency calls. Solutions involve using a robust internet connection, encryption techniques, and compliance with regulations.<\/p>"},{"question":"How does Internet telephony compare with traditional telephony?","answer":"<p>Internet telephony operates through the Internet, making it more cost-effective and versatile compared to traditional telephony, which relies on traditional telephone lines.<\/p>"},{"question":"What are the future perspectives and technologies related to Internet telephony?","answer":"<p>The future of Internet telephony includes integration with 5G technology, the use of artificial intelligence for call handling, augmented reality for interactive video calls, and the potential use of blockchain for added security.<\/p>"},{"question":"How are proxy servers associated with Internet telephony?","answer":"<p>Proxy servers can enhance Internet telephony by managing traffic, bypassing restrictive firewalls, providing an additional security layer, and adding an extra layer of anonymity to VoIP calls.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477684","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\/477684\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/477685"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}