{"id":2794,"date":"2013-03-15T17:21:04","date_gmt":"2013-03-15T10:21:04","guid":{"rendered":"http:\/\/snt.com.vn\/blog\/?p=2794"},"modified":"2013-03-15T17:21:04","modified_gmt":"2013-03-15T10:21:04","slug":"cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99","status":"publish","type":"post","link":"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/","title":{"rendered":"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9"},"content":{"rendered":"

C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh bao g\u1ed3m: \u0110i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1, \u0111i\u1ec7n tho\u1ea1i\u00a0k\u0129 thu\u1eadt s\u1ed1<\/a>, \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng d\u00e2y, \u0111i\u1ec7n tho\u1ea1i IP<\/a>, \u0111i\u1ec7n tho\u1ea1i SIP<\/a>. M\u1ed7i lo\u1ea1i \u0111\u1ec1u c\u00f3 nh\u1eefng \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m kh\u00e1c nhau, t\u00f9y v\u00e0o m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng m\u00e0 \u0111i\u1ec7n tho\u1ea1i n\u00e0o s\u1ebd ph\u00f9 h\u1ee3p.<\/p>\n

1. \u00a0\u0110i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1<\/span><\/strong>
\n <\/strong>
\n \u0110\u1eb7c <\/strong>\u0111<\/strong>i\u1ec3m<\/strong>:
\n M\u1ed7i m\u1ed9t \u0111i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t c\u1ed5ng tr\u00ean t\u1ed5ng \u0111\u00e0i<\/a>. V\u1ec1 truy\u1ec1n d\u1eabn \u0111i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1 s\u1eed d\u1ee5ng m\u1ed9t \u0111\u00f4i c\u00e1p \u0111i\u1ec7n tho\u1ea1i (c\u00e1p \u0111\u1ed3ng \u0111\u01b0\u1eddng k\u00ednh l\u00f5i t\u1eeb 0,4 \u0111\u1ebfn 0,6 mm). T\u00f9y thu\u1ed9c v\u00e0o \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a c\u00e1p \u0111\u1ed3ng m\u00e0 kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a cho ph\u00e9p gi\u1eefa t\u1ed5ng \u0111\u00e0i<\/a> ri\u00eang v\u00e0 \u0111i\u1ec7n tho\u1ea1i l\u00e0 kh\u00e1c nhau. Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a t\u1eeb t\u1ed5ng \u0111\u00e0i<\/a> t\u1edbi \u0111i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1 c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 1700m (t\u01b0\u01a1ng \u1ee9ng \u0111\u01b0\u1eddng k\u00ednh l\u00f5i c\u00e1p \u0111\u1ed3ng l\u00e0 0,6mm). T\u00edn hi\u1ec7u ti\u1ebfng n\u00f3i truy\u1ec1n \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh\u00a0t\u01b0\u01a1ng t\u1ef1 l\u00e0 d\u1ea1ng t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1.<\/p>\n

\"dfdf\"<\/p>\n

\u01afu <\/strong>\u0111<\/strong>i\u1ec3m<\/strong>:
\n \u01afu \u0111i\u1ec3m c\u1ee7a \u0111i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1 \u0111\u00f3 l\u00e0 s\u1ef1 \u0111\u01a1n gi\u1ea3n v\u00e0 ph\u1ed5 bi\u1ebfn, c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 tho\u1ea1i c\u0169ng cung c\u1ea5p \u0111i\u1ec7n tho\u1ea1i n\u00e0y cho kh\u00e1ch h\u00e0ng. \u0110i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1 r\u1ea5t \u0111a d\u1ea1ng mang \u0111\u1ebfn cho kh\u00e1ch h\u00e0ng r\u1ea5t nhi\u1ec1u l\u1ef1a ch\u1ecdn. Chi ph\u00ed \u0111\u1ea7u t\u01b0 \u0111i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1 s\u1ebd th\u1ea5p h\u01a1n so v\u1edbi c\u00e1c \u0111i\u1ec7n tho\u1ea1i kh\u00e1c.<\/p>\n

Nh\u01b0\u1ee3c <\/strong>\u0111<\/strong>i\u1ec3m:
\n <\/strong>Do t\u00edn hi\u1ec7u ti\u1ebfng n\u00f3i truy\u1ec1n qua \u0111i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1 l\u00e0 d\u1ea1ng t\u01b0\u01a1ng t\u1ef1, n\u00f3 d\u1ec5 d\u00e0ng b\u1ecb nhi\u1ec5u b\u1edfi c\u00e1c t\u00e1c \u0111\u1ed9ng b\u00ean ngo\u00e0i d\u1eabn t\u1edbi ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh c\u1ee7a cu\u1ed9c tho\u1ea1i kh\u00f4ng cao. V\u00ec s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 cho n\u00ean cu\u1ed9c g\u1ecdi kh\u00f4ng b\u1ea3o m\u1eadt tr\u00ean \u0111\u01b0\u1eddng d\u00e2y.<\/p>\n

2.\u00a0\u0110i\u1ec7n tho\u1ea1i<\/strong> <\/strong>s\u1ed1<\/strong><\/span><\/p>\n

\u0110\u1eb7c <\/strong>\u0111<\/strong>i\u1ec3m<\/strong>
\n M\u1ed7i m\u1ed9t \u0111i\u1ec7n tho\u1ea1i k\u0129 thu\u1eadt s\u1ed1 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t c\u1ed5ng tr\u00ean t\u1ed5ng \u0111\u00e0i<\/a>. V\u1ec1 truy\u1ec1n d\u1eabn \u0111i\u1ec7n tho\u1ea1i k\u0129 thu\u1eadt s\u1ed1 s\u1eed d\u1ee5ng m\u1ed9t \u0111\u00f4i c\u00e1p \u0111\u1ed3ng \u0111\u01b0\u1eddng k\u00ednh l\u00f5i t\u1eeb 0,4 \u0111\u1ebfn 0,6 mm. T\u00f9y thu\u1ed9c v\u00e0o \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a c\u00e1p \u0111\u1ed3ng m\u00e0 kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a cho ph\u00e9p gi\u1eefa t\u1ed5ng \u0111\u00e0i<\/a> ri\u00eang v\u00e0 \u0111i\u1ec7n tho\u1ea1i l\u00e0 kh\u00e1c nhau. Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a t\u1eeb t\u1ed5ng \u0111\u00e0i<\/a> t\u1edbi \u0111i\u1ec7n tho\u1ea1i k\u00ed thu\u1eadt s\u1ed1 c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 500m (t\u01b0\u01a1ng \u1ee9ng \u0111\u01b0\u1eddng k\u00ednh l\u00f5i c\u00e1p \u0111\u1ed3ng l\u00e0 0,6mm). T\u00edn hi\u1ec7u ti\u1ebfng n\u00f3i truy\u1ec1n qua \u0111i\u1ec7n tho\u1ea1i k\u0129 thu\u1eadt s\u1ed1 theo chu\u1ea9n ri\u00eang c\u1ee7a t\u1eebng nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb (kh\u00f4ng ph\u1ed5 bi\u1ebfn). C\u00e1c \u0111i\u1ec7n tho\u1ea1i k\u0129 thu\u1eadt s\u1ed1 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf t\u01b0\u01a1ng th\u00edch v\u1edbi h\u1ec7 th\u1ed1ng t\u1ed5ng \u0111\u00e0i <\/a>nh\u1ea5t \u0111\u1ecbnh.<\/p>\n

\"dfd\"<\/p>\n

\u01afu <\/strong>\u0111<\/strong>i\u1ec3m:
\n <\/strong>Do l\u00e0 chu\u1ea9n ri\u00eang c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb v\u00e0 l\u00e0 t\u00edn hi\u1ec7u k\u0129 thu\u1eadt s\u1ed1 n\u00ean \u0111i\u1ec7n tho\u1ea1i n\u00e0y h\u1ea1n ch\u1ebf \u0111\u01b0\u1ee3c t\u1ed1i \u0111a nhi\u1ec5u do c\u00e1c t\u00e1c nh\u00e2n b\u00ean ngo\u00e0i, n\u00f3 cho ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh c\u1ee7a cu\u1ed9c tho\u1ea1i r\u1ea5t cao. V\u1edbi \u0111i\u1ec7n tho\u1ea1i k\u0129 thu\u1eadt s\u1ed1 \u0111i\u1ec7n tho\u1ea1i s\u1ebd c\u00f3 th\u00eam c\u00e1c t\u00ednh n\u0103ng cao c\u1ea5p \u0111\u00f3 l\u00e0 gi\u00e1m s\u00e1t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 qu\u1ea3n l\u00fd \u0111i\u1ec1u h\u00e0nh h\u1ec7 th\u1ed1ng.<\/p>\n

Nh\u01b0\u1ee3c <\/strong>\u0111<\/strong>i\u1ec3m<\/strong>:
\n Thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t ph\u00e1t tri\u1ec3n<\/p>\n

3.\u00a0\u0110i\u1ec7n tho\u1ea1i\u00a0kh\u00f4ng d\u00e2y<\/span><\/strong><\/p>\n

\u0110\u1eb7c <\/strong>\u0111<\/strong>i\u1ec3m<\/strong>:
\n C\u00e1c tr\u1ea1m ph\u00e1t s\u00f3ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi t\u1ed5ng \u0111\u00e0i <\/a>b\u1eb1ng c\u00e1c c\u1ed5ng \u0111i\u1ec7n tho\u1ea1i k\u0129 thu\u1eadt s\u1ed1 v\u00e0 c\u00e1c \u0111i\u1ec7n tho\u1ea1i c\u1ea9m tay c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong v\u00f9ng ph\u1ee7 s\u00f3ng c\u1ee7a tr\u1ea1m ph\u00e1t nh\u01b0 c\u00e1c \u0111i\u1ec7n tho\u1ea1i kh\u00e1c. C\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng k\u1ebft n\u1ed1i tr\u1ea1m ph\u00e1t v\u1edbi t\u1ed5ng \u0111\u00e0i l\u00e0 c\u00e1p \u0111i\u1ec7n tho\u1ea1i, t\u00f9y v\u00e0o s\u1ed1 k\u00eanh m\u00e0 tr\u1ea1m ph\u00e1t s\u00f3ng h\u1ed7 tr\u1ee3 m\u00e0 c\u1ea7n s\u1ed1 \u0111\u00f4i c\u00e1p t\u01b0\u01a1ng \u1ee9ng (2 k\u00eanh c\u1ea7n 1 \u0111\u00f4i). Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a gi\u1eefa tr\u1ea1m ph\u00e1t s\u00f3ng v\u00e0 t\u1ed5ng \u0111\u00e0i<\/a> l\u00ean t\u1edbi 500m v\u00e0 b\u00e1n k\u00ednh ph\u1ee7 s\u00f3ng c\u1ee7a tr\u1ea1m l\u00ean t\u1edbi 200m (kh\u00f4ng v\u1eadt c\u1ea3n). C\u00e1c tay con v\u1eabn c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c khi di chuy\u1ec1n t\u1eeb v\u00f9ng ph\u1ee7 s\u00f3ng c\u1ee7a tr\u1ea1m n\u00e0y sang v\u00f9ng c\u1ee7a tr\u1ea1m kh\u00e1c. Ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n th\u00f4ng l\u00e0 ph\u01b0\u01a1ng th\u1ee9c ri\u00eang c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/p>\n

\"fdf\"<\/p>\n

\u01afu <\/strong>\u0111<\/strong>i\u1ec3m:<\/strong>
\n \u01afu \u0111i\u1ec3m c\u1ee7a \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng d\u00e2y l\u00e0 kh\u1ea3 n\u0103ng di chuy\u1ec3n khi s\u1eed d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i. \u0110i\u1ec7n tho\u1ea1i kh\u00f4ng d\u00e2y d\u00f9ng t\u00edn hi\u1ec7u d\u1ea1ng s\u1ed1 l\u00ean ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh cu\u1ed9c tho\u1ea1i cao \u0111\u1ed3ng th\u1eddi \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng d\u00e2y \u0111\u01b0\u1ee3c t\u1ed5ng \u0111\u00e0i h\u1ed7 tr\u1ee3 nhi\u1ec1u t\u00ednh n\u0103ng cao c\u1ea5p.<\/p>\n

Nh\u01b0\u1ee3c <\/strong>\u0111<\/strong>i\u1ec3m<\/strong>
\n Thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t ph\u00e1t tri\u1ec3n<\/p>\n

4.\u00a0\u0110i\u1ec7n tho\u1ea1i\u00a0IP<\/span><\/strong><\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m<\/strong>:
\n C\u00e1c \u0111i\u1ec7n tho\u1ea1i k\u1ebft n\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng t\u1ed5ng \u0111\u00e0i<\/a> th\u00f4ng qua m\u1ea1ng IP. Vi\u1ec7c k\u1ebft n\u1ed1i s\u1eed d\u1ee5ng c\u00e1p m\u1ea1ng (CAT5, CAT6) v\u00e0 thi\u1ebft b\u1ecb m\u1ea1ng m\u00e1y t\u00ednh (SWITCH, ROUTER \u2026). M\u1ed9t \u0111i\u1ec7n tho\u1ea1i IP (M\u1ed9t c\u1ed5ng m\u1ea1ng RJ45) tr\u00ean t\u1ed5ng \u0111\u00e0i c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 s\u1ed1 l\u01b0\u1ee3ng k\u00eanh \u0111i\u1ec7n tho\u1ea1i IP kh\u00e1c nhau.<\/p>\n

\u0110i\u1ec7n tho\u1ea1i IP c\u00f3 2 d\u1ea1ng l\u00e0: m\u1ed9t l\u00e0 \u0111i\u1ec7n tho\u1ea1i IP v\u1eadt l\u00fd (g\u1ecdi l\u00e0 IP Phone), hai l\u00e0 d\u1ea1ng ph\u1ea7n m\u1ec1m c\u00e0i tr\u00ean m\u00e1y t\u00ednh (g\u1ecdi l\u00e0 IP Softphone).<\/p>\n

\"dfdf\"<\/p>\n

\u01afu <\/strong>\u0111<\/strong>i\u1ec3m<\/strong>:
\n Vi\u1ec7c s\u1eed d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i IP gi\u00fap h\u1ee3p nh\u1ea5t m\u1ea1ng truy\u1ec1n th\u00f4ng (m\u1ed9t xu h\u01b0\u1edbng t\u1ea5t y\u1ebfu). D\u1eef li\u1ec7u m\u00e1y t\u00ednh v\u00e0 tho\u1ea1i ch\u1ea1y c\u00f9ng tr\u00ean m\u1ed9t h\u1ea1 t\u1ea7ng m\u1ea1ng, \u0111i\u1ec1u n\u00e0y gi\u00fap cho vi\u1ec7c thi\u1ebft k\u1ebf, thi c\u00f4ng, v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec h\u1ec7 th\u1ed1ng tr\u1edf n\u00ean d\u1ec5 d\u00e0ng.<\/p>\n

V\u1edbi \u0111i\u1ec7n tho\u1ea1i IP khi thay \u0111\u1ed5i v\u1ecb tr\u00ed c\u1ee7a \u0111i\u1ec7n tho\u1ea1i t\u1eeb n\u00fat m\u1ea1ng n\u00e0y sang n\u00fat m\u1ea1ng kh\u00e1c ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ngay m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i thay \u0111\u1ed5i hay l\u1eadp tr\u00ecnh l\u1ea1i h\u1ec7 th\u1ed1ng.<\/p>\n

V\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng ph\u01b0\u01a1ng th\u1ee9c IP, \u0111i\u1ec7n tho\u1ea1i IP c\u1ee7a t\u1ed5ng \u0111\u00e0i c\u00f3 th\u1ec3 \u1edf b\u1ea5t c\u1ee9 \u0111\u00e2u.<\/p>\n

Nh\u01b0\u1ee3c <\/strong>\u0111<\/strong>i\u1ec3m<\/strong>:
\n Chi ph\u00ed \u0111\u1ea7u t\u01b0 h\u1ea1 t\u1ea7ng m\u1ea1ng v\u00e0 thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i l\u00e0 l\u1edbn.<\/p>\n

4.1. \u0110i\u1ec7n tho\u1ea1i IP chu\u1ea9n ri<\/strong>\u00ea<\/strong>ng<\/strong><\/span><\/p>\n

\u0110\u1eb7c <\/strong>\u0111<\/strong>i\u1ec3m: <\/strong>
\n \u0110i\u1ec7n tho\u1ea1i IP chu\u1ea9n ri\u00eang s\u1eed d\u1ee5ng ph\u01b0\u01a1ng th\u1ee9c ri\u00eang c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 c\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i IP chu\u1ea9n ri\u00eang ch\u1ec9 t\u01b0\u01a1ng th\u00edch v\u1edbi lo\u1ea1i t\u1ed5ng \u0111\u00e0i<\/a> nh\u1ea5t \u0111\u1ecbnh.
\n \u01afu <\/strong>\u0111<\/strong>i\u1ec3m: <\/strong>
\n \u0110i\u1ec7n tho\u1ea1i IP chu\u1ea9n ri\u00eang cho ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh c\u1ee7a cu\u1ed9c tho\u1ea1i cao, c\u00f3 th\u1ec3 \u0111\u1ea1t m\u1ee9c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u0111i\u1ec7n tho\u1ea1i k\u0129 thu\u1eadt s\u1ed1. \u0110i\u1ec7n tho\u1ea1i IP chu\u1ea9n ri\u00eang c\u0169ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 c\u00e1c ch\u1ee9c n\u0103ng cao c\u1ea5p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u0111i\u1ec7n tho\u1ea1i k\u0129 thu\u1eadt s\u1ed1.
\n <\/strong><\/p>\n

Nh\u01b0\u1ee3c <\/strong>\u0111<\/strong>i\u1ec3m: <\/strong>
\n Ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n th\u00f4ng v\u00e0 thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i kh\u00f4ng ph\u1ed5 bi\u1ebfn.<\/p>\n

4.2. \u0110i\u1ec7n tho\u1ea1i SIP<\/span><\/strong><\/p>\n

\"dfdddfddd\"<\/p>\n

\u0110\u1eb7c <\/strong>\u0111<\/strong>i\u1ec3m:<\/strong><\/p>\n

\u0110i\u1ec7n tho\u1ea1i SIP s\u1eed d\u1ee5ng ph\u01b0\u01a1ng th\u1ee9c SIP \u0111\u01a1n gi\u1ea3n v\u00e0 ph\u1ed5 bi\u1ebfn. C\u00e1c \u0111i\u1ec7n tho\u1ea1i SIP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi r\u1ea5t nhi\u1ec1u h\u1ec7 th\u1ed1ng t\u1ed5ng \u0111\u00e0i <\/a>kh\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n

\u01afu <\/strong>\u0111<\/strong>i\u1ec3m: <\/strong>
\n \u0110i\u1ec7n tho\u1ea1i SIP l\u00e0 ph\u1ed5 bi\u1ebfn n\u00ean c\u00f3 nhi\u1ec1u s\u1ef1 l\u1ef1a ch\u1ecdn \u0111\u1ed1i v\u1edbi vi\u1ec7c \u0111\u1ea7u t\u01b0 \u0111i\u1ec7n tho\u1ea1i<\/p>\n

——————————————————————————————————<\/p>\n

Ngu\u1ed3n t\u00e0i li\u1ec7u t\u1eeb: vspn.com.vn<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh bao g\u1ed3m: \u0110i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1, \u0111i\u1ec7n tho\u1ea1i\u00a0k\u0129 thu\u1eadt s\u1ed1, \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng d\u00e2y, \u0111i\u1ec7n<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[71,1],"tags":[90,312,313,314,274],"yoast_head":"\nC\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9 - Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/snt.com.vn\/blog\/cac-lo\u1ea1i-di\u1ec7n-tho\u1ea1i-nhanh-cho-t\u1ed5ng-dai-n\u1ed9i-b\u1ed9\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9 - Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf\" \/>\n<meta property=\"og:description\" content=\"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh bao g\u1ed3m: \u0110i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1, \u0111i\u1ec7n tho\u1ea1i\u00a0k\u0129 thu\u1eadt s\u1ed1, \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng d\u00e2y, \u0111i\u1ec7n\" \/>\n<meta property=\"og:url\" content=\"https:\/\/snt.com.vn\/blog\/cac-lo\u1ea1i-di\u1ec7n-tho\u1ea1i-nhanh-cho-t\u1ed5ng-dai-n\u1ed9i-b\u1ed9\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/sieunhatthanh\" \/>\n<meta property=\"article:published_time\" content=\"2013-03-15T10:21:04+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/img.espectador.com\/imagenes\/210839_1303908866_telefono.jpg\" \/>\n<meta name=\"author\" content=\"L\u00ea Tr\u1ea7n\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@sieunhatthanh\" \/>\n<meta name=\"twitter:site\" content=\"@sieunhatthanh\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"L\u00ea Tr\u1ea7n\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/\"},\"author\":{\"name\":\"L\u00ea Tr\u1ea7n\",\"@id\":\"https:\/\/snt.com.vn\/blog\/#\/schema\/person\/002d5e59c17915dcc5b52aec0ea10d55\"},\"headline\":\"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9\",\"datePublished\":\"2013-03-15T10:21:04+00:00\",\"dateModified\":\"2013-03-15T10:21:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/\"},\"wordCount\":1815,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/snt.com.vn\/blog\/#organization\"},\"keywords\":[\"Aastra 470\",\"\u0111i\u1ec7n tho\u1ea1i ip\",\"\u0110i\u1ec7n tho\u1ea1i SIP\",\"\u0110i\u1ec7n tho\u1ea1i s\u1ed1\",\"T\u1ed5ng \u0111\u00e0i IP\"],\"articleSection\":[\"IP PBX\",\"Tin T\u1ee9c\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/\",\"url\":\"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/\",\"name\":\"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9 - Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf\",\"isPartOf\":{\"@id\":\"https:\/\/snt.com.vn\/blog\/#website\"},\"datePublished\":\"2013-03-15T10:21:04+00:00\",\"dateModified\":\"2013-03-15T10:21:04+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"IP PBX\",\"item\":\"https:\/\/snt.com.vn\/blog\/category\/ip-pbx\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/snt.com.vn\/blog\/#website\",\"url\":\"https:\/\/snt.com.vn\/blog\/\",\"name\":\"Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf\",\"description\":\"Blog CNTT - Vi\u1ec5n Th\u00f4ng - Tin T\u1ee9c - IPTV\",\"publisher\":{\"@id\":\"https:\/\/snt.com.vn\/blog\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/snt.com.vn\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/snt.com.vn\/blog\/#organization\",\"name\":\"SNT\",\"url\":\"https:\/\/snt.com.vn\/blog\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/snt.com.vn\/blog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/snt.com.vn\/blog\/wp-content\/uploads\/2017\/03\/logo-nho-new.jpg\",\"contentUrl\":\"https:\/\/snt.com.vn\/blog\/wp-content\/uploads\/2017\/03\/logo-nho-new.jpg\",\"width\":140,\"height\":46,\"caption\":\"SNT\"},\"image\":{\"@id\":\"https:\/\/snt.com.vn\/blog\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/sieunhatthanh\",\"https:\/\/twitter.com\/sieunhatthanh\",\"https:\/\/www.instagram.com\/congtysnt\/\",\"https:\/\/www.pinterest.com\/sieunhatthanh\/\",\"https:\/\/www.youtube.com\/user\/ctysnt\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/snt.com.vn\/blog\/#\/schema\/person\/002d5e59c17915dcc5b52aec0ea10d55\",\"name\":\"L\u00ea Tr\u1ea7n\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/snt.com.vn\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/83c339ba71790cb36f0ff350207549e7?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/83c339ba71790cb36f0ff350207549e7?s=96&d=mm&r=g\",\"caption\":\"L\u00ea Tr\u1ea7n\"},\"sameAs\":[\"https:\/\/snt.com.vn\"],\"url\":\"https:\/\/snt.com.vn\/blog\/author\/letran\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9 - Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/snt.com.vn\/blog\/cac-lo\u1ea1i-di\u1ec7n-tho\u1ea1i-nhanh-cho-t\u1ed5ng-dai-n\u1ed9i-b\u1ed9\/","og_locale":"en_US","og_type":"article","og_title":"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9 - Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf","og_description":"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh bao g\u1ed3m: \u0110i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1, \u0111i\u1ec7n tho\u1ea1i\u00a0k\u0129 thu\u1eadt s\u1ed1, \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng d\u00e2y, \u0111i\u1ec7n","og_url":"https:\/\/snt.com.vn\/blog\/cac-lo\u1ea1i-di\u1ec7n-tho\u1ea1i-nhanh-cho-t\u1ed5ng-dai-n\u1ed9i-b\u1ed9\/","og_site_name":"Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf","article_publisher":"https:\/\/www.facebook.com\/sieunhatthanh","article_published_time":"2013-03-15T10:21:04+00:00","og_image":[{"url":"http:\/\/img.espectador.com\/imagenes\/210839_1303908866_telefono.jpg"}],"author":"L\u00ea Tr\u1ea7n","twitter_card":"summary_large_image","twitter_creator":"@sieunhatthanh","twitter_site":"@sieunhatthanh","twitter_misc":{"Written by":"L\u00ea Tr\u1ea7n","Est. reading time":"9 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/#article","isPartOf":{"@id":"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/"},"author":{"name":"L\u00ea Tr\u1ea7n","@id":"https:\/\/snt.com.vn\/blog\/#\/schema\/person\/002d5e59c17915dcc5b52aec0ea10d55"},"headline":"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9","datePublished":"2013-03-15T10:21:04+00:00","dateModified":"2013-03-15T10:21:04+00:00","mainEntityOfPage":{"@id":"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/"},"wordCount":1815,"commentCount":0,"publisher":{"@id":"https:\/\/snt.com.vn\/blog\/#organization"},"keywords":["Aastra 470","\u0111i\u1ec7n tho\u1ea1i ip","\u0110i\u1ec7n tho\u1ea1i SIP","\u0110i\u1ec7n tho\u1ea1i s\u1ed1","T\u1ed5ng \u0111\u00e0i IP"],"articleSection":["IP PBX","Tin T\u1ee9c"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/","url":"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/","name":"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9 - Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf","isPartOf":{"@id":"https:\/\/snt.com.vn\/blog\/#website"},"datePublished":"2013-03-15T10:21:04+00:00","dateModified":"2013-03-15T10:21:04+00:00","breadcrumb":{"@id":"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/snt.com.vn\/blog\/cac-lo%e1%ba%a1i-di%e1%bb%87n-tho%e1%ba%a1i-nhanh-cho-t%e1%bb%95ng-dai-n%e1%bb%99i-b%e1%bb%99\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"IP PBX","item":"https:\/\/snt.com.vn\/blog\/category\/ip-pbx\/"},{"@type":"ListItem","position":2,"name":"C\u00e1c lo\u1ea1i \u0111i\u1ec7n tho\u1ea1i nh\u00e1nh cho t\u1ed5ng \u0111\u00e0i n\u1ed9i b\u1ed9"}]},{"@type":"WebSite","@id":"https:\/\/snt.com.vn\/blog\/#website","url":"https:\/\/snt.com.vn\/blog\/","name":"Blog SNT - C\u00f4ng Ty TNHH Si\u00eau Nh\u1eadt Thanh - Sao Nhanh Th\u1ebf","description":"Blog CNTT - Vi\u1ec5n Th\u00f4ng - Tin T\u1ee9c - IPTV","publisher":{"@id":"https:\/\/snt.com.vn\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/snt.com.vn\/blog\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/snt.com.vn\/blog\/#organization","name":"SNT","url":"https:\/\/snt.com.vn\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/snt.com.vn\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/snt.com.vn\/blog\/wp-content\/uploads\/2017\/03\/logo-nho-new.jpg","contentUrl":"https:\/\/snt.com.vn\/blog\/wp-content\/uploads\/2017\/03\/logo-nho-new.jpg","width":140,"height":46,"caption":"SNT"},"image":{"@id":"https:\/\/snt.com.vn\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/sieunhatthanh","https:\/\/twitter.com\/sieunhatthanh","https:\/\/www.instagram.com\/congtysnt\/","https:\/\/www.pinterest.com\/sieunhatthanh\/","https:\/\/www.youtube.com\/user\/ctysnt"]},{"@type":"Person","@id":"https:\/\/snt.com.vn\/blog\/#\/schema\/person\/002d5e59c17915dcc5b52aec0ea10d55","name":"L\u00ea Tr\u1ea7n","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/snt.com.vn\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/83c339ba71790cb36f0ff350207549e7?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/83c339ba71790cb36f0ff350207549e7?s=96&d=mm&r=g","caption":"L\u00ea Tr\u1ea7n"},"sameAs":["https:\/\/snt.com.vn"],"url":"https:\/\/snt.com.vn\/blog\/author\/letran\/"}]}},"_links":{"self":[{"href":"https:\/\/snt.com.vn\/blog\/wp-json\/wp\/v2\/posts\/2794"}],"collection":[{"href":"https:\/\/snt.com.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/snt.com.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/snt.com.vn\/blog\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/snt.com.vn\/blog\/wp-json\/wp\/v2\/comments?post=2794"}],"version-history":[{"count":0,"href":"https:\/\/snt.com.vn\/blog\/wp-json\/wp\/v2\/posts\/2794\/revisions"}],"wp:attachment":[{"href":"https:\/\/snt.com.vn\/blog\/wp-json\/wp\/v2\/media?parent=2794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/snt.com.vn\/blog\/wp-json\/wp\/v2\/categories?post=2794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/snt.com.vn\/blog\/wp-json\/wp\/v2\/tags?post=2794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}