{"id":6614,"date":"2016-08-16T11:22:39","date_gmt":"2016-08-16T16:22:39","guid":{"rendered":"https:\/\/www.servimatango.com\/blog\/?p=6614"},"modified":"2019-06-11T07:56:27","modified_gmt":"2019-06-11T12:56:27","slug":"codecs-para-voip-voz-sobre-ip","status":"publish","type":"post","link":"https:\/\/servervoip.com\/blog\/codecs-para-voip-voz-sobre-ip\/","title":{"rendered":"Codecs para voip, voz sobre ip"},"content":{"rendered":"<p>Un algoritmo compresor\/decompresor (codec) es un conjunto de transformaciones  utilizadas para digitalizar la voz. Los code cs convierten tanto la voz en datos (bits)  como los datos en voz. Un codec toma una se\u00f1al anal\u00f3gica y la convierte en una se\u00f1al  digital en un formato binario (0s y 1s). Ex isten muchas formas de digitalizar audio y  cada una de esas formas resulta en un ti po de codec. <\/p>\n<p>En general se puede asumir que  a mayor compresi\u00f3n se va a obtener mayo r distorsi\u00f3n (peor calidad). Un codec se  considera mejor que otro cuando es capaz de  ofrecer mejor calidad de voz usando la  misma cantidad de ancho de banda.  Un circuito de la RTB (el tel\u00e9fono de si empre) usa un codec conocido como  Modulaci\u00f3n por Impulsos Codificados (MIC) del ingl\u00e9s Pulse Code Modulation (PCM).  El MIC es un codec de alta calidad que  necesita 64 kbps. Dos est\u00e1ndares de  compresi\u00f3n MIC son el microlaw (ulaw) y  el alaw. A estos est\u00e1ndares se les conoce  tambi\u00e9n como G711u y G711a, respectivament e. <\/p>\n<p>El microlaw se usa normalmente en  Norteam\u00e9rica y el alaw en Europa. La fam ilia de codecs G711 no requieren de gran  procesamiento y por eso est \u00e1n disponibles en la mayor\u00eda de los equipos de voz IP.  En pa\u00edses en desarrollo, el uso del G. 711 no es viable porque requiere demasiado  ancho de banda. Por lo que se debe consider ar otro tipo de codecs que hagan un uso  m\u00e1s efectivo de los recursos disponibles en la red.  <\/p>\n<p>Unas buenas opciones de codecs libres y  que usan poco ancho de banda son el  codec de GSM y el Speex.  El G.729 es un codec propietar io altamente robusto pero  requiere de una licencia para su uso comercia l. G.729 es un codec de 8 kbps (aprox.  30 Kbps por conversaci\u00f3n usando SIP). El codec fue desarrollado por un consorcio de  organizaciones: France Telecom, Mitsubishi  Electric Corporatio n, Nippon Telegraph  and Telephone Corporation (NTT) y la Univer sidad de Sherbrooke. El precio del codec  es de 10 USD.<\/p>\n<p>Tomado de:<br \/>\nM\u00e9ndez, V. (2008). Implementaci\u00f3n de conmutador de voz IP (PBX virtual) sobre una red de datos (tesis de pregrado). Instituto Politecnico Nacional, Culhuacan, M\u00e9xico.<\/p>\n<p>Fuente:<br \/>\nhttp:\/\/itzamna.bnct.ipn.mx:8080\/dspace\/bitstream\/123456789\/6880\/1\/ice180.pdf<\/p>\n<p>\n<div id=\"rev_slider_3_1_wrapper\" class=\"rev_slider_wrapper fullwidthbanner-container\" style=\"float:left;background-color:#E9E9E9;padding:0px;margin-left:0px;margin-right:0px;margin-top:0px;margin-bottom:0px;\">\n<!-- START REVOLUTION SLIDER 5.0.9 auto mode -->\n\t<div id=\"rev_slider_3_1\" class=\"rev_slider fullwidthabanner\" style=\"display:none;\" data-version=\"5.0.9\">\n<ul>\t<!-- SLIDE  -->\n\t<li data-index=\"rs-28\" data-transition=\"random\" data-slotamount=\"7\"  data-easein=\"default\" data-easeout=\"default\" data-masterspeed=\"300\"  data-thumb=\"\"  data-rotate=\"0\"  data-saveperformance=\"off\"  class=\"voipswitch videos subtitulos\" id=\"voipswitch videos subtitulos\" voipswitch videos subtitulos data-title=\"SubtitulosTexto\" data-description=\"\">\n\t\t<!-- MAIN IMAGE -->\n\t\t<img src=\"https:\/\/servervoip.com\/blog\/wp-content\/plugins\/revslider\/admin\/assets\/images\/dummy.png\"  alt=\"\"  width=\"879\" height=\"51\" data-lazyload=\"https:\/\/servervoip.com\/blog\/wp-content\/plugins\/revslider\/admin\/assets\/images\/transparent.png\" data-bgposition=\"center top\" data-bgfit=\"cover\" data-bgrepeat=\"no-repeat\" class=\"rev-slidebg\" data-no-retina>\n\t\t<!-- LAYERS -->\n\n\t\t<!-- LAYER NR. 1 -->\n\t\t<div class=\"tp-caption   tp-resizeme\" \n\t\t\t id=\"slide-28-layer-2\" \n\t\t\t data-x=\"\" \n\t\t\t data-y=\"1\" \n\t\t\t\t\t\tdata-width=\"['none','none','none','none']\"\n\t\t\tdata-height=\"['none','none','none','none']\"\n\t\t\tdata-transform_idle=\"o:1;\"\n \n\t\t\t data-transform_in=\"opacity:0;s:300;e:Power2.easeInOut;\" \n\t\t\t data-transform_out=\"opacity:0;s:300;s:300;\" \n\t\t\tdata-start=\"500\" \n\t\t\tdata-responsive_offset=\"on\" \n\n\t\t\t\n\t\t\tstyle=\"z-index: 5;\">\n\t\t\t\t<div class=\"rs-looped disabled\" ><img src=\"https:\/\/servervoip.com\/blog\/wp-content\/plugins\/revslider\/admin\/assets\/images\/dummy.png\" alt=\"\" data-ww=\"879\" data-hh=\"51\" data-lazyload=\"https:\/\/www.servervoip.com\/blog\/wp-content\/uploads\/2015\/10\/fondo-en-degradado-con-signod-copia.jpg\" data-no-retina> \n\t\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t<!-- LAYER NR. 2 -->\n\t\t<div class=\"tp-caption mediumbgorange   tp-resizeme\" \n\t\t\t id=\"slide-28-layer-1\" \n\t\t\t data-x=\"6\" \n\t\t\t data-y=\"5\" \n\t\t\t\t\t\tdata-width=\"['653']\"\n\t\t\tdata-height=\"['41']\"\n\t\t\tdata-transform_idle=\"o:1;\"\n \n\t\t\t data-transform_in=\"opacity:0;s:300;e:Power3.easeInOut;\" \n\t\t\t data-transform_out=\"auto:auto;s:300;\" \n\t\t\tdata-start=\"500\" \n\t\t\tdata-splitin=\"none\" \n\t\t\tdata-splitout=\"none\" \n\t\t\tdata-responsive_offset=\"on\" \n\n\t\t\t\n\t\t\tstyle=\"z-index: 6; 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La ubicaci\u00f3n estrat\u00e9gica en Europa central y en Estados Unidos son las ventajas principales.<\/p>\n<p>Los Data Centers est\u00e1n perfectamente situados para garantizar conexiones r\u00e1pidas a todos los territorios de Europa y Am\u00e9rica para que todos los clientes se beneficien de la mejor calidad en el servicio brindado. Por otra parte, el edificio que est\u00e1 situado en Europa se encuentra en una de las zonas m\u00e1s ricas de agua subterr\u00e1nea, lo que abre la posibilidad a ServerVoIP de realizar un innovador, ecol\u00f3gico y \u00fanico sistema de refrigeraci\u00f3n de forma natural.<\/p>\n<p><a href=\"http:\/\/www.servervoip.com\/datacenter\"><img loading=\"lazy\" src=\"https:\/\/www.servimatango.com\/blog\/wp-content\/uploads\/2015\/09\/datacenter-usa.png\" alt=\"datacenter usa\" width=\"500\" height=\"375\" class=\"aligncenter size-full wp-image-4504\" srcset=\"https:\/\/servervoip.com\/blog\/wp-content\/uploads\/2015\/09\/datacenter-usa.png 500w, https:\/\/servervoip.com\/blog\/wp-content\/uploads\/2015\/09\/datacenter-usa-300x225.png 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/a><br \/>\n[st_button button_text=\u00bb SOLICITA TU SERVER AHORA \u25ba\u00bb button_type_url=\u00bbhttp:\/\/www.servervoip.com\/voipswitch-comprar.php?server=50_promo\u00bb open_in=\u00bbnew_window\u00bb icon=\u00bbfa fa-shopping-cart\u00bb button_alignment=\u00bbcenter\u00bb button_margin_top=\u00bb-140&#8243; button_size=\u00bbbtn-lg\u00bb button_color=\u00bbbtn-blue\u00bb appearing_animation=\u00bbfade_in\u00bb wrapper_padding_top=\u00bb0&#8243; wrapper_padding_left=\u00bb0&#8243; wrapper_padding_bottom=\u00bb0&#8243; wrapper_padding_right=\u00bb0&#8243; wrapper_bg_opacity_slider=\u00bb\u00bb id_wrapper=\u00bbelm_5c828b4c66bc9&#8243; ][\/st_button]<br \/>\n&nbsp;<br \/>\n<strong>ServerVoIP<\/strong> te proporciona todas las herramientas necesarias para que crees y desarrolles <strong>tu negocio de comunicaci\u00f3n por internet.<\/strong><\/p>\n<p>Pertenece al Selecto Grupo de Emprendedores que decidieron cambiar su vida invirtiendo en un <strong>Server con ServerVoIP.<\/strong><\/p>\n<p><strong>ServerVoip <\/strong>presenta el mejor server fisico dedicado para telefonia voip que incluye el software de telefon\u00eda ip \u00abVoipSwitch\u00bb especial para voz sobre ip.<\/p>\n<p><strong>VoipSwitch <\/strong>es la plataforma ideal para que sin necesidad de conocimientos t\u00e9cnicos crees tu propia empresa de Telefon\u00eda IP VoIP y encuentres una forma de ganar DINERO en la red siendo carrier de telefon\u00eda sobre Ip (Voip).<\/p>\n<p>Te brindamos todas las herramientas para que est\u00e9s al nivel de las grandes empresas y negocios; puedas obsequiar llamadas gratis como estrategia de marketing en fidelizaci\u00f3n a tus clientes \/ free entre tus clientes; el servidor VoIP te permite utilizar m\u00faltiples proveedores como nosotros tenemos <a href=\"http:\/\/www.alosip.com\/\" target=\"_blank\" rel=\"noopener noreferrer\"> www.alosip.com.<\/a> (carrier \/ routes) para un mismo destino, vender terminaci\u00f3n (wholesale), clientes finales (retail), etc.<\/p>\n<p>El software te proporciona todo lo que necesitas; sistema llave en mano: para crear tu empresa de telefon\u00eda IP (VoIP) bajo tu propio nombre o marca. M\u00e1s informaci\u00f3n en <a href=\"http:\/\/marcablanca.servervoip.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">marcaBlanca.servervoip.com<\/a><\/p>\n<p>Para que CREES y DESARROLLES tu propia empresa de telefonia por internet, revisa m\u00e1s detalles en <a href=\"http:\/\/www.servervoip.com\/voipswitch\/\">VoIPSwitch <\/a><\/p>\n<hr \/>\n<h1 style=\"text-align: center;\">\u00bfQuieres Emprender por Internet?<\/h1>\n<h3 style=\"text-align: center;\">\u00abAhora Trabajar desde la Comodidad de tu Casa y Ganar Dinero por Internet&#8230; Nunca Hab\u00eda Sido tan F\u00e1cil, R\u00e1pido y con RESULTADOS Impresionantes\u00bb<\/h3>\n<p style=\"text-align: center;\">Descubre el NEGOCIO Perfecto y convi\u00e9rtete en un EMPRESARIO de \u00c9xito creando y desarrollando tu Propia Empresa de Telefon\u00eda por Internet. <strong>Suscr\u00edbete y RECIBE FREE<\/strong>:<\/p>\n<h2 style=\"text-align: center;\">\u00a1Sie7e Poderosas Razones Que Tiene el EMPRENDEDOR Exitoso para Crear su Propia Empresa de Telefon\u00eda por Internet VoIP!&#8230;<\/h2>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-1229 size-medium\" title=\"libro server voip\" src=\"http:\/\/servimatango.com\/negocios-rentables\/wp-content\/uploads\/2015\/07\/libro-server-voip-241x300.png\" alt=\"libro server voip\" width=\"241\" height=\"300\" \/><br \/>\n[st_accordion div_margin_bottom=\u00bb15&#8243; initial_open=\u00bb0&#8243; multi_open=\u00bbyes\u00bb wrapper_padding_top=\u00bb0&#8243; wrapper_padding_left=\u00bb0&#8243; wrapper_padding_bottom=\u00bb0&#8243; wrapper_padding_right=\u00bb0&#8243; wrapper_bg_opacity_slider=\u00bb\u00bb wrapper_bg_opacity=\u00bb50&#8243; wrapper_border_style=\u00bboutset\u00bb wrapper_rounded_topleft=\u00bb3&#8243; id_wrapper=\u00bbelm_5c828b0bd3fa6&#8243; ][st_item_accordion heading=\u00bb<img class=aligncenter src=http:\/\/servimatango.com\/negocios-rentables\/wp-content\/uploads\/2015\/07\/Boton-descarga-reporte.gif alt=Reporte width=500 height=145 \/>\u00bb id_wrapper=\u00bbelm_5c828b0bd3f58&#8243; ]<center><script type=\"text\/javascript\" src=\"http:\/\/app.getresponse.com\/view_webform.js?wid=10619501&#038;u=kSvx\"><\/script><\/center>[\/st_item_accordion][\/st_accordion]<\/p>\n<p><a href=\"https:\/\/www.servimatango.com\/blog\/idiomas-voip-box\/\">Idiomas VoIPBox del Software VoIP Switch<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Un algoritmo compresor\/decompresor (codec) es un conjunto de transformaciones utilizadas para digitalizar la voz. Los code cs convierten tanto la voz en datos (bits) como los datos en voz. Un codec toma una se\u00f1al anal\u00f3gica y la convierte en una se\u00f1al digital en un formato binario (0s y 1s). Ex isten muchas formas de digitalizar&#8230;<\/p>\n<p><a class=\"excerpt-read-more btn btn-primary\" href=\"https:\/\/servervoip.com\/blog\/codecs-para-voip-voz-sobre-ip\/\" title=\"ReadCodecs para voip, voz sobre ip\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":6615,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"image","meta":[],"categories":[13],"tags":[],"_links":{"self":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts\/6614"}],"collection":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/comments?post=6614"}],"version-history":[{"count":0,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts\/6614\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/media\/6615"}],"wp:attachment":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/media?parent=6614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/categories?post=6614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/tags?post=6614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}