{"id":6870,"date":"2016-08-19T10:19:41","date_gmt":"2016-08-19T15:19:41","guid":{"rendered":"https:\/\/www.servimatango.com\/blog\/?p=6870"},"modified":"2019-06-11T07:36:04","modified_gmt":"2019-06-11T12:36:04","slug":"parametros-relacioandos-con-la-calidad-de-voz","status":"publish","type":"post","link":"https:\/\/servervoip.com\/blog\/parametros-relacioandos-con-la-calidad-de-voz\/","title":{"rendered":"Par\u00e1metros relacioandos con la calidad de voz"},"content":{"rendered":"<p><strong>Retardo de red  <\/strong><\/p>\n<p>Hay que distinguir aqu\u00ed que no estamos hablando de  retardo de voz sino el retardo  delos paquetes de red en las redes de paquetes.  Una manera sencilla de calcular el retardo de la re d es utilizar al comando ping. El  comando ping nos presenta al final un peque\u00f1o resumen estad\u00edstico de los paquetes  enviados. El resumen luce como el siguiente.  Aqu\u00ed podemos ver algunos par\u00e1metros como el retardo m\u00ednimo, m\u00e1ximo, promedio y desviaci\u00f3n<\/p>\n<p><strong>P\u00e9rdidas de paquetes<\/strong><\/p>\n<p>Las p\u00e9rdidas son ocasionadas por paquetes que no llegaron a su destino. Pueden  haber muchas razones para esto como equipos defectuosos o saturados, p\u00e9rdidas  en el medio de transmisi\u00f3n (cables mal ponchados, ruido ambiente elevado), etc.  <\/p>\n<p>En el reporte del comando ping examinado hace poco  vemos que tambi\u00e9n se nos  reporta porcentualmente las p\u00e9rdidas de paquetes. Lo deseable es que no existan  p\u00e9rdidas de paquetes en lo absoluto. Si existen, hay que averiguar el por qu\u00e9.  Inclusive p\u00e9rdidas de menos del 1% pueden afectar a las conversaciones de voz  sobre IP. M\u00e1s a\u00fan si usamos codecs con gran compresi\u00f3n.   <\/p>\n<p><strong>Jitter  <\/strong><\/p>\n<p>El jitter es un par\u00e1metro muy importante cuando se  habla de calidad de voz en  redes de paquetes. El jitter se define como la variabilidad del retardo y normalmente  est\u00e1 en el orden de los milisegundos.  Este par\u00e1metro es necesario para analizar la calidad de voz pues conocer que  tenemos un promedio de retardo bajo no es suficiente para garantizar una buena  calidad. \u00bfPor qu\u00e9?  Porque si tenemos un promedio de retardo aceptable  pero en cambio es muy  variable esto significa que existe m\u00e1s probabilidad  que los paquetes lleguen en  desorden o con retardos excesivos y debemos recordar que debido a que estamos  hablando de comunicaciones en tiempo real no se pueden esperar a que lleguen  todos los paquetes, habr\u00e1 que descartar los que se  demoren m\u00e1s de lo necesario.  Por tanto, si tenemos un jitter elevado es m\u00e1s probable que se descarten paquetes  y por lo tanto oigamos una conversaci\u00f3n entrecortada .  <\/p>\n<p><strong>C\u00f3mo medir la calidad de voz  <\/strong><\/p>\n<p>Medir la calidad de voz siempre ha sido un rompecabezas para los ingenieros y  su complejidad radica en que la calidad de voz es en parte un par\u00e1metro subjetivo  de la persona que escucha. Hay personas que justifican inconscientemente cierta  falta de calidad de voz en pro de las ventajas o conveniencias personales percibidas  y un ejemplo de esto es que las personas no se queja n mucho de la calidad de voz  en tel\u00e9fonos celulares (al menos de primera generaci\u00f3n) en pro de la ventaja de la  movilidad. Sin embargo, si la misma calidad la escucharan en una l\u00ednea fija es  probable que llamen a la compa\u00f1\u00eda telef\u00f3nica a quejarse porque su l\u00ednea suena raro  o con mala calidad. Dicho de otra manera inconscientemente estamos justificando  esa falta de calidad y haci\u00e9ndola \u201cjustificable\u201d  <\/p>\n<p>Tomado de:<br \/>\nArroba, M, &#038; Salazar, M. (2011). Propuesta de soluci\u00f3nes a las vulnerabilidades del protocolo de se\u00f1alizaci\u00f3n SIP en voz sobre IP: Red IP-PBX (tesis de pregrado). Escuela Superior Polit\u00e9cnica de Chimborazo, Riobamba, Ecuador.<\/p>\n<p>Fuente:<br \/>\nhttp:\/\/dspace.espoch.edu.ec\/bitstream\/123456789\/872\/1\/38T00263.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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por el Tuyo.<\/p>\n<p>Y T\u00fa, \u00bfTienes lo Que le Hace Falta para Ser un VERDADERO EMPRENDEDOR@?<\/p>\n<p>Tu Empresa de Telefon\u00eda VoIP est\u00e1 dise\u00f1ada para que administres, gestiones y monitorees sus herramientas sin complicaciones o necesidad de conocimientos t\u00e9cnicos.<\/p>\n<ul>\n<li>Genera <strong>CLIENTES<\/strong>,<\/li>\n<li>Ingresa <strong>PROVEEDORES<\/strong>,<\/li>\n<li>Forma <strong>DISTRIBUIDORES<\/strong><\/li>\n<\/ul>\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\" 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\/desventajas-telefonia-ip\/\">Desventajas al Usar la Telefonia por Internet (VoIP)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Retardo de red Hay que distinguir aqu\u00ed que no estamos hablando de retardo de voz sino el retardo delos paquetes de red en las redes de paquetes. Una manera sencilla de calcular el retardo de la re d es utilizar al comando ping. El comando ping nos presenta al final un peque\u00f1o resumen estad\u00edstico de&#8230;<\/p>\n<p><a class=\"excerpt-read-more btn btn-primary\" href=\"https:\/\/servervoip.com\/blog\/parametros-relacioandos-con-la-calidad-de-voz\/\" title=\"ReadPar\u00e1metros relacioandos con la calidad de voz\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":6871,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"image","meta":[],"categories":[13],"tags":[1026,1865,1866,18,17],"_links":{"self":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts\/6870"}],"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=6870"}],"version-history":[{"count":0,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/posts\/6870\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/media\/6871"}],"wp:attachment":[{"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/media?parent=6870"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/categories?post=6870"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/servervoip.com\/blog\/wp-json\/wp\/v2\/tags?post=6870"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}