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Presentacion H323 Tinoco

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Protocolo H.323 para transferencia de audio, video, voz, etc.

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Presentacion H323 Tinoco

  1. 1. UNIVERSIDAD NACIONAL Telecomunicaciones y Redes I Protocolo H.323 Profesor: Ing. Randall Rojas MSc. Trabajo por: José Tinoco Pineda II Ciclo,2009
  2. 2. Definición H.323 <ul><li>Es el primer estandar, es una norma ITU-T (International Telecommunication Union) para multimedia sobre paquetes de red. </li></ul><ul><li>Se define como una combinación de información de datos, audio, video y control. </li></ul><ul><li>Para ello se utiliza protocolos como el Q.931 (sacado de la tecnología ISDN), H.245 y el H.225. </li></ul>
  3. 3. Utilidad <ul><li>Es utilizado comúnmente para Voz sobre IP (VoIP, Telefonía de internet o Telefonía IP) y para videoconferencia, que hacen referencia a los terminales, equipos y servicios estableciendo una señalización en redes IP . </li></ul><ul><li>Ejemplo: Es utilizado en Netmeeting, live Messenger, Skype, etc. </li></ul>
  4. 4. Características H.323 <ul><li>Uno de los primeros protocolos para VoIP que aparecieron en la industria. </li></ul><ul><li>Basado en tecnologías de voz tradicionales (por ejemplo, Q.931 de ISDN) </li></ul><ul><li>Permite el establecimiento directo de llamadas entre dos terminales, o bien con la intervención de un moderador (gatekeeper). </li></ul>
  5. 5. Origen <ul><li>QoS no garantizada – VoIP independiente – V.3 incluye FoIP </li></ul>1996 1998 2000 Versión 1 Versión 2 Uso en Netmeeting y Ekiga
  6. 6. Arquitectura H.323
  7. 7. Componentes H.323
  8. 8. Gatekeeper <ul><li>La función del Registro H.323 permite el establecimiento entre dos endpoints. </li></ul><ul><li>Ente centralizador, con que se registran todos los endpoints de una red H.323. </li></ul><ul><li>Para hacer una llamada, el endpoint contacta al Gatekeeper para que este realice el establecimiento de la sesión. </li></ul>
  9. 9. Gatekeeper <ul><li>Por ejemplo, en un enlace de 128 kbps, solo se pueden realizar 4 llamadas de 32 kbps. Si se intenta colocar una quinta llamada, las 5 se verán perjudicadas. </li></ul><ul><li>La función del Gatekeeper es evitar para garantizar la calidad del servicio de las primeras cuatro. </li></ul>
  10. 10. Muchas Gracias!

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