<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0122-3461</journal-id>
<journal-title><![CDATA[Ingeniería y Desarrollo]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. Desarro.]]></abbrev-journal-title>
<issn>0122-3461</issn>
<publisher>
<publisher-name><![CDATA[Fundación Universidad del Norte]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-34612017000100262</article-id>
<article-id pub-id-type="doi">10.14482/inde.35.1.8952</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Review of Quality of Service (QoS) mechanisms over ip Multimedia Subsystem (ims)]]></article-title>
<article-title xml:lang="es"><![CDATA[Revisión de los mecanismos de Calidad de Servicio (QoS) sobre IP Multimedia Subsystem (IMS)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas Rodríguez]]></surname>
<given-names><![CDATA[Mauricio Alexander]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cadena Muñoz]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Distrital Francisco José de Caldas  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>35</volume>
<numero>1</numero>
<fpage>262</fpage>
<lpage>281</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-34612017000100262&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-34612017000100262&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-34612017000100262&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The present state of the art establishes the basis for studying different mechanisms to provide end-to-end Quality of Service on a network over the IP Multimedia Subsystem (IMS). Unlike traditional networks which ensure QoS individually depending on the service provided, IMS seeks the convergence of fixed and mobile services with Quality of Service through a set of policies defined by operators and Service Level Agree ments established with their users.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El presente estado del arte establece las bases para el estudio de diferentes mecanismos para proporcionar la calidad de servicio (QoS) de extremo a extremo en una red sobre el subsistema multimedia IP (IMS). A dife rencia de las redes tradicionales que aseguran la Calidad de Servicio de forma individual dependiendo del servicio que proveen, en IMS se busca la convergencia de servicios móviles y fijos con la Calidad de Servicio a través de una serie de políticas que son definidas por los operadores y los Acuerdos de Nivel de Servicio establecidos con sus usuarios.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Heterogenous network]]></kwd>
<kwd lng="en"><![CDATA[IMS]]></kwd>
<kwd lng="en"><![CDATA[NGN]]></kwd>
<kwd lng="en"><![CDATA[QoS]]></kwd>
<kwd lng="en"><![CDATA[SLA]]></kwd>
<kwd lng="es"><![CDATA[IMS]]></kwd>
<kwd lng="es"><![CDATA[NGN]]></kwd>
<kwd lng="es"><![CDATA[QoS]]></kwd>
<kwd lng="es"><![CDATA[Red heterogénea]]></kwd>
<kwd lng="es"><![CDATA[SLA]]></kwd>
</kwd-group>
</article-meta>
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