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Integrated services
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<p>In <a href="/facts/Computer_networking/3w5RM99p">computer networking</a>, integrated services or IntServ is an architecture that specifies the elements to guarantee <a href="/facts/Quality_of_service/joz9VkUm">quality of service</a> (QoS) on networks. IntServ can for example be used to allow <a href="/facts/Streaming_media/4rPhSq0Y">video and sound</a> to reach the receiver without interruption. </p><p>IntServ specifies a <a href="/facts/Granularity_(parallel_computing)/3UJW0Iu6">fine-grained</a> QoS system, which is often contrasted with <a href="/facts/DiffServ/GcqpLBW3">DiffServ</a>'s coarse-grained control system. </p><p>Under IntServ, every <a href="/facts/Router_(computing)/Nh5cIyVf">router</a> in the system implements IntServ, and every application that requires some kind of QoS guarantee has to make an individual reservation. <i>Flow specs</i> describe what the reservation is for, while <i>RSVP</i> is the underlying mechanism to signal it across the network. </p>