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--- en:dpi:qoe_analytics:cases:queries_from_database:problematic_subscribers [2025/11/01 07:57] – elena.krasnobryzh
+++ en:dpi:qoe_analytics:cases:queries_from_database:problematic_subscribers [2025/11/01 07:58] (current) – [Internet quality degradation] elena.krasnobryzh
@@ Line 92: / Line 92: @@
 ===== Internet quality degradation =====
-The simplest and most well-studied DPI metric for assessing connection quality is [[https://bezopasnik.info/что-такое-время-приема-передачи-rtt/|RTT]]. DPI can measure RTT and separate results by direction (to and from subscriber) and by protocols or devices if necessary. A high “RTT from subscriber” value over a long period likely means that the subscriber is experiencing problems accessing online services such as gaming, video, or communication. Usually, this is due to the Wi-Fi network, but it can also indicate congestion in the operator’s network.
+The simplest and most well-studied DPI metric for assessing connection quality is [[https://en.wikipedia.org/wiki/Round-trip_delay|RTT]]. DPI can measure RTT and separate results by direction (to and from subscriber) and by protocols or devices if necessary. A high “RTT from subscriber” value over a long period likely means that the subscriber is experiencing problems accessing online services such as gaming, video, or communication. Usually, this is due to the Wi-Fi network, but it can also indicate congestion in the operator’s network.
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