{"id":40244,"date":"2025-09-10T14:41:00","date_gmt":"2025-09-10T14:41:00","guid":{"rendered":"https:\/\/nctatechnicalp.wpenginepowered.com\/?p=40244"},"modified":"2025-09-10T18:13:44","modified_gmt":"2025-09-10T18:13:44","slug":"the-proactive-network-maintenance-comeback","status":"publish","type":"post","link":"https:\/\/nctatechnicalpapers.com\/?p=40244","title":{"rendered":"The Proactive Network Maintenance Comeback"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>Proactive network maintenance (PNM) has been a cornerstone in detecting and locating faults in cable and plant infrastructure since 2009. Despite its long history, the deployment of downstream (DS) orthogonal frequency-division multiplexing (OFDM) and upstream (US) orthogonal frequency-division multiple access (OFDMA) technologies bring revolutionary enhancements over legacy single carrier quadrature amplitude modulation (SC-QAM) channels which use 24-tap pre-equalizers (Pre-EQ) in the upstream. The introduction of 25 kilohertz (kHz) and 50 kHz subcarrier spacing, along with a significantly wider channel width and higher sample rates, dramatically improves resolution and sensitivity. This advancement enables the precise location of damaged cable faults to within just a few feet.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":true,"footnotes":""},"categories":[14,7],"tags":[],"class_list":["post-40244","post","type-post","status-publish","format-standard","hentry","category-2020s","category-all-decades"],"acf":[],"_links":{"self":[{"href":"https:\/\/nctatechnicalpapers.com\/index.php?rest_route=\/wp\/v2\/posts\/40244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nctatechnicalpapers.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nctatechnicalpapers.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nctatechnicalpapers.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nctatechnicalpapers.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=40244"}],"version-history":[{"count":0,"href":"https:\/\/nctatechnicalpapers.com\/index.php?rest_route=\/wp\/v2\/posts\/40244\/revisions"}],"wp:attachment":[{"href":"https:\/\/nctatechnicalpapers.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=40244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nctatechnicalpapers.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=40244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nctatechnicalpapers.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=40244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}