{"id":80607,"date":"2026-09-16T12:08:15","date_gmt":"2026-09-16T15:08:15","guid":{"rendered":"https:\/\/a3aengenharia.com\/?post_type=articles&#038;p=80607"},"modified":"2026-09-16T12:08:15","modified_gmt":"2026-09-16T15:08:15","slug":"network-certification-testing-reports-technical-acceptance","status":"publish","type":"articles","link":"https:\/\/a3aengenharia.com\/en-us\/content\/technical-articles\/network-certification-testing-reports-technical-acceptance\/","title":{"rendered":"Network Certification: Process, Testing, Reports, and Technical Acceptance"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Network certification is the technical process used to demonstrate that installed cabling meets performance requirements, the defined test configuration, the design, and acceptance criteria. It is not an internet speed test or merely the issuance of a report by a certifier: it involves planning, link identification, limit selection, calibration, controlled execution, failure handling, retesting, traceability, and integration of results into the As Built documentation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For copper cabling, certification typically verifies permanent links, channels, or special configurations against the limits of the applicable class. For optical fiber, the process uses specific attenuation-measurement and characterization methods such as LSPM\/OLTS and OTDR, according to scope. In both cases, the purpose is to produce verifiable evidence that the delivered passive infrastructure complies with requirements.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What network certification validates \u2014 and what it does not validate<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Certification answers the question: <strong>does the installed passive link meet the technical limits and requirements defined for it?<\/strong> This is different from verifying the operation of switches, VLANs, DHCP, Wi-Fi, routing, applications, or end-to-end throughput.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Verification<\/td><td>Cabling certification<\/td><td>Active-network test<\/td><\/tr><tr><td>Continuity\/wire map<\/td><td>yes<\/td><td>not the primary objective<\/td><\/tr><tr><td>Insertion loss\/NEXT\/return loss<\/td><td>yes, for copper<\/td><td>no<\/td><\/tr><tr><td>Optical attenuation<\/td><td>yes, when specified<\/td><td>no<\/td><\/tr><tr><td>Optical events by distance<\/td><td>OTDR, when specified<\/td><td>no<\/td><\/tr><tr><td>Internet speed<\/td><td>no<\/td><td>can be evaluated with other tools<\/td><\/tr><tr><td>End-to-end throughput<\/td><td>no<\/td><td>iPerf and equivalent tests<\/td><\/tr><tr><td>VLAN\/DHCP\/routing<\/td><td>no<\/td><td>functional network tests<\/td><\/tr><tr><td>PoE in operation<\/td><td>not replaced by certification<\/td><td>requires dedicated checks<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A link may be certified while the application still fails because of a configuration or equipment problem. The reverse can also occur: a network may appear to \u201cwork\u201d today while the link is outside standards limits and has no margin for maintenance or future evolution.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">Network certification, certifier, and parameters: three different subjects<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To avoid conceptual overlap, it is useful to separate three layers.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Network certifier<\/strong> is the instrument used to perform field tests and compare measurements against limits.<\/li><li><strong>Certification parameters<\/strong> are measured or calculated quantities such as insertion loss, NEXT, return loss, ACR, delay, and resistance.<\/li><li><strong>Network certification<\/strong> is the complete process of planning, measurement, quality control, nonconformity handling, documentation, and acceptance.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This distinction matters in contracts. Buying or renting a certification instrument does not ensure that certification was technically executed correctly. The process depends on scope, limits, configuration, identification, and governance of results.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">The certification plan must exist before testing begins<\/h2>\n\n\n\n<div class=\"wp-block-a3a-destaque\">\n<p class=\"wp-block-paragraph\">Certification must originate in the specification. Defining class, Permanent Link\/Channel\/MPTL, report format, retesting, and acceptance criteria in the Cabling Design avoids disputes after construction is already complete.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"\/servicos\/planejamento\/projeto-de-cabeamento-estruturado\/\">Structured Cabling Design<\/a><\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">ABNT NBR 16869-1 treats certification as part of installation planning. The specification must define in advance what will be tested, which limits will apply, which configuration represents the scope, and how nonconforming results will be handled.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A certification plan can consolidate:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>quantity and identification of links;<\/li><li>standard and performance class;<\/li><li>test configuration \u2014 Permanent Link, Channel, MPTL, or another applicable model;<\/li><li>accepted instruments and adapters;<\/li><li>calibration and firmware requirements;<\/li><li>PASS, FAIL, and marginal-result criteria;<\/li><li>scope of optical tests;<\/li><li>retest policy after correction;<\/li><li>file and report naming convention;<\/li><li>delivery format for native data and PDFs;<\/li><li>integration with the port-to-outlet matrix and As Built;<\/li><li>responsibility for execution, review, and acceptance.<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">When these decisions are made only after construction, inconsistencies arise: some links are tested as Channel and others as Permanent Link, different teams select different limits, outlet names do not match the drawings, and original files become scattered.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">Copper cabling certification<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For balanced cabling, testing compares link behavior against the limits applicable to the selected class. For conventional installations, NBR 16869-1 establishes that standardized tests be performed across the entire delivered installation, except in specific cases where the client formally specifies a sample below 100%.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This means the operational rule should not be \u201ctest a few outlets to see whether the crew is installing correctly.\u201d Intermediate sampling is useful as process control, but final infrastructure acceptance must follow the contractual scope and applicable standards.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Permanent Link, Channel, and MPTL<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The test model must represent the object being accepted.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Configuration<\/td><td>What it represents<\/td><td>Typical acceptance use<\/td><\/tr><tr><td>Permanent Link<\/td><td>fixed portion between terminations<\/td><td>acceptance of the fixed passive installation<\/td><\/tr><tr><td>Channel<\/td><td>fixed infrastructure + planned cords<\/td><td>validation of the complete configured channel<\/td><\/tr><tr><td>MPTL<\/td><td>link terminated directly in a modular plug at one end<\/td><td>cameras, APs, and fixed devices when the architecture specifies MPTL<\/td><\/tr><tr><td>Direct connection<\/td><td>specific configuration without conventional outlet\/patch-panel architecture<\/td><td>dedicated uses provided for by applicable standards<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The most common mistake is selecting the test limit in the instrument based on the name printed on the cable rather than on the system being accepted. Component category and link class are not synonymous with an automatically valid report.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><img decoding=\"async\" src=\"https:\/\/a3aengenharia.com.br\/wp-content\/uploads\/2023\/07\/certificacao-de-rede-512x288.jpeg\" alt=\"Network certifier used in the field\"\/><\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">Which parameters are evaluated in copper cabling<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Parameters depend on class and configuration, but normally include continuity\/wire map, length, insertion loss, NEXT, PSNEXT, return loss, ACR relationships, delay, and other transmission requirements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The dedicated article on certification parameters explores the physical interpretation of each quantity in greater depth. For acceptance, the central point is different: the report must demonstrate that <strong>all parameters required by the selected limit<\/strong> were evaluated and that the final result is consistent with the delivered installation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A \u201cPASS\u201d summary without complete records does not replace test data, especially when audit, diagnosis, or warranty evidence may be required.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Cat5e, Cat6, and Cat6A: certification must use the correct class<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The performance class defines the limits against which the instrument compares the link. In copper installations, this includes differences in frequency range and transmission requirements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is not appropriate to test a system contracted as Class EA\/Cat6A against a lower limit simply to obtain approval. Likewise, it makes no sense to reject infrastructure specified as Class D by applying a higher-class limit that was never part of the requirement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For Class EA, planning may include alien-crosstalk assessment. NBR 16869-1 addresses specific sampling for this parameter, which is different from the conventional AUTOTEST performed on each link. This distinction must be included in the quality plan.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">PASS, FAIL, and marginal results<\/h2>\n\n\n\n<div class=\"wp-block-a3a-destaque\">\n<p class=\"wp-block-paragraph\">When the objective is to demonstrate the performance of the installed infrastructure, Technical Testing and Inspection organizes equipment, limits, identification, execution, failure diagnostics, and traceable reports.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"\/servicos\/servicos-transversais\/ensaios-e-testes\/\">Technical Testing and Inspection<\/a><\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The report must be interpreted against the configured test limit.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>PASS:<\/strong> the set of parameters meets the selected limit.<\/li><li><strong>FAIL:<\/strong> at least one parameter does not meet the requirement and the link cannot be accepted without correction and retesting.<\/li><li><strong>marginal:<\/strong> a result close to the limit within equipment uncertainty or the defined policy; its treatment must follow the quality plan and the applicable standard.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">NBR 16869-1 is clear regarding unacceptable results: failed links or channels must be reviewed, corrected, and retested until they meet the requirements. The intervention history must remain traceable.<\/p>\n\n\n\n<figure class=\"a3a-mermaid\"><svg id=\"a3a-diagram-1\" width=\"100%\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"flowchart\" style=\"max-width:min(532.3125px, 100%);height:auto;display:block;margin:0 auto\" viewBox=\"0 0 532.3125 979.359375\" role=\"graphics-document document\" aria-roledescription=\"flowchart-v2\" aria-labelledby=\"chart-title-a3a-diagram-1\"><title id=\"chart-title-a3a-diagram-1\">Cabling certification and acceptance workflow<\/title><style>#a3a-diagram-1{font-family:Roboto,sans-serif;font-size:15px;fill:var(--a3a-diag-text, #0a0a0a);}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#a3a-diagram-1 .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#a3a-diagram-1 .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear 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class=\"labelBkg\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"edgeLabel\"><p>PASS<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"edgeLabel\" transform=\"translate(113.1328125, 575.109375)\"><g class=\"label\" data-id=\"L_E_G_0\" transform=\"translate(-13.5546875, -11.25)\"><foreignObject width=\"27.109375\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" class=\"labelBkg\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"edgeLabel\"><p>FAIL<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"edgeLabel\"><g class=\"label\" data-id=\"L_G_H_0\" transform=\"translate(0, 0)\"><foreignObject width=\"0\" height=\"0\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" class=\"labelBkg\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span 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style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Test plan<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"node default\" id=\"flowchart-B-1\" transform=\"translate(253.265625, 136.75)\"><rect class=\"basic label-container\" style=\"\" x=\"-92.5390625\" y=\"-26.25\" width=\"185.078125\" height=\"52.5\"><\/rect><g class=\"label\" style=\"\" transform=\"translate(-62.5390625, -11.25)\"><rect><\/rect><foreignObject width=\"125.078125\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Identify links<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"node default\" id=\"flowchart-C-3\" transform=\"translate(253.265625, 239.25)\"><rect class=\"basic label-container\" style=\"\" x=\"-86.4609375\" y=\"-26.25\" width=\"172.921875\" height=\"52.5\"><\/rect><g class=\"label\" style=\"\" transform=\"translate(-56.4609375, -11.25)\"><rect><\/rect><foreignObject width=\"112.921875\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Set test limit<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"node default\" id=\"flowchart-D-5\" transform=\"translate(253.265625, 341.75)\"><rect class=\"basic label-container\" style=\"\" x=\"-83.6484375\" y=\"-26.25\" width=\"167.296875\" height=\"52.5\"><\/rect><g class=\"label\" style=\"\" transform=\"translate(-53.6484375, -11.25)\"><rect><\/rect><foreignObject width=\"107.296875\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Run test<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"node default\" id=\"flowchart-E-7\" transform=\"translate(253.265625, 478.4296875)\"><polygon points=\"60.4296875,0 120.859375,-60.4296875 60.4296875,-120.859375 0,-60.4296875\" class=\"label-container\" transform=\"translate(-59.9296875, 60.4296875)\"><\/polygon><g class=\"label\" style=\"\" transform=\"translate(-34.1796875, -11.25)\"><rect><\/rect><foreignObject width=\"68.359375\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Result<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"node default\" id=\"flowchart-F-9\" transform=\"translate(422.9765625, 637.609375)\"><rect class=\"basic label-container\" style=\"\" x=\"-94.7578125\" y=\"-26.25\" width=\"189.515625\" height=\"52.5\"><\/rect><g class=\"label\" style=\"\" transform=\"translate(-64.7578125, -11.25)\"><rect><\/rect><foreignObject width=\"129.515625\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Record result<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"node default\" id=\"flowchart-G-11\" transform=\"translate(113.1328125, 637.609375)\"><rect class=\"basic label-container\" style=\"\" x=\"-105.1328125\" y=\"-26.25\" width=\"210.265625\" height=\"52.5\"><\/rect><g class=\"label\" style=\"\" transform=\"translate(-75.1328125, -11.25)\"><rect><\/rect><foreignObject width=\"150.265625\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Diagnose and correct<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"node default\" id=\"flowchart-H-13\" transform=\"translate(183.19921875, 740.109375)\"><rect class=\"basic label-container\" style=\"\" x=\"-58.328125\" y=\"-26.25\" width=\"116.65625\" height=\"52.5\"><\/rect><g class=\"label\" style=\"\" transform=\"translate(-28.328125, -11.25)\"><rect><\/rect><foreignObject width=\"56.65625\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Retest<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"node default\" id=\"flowchart-I-17\" transform=\"translate(422.9765625, 740.109375)\"><rect class=\"basic label-container\" style=\"\" x=\"-101.3359375\" y=\"-26.25\" width=\"202.671875\" height=\"52.5\"><\/rect><g class=\"label\" style=\"\" transform=\"translate(-71.3359375, -11.25)\"><rect><\/rect><foreignObject width=\"142.671875\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Consolidate reports<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"node default\" id=\"flowchart-J-19\" transform=\"translate(422.9765625, 842.609375)\"><rect class=\"basic label-container\" style=\"\" x=\"-94.5703125\" y=\"-26.25\" width=\"189.140625\" height=\"52.5\"><\/rect><g class=\"label\" style=\"\" transform=\"translate(-64.5703125, -11.25)\"><rect><\/rect><foreignObject width=\"129.140625\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Integrate into As Built<\/p><\/span><\/div><\/foreignObject><\/g><\/g><g class=\"node default\" id=\"flowchart-K-21\" transform=\"translate(422.9765625, 945.109375)\"><rect class=\"basic label-container\" style=\"\" x=\"-77.203125\" y=\"-26.25\" width=\"154.40625\" height=\"52.5\"><\/rect><g class=\"label\" style=\"\" transform=\"translate(-47.203125, -11.25)\"><rect><\/rect><foreignObject width=\"94.40625\" height=\"22.5\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: table-cell; white-space: nowrap; line-height: 1.5; max-width: 200px; text-align: center;\"><span class=\"nodeLabel\"><p>Technical acceptance<\/p><\/span><\/div><\/foreignObject><\/g><\/g><\/g><\/g><\/g><\/svg><figcaption>Cabling certification and acceptance workflow<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This cycle prevents corrected failures from disappearing from the record. On large projects, the first-pass PASS rate is also an indicator of installation quality.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">How to diagnose a failure without replacing the entire link<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A FAIL does not automatically mean that the cable must be replaced. The failed parameter directs the investigation.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Primary failure<\/td><td>Causes to investigate<\/td><td>Typical action<\/td><\/tr><tr><td>Wire map<\/td><td>incorrect termination, broken conductor<\/td><td>review terminations<\/td><\/tr><tr><td>NEXT<\/td><td>excessive untwisting, connector, mixed components<\/td><td>inspect hardware and termination<\/td><\/tr><tr><td>Return loss<\/td><td>bends, deformation, impedance, connector<\/td><td>review route and connections<\/td><\/tr><tr><td>Insertion loss<\/td><td>length, temperature, cable, connections<\/td><td>verify material and route<\/td><\/tr><tr><td>Excessive length<\/td><td>route, service loops, configuration<\/td><td>confirm architecture and measurement<\/td><\/tr><tr><td>Resistance\/imbalance<\/td><td>conductor, termination, damage<\/td><td>review material and connections<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The certification process gains value when diagnosis identifies the root cause and documents the correction instead of simply repeating tests until a PASS appears.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Optical fiber certification<\/h2>\n\n\n\n<div class=\"wp-block-a3a-destaque\">\n<p class=\"wp-block-paragraph\">Optical networks require a loss budget, reference methods, connector inspection, and a clear definition of the roles of LSPM\/OLTS and OTDR. Optical Fiber Network Design closes these criteria before installation and acceptance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"\/servicos\/planejamento\/projeto-de-fibra-optica-e-redes-opticas\/\">Optical Fiber and Optical Network Design<\/a><\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Optical certification requires methods different from balanced cabling. ABNT NBR 16869-2 addresses attenuation measurement in installed optical cabling and establishes requirements for equipment, referencing, inspection, cleaning, documentation, and treatment of results.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The evaluation may involve multimode and single-mode fibers, connectors, adapters, splices, and other passive components. The method must represent the test objective and the optical loss budget of the link.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">LSPM\/OLTS vs. OTDR: different functions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">LSPM \u2014 light source and power meter \u2014 measures the total loss of the link\/channel under a defined reference configuration. OLTS systems automate this principle and may add polarity and length measurements depending on the instrument.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">OTDR characterizes the fiber by backscatter and locates events along the distance: connectors, splices, reflections, macrobends, and other loss points. It should not be treated as a simple substitute for end-to-end loss testing; the methods answer different questions.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Method<\/td><td>Main question answered<\/td><td>Use<\/td><\/tr><tr><td>LSPM\/OLTS<\/td><td>what is the total path loss?<\/td><td>attenuation-budget compliance<\/td><\/tr><tr><td>OTDR<\/td><td>where are events and losses located along the fiber?<\/td><td>characterization, diagnostics, and event documentation<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><img decoding=\"async\" src=\"https:\/\/a3aengenharia.com.br\/wp-content\/uploads\/2023\/07\/traco-otdr-512x384.jpeg\" alt=\"OTDR event trace\"\/><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Wavelengths and optical test configuration<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">NBR 16869-2 specifies test wavelengths according to fiber type. For multimode fiber, references at 850 nm and 1,300 nm are used; for single-mode fiber, 1,310 nm and 1,550 nm, within the tolerances defined by the standard.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Wavelength selection should not be left to an automatic default without review. The test plan must indicate which fibers, directions, and wavelengths will be recorded for each link.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For OTDR testing, launch fiber and a tail cord are important to characterize the initial and final interfaces correctly. Without these accessories, the instrument&#8217;s dead zone may conceal relevant events.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Connector inspection and cleaning before testing<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Contaminated connectors can increase loss, produce inconsistent results, and even damage interfaces. NBR 16869-2 requires inspection of connector end faces on launch cables, test cords, and the cabling under test, with cleaning and reinspection whenever contamination is found.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This procedure should be treated as part of the test process, not as an optional action after a poor result. Repeatedly testing a dirty interface only multiplies invalid data.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">Marginal results in optical fiber<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">NBR 16869-2 establishes that <strong>marginal results are not accepted in optical-cabling tests<\/strong>. This differs from the interpretation of some copper-cabling situations and reinforces the need to assess uncertainty, referencing, cleanliness, and configuration before declaring compliance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When an optical result is very close to the limit, the response should not be to edit the budget or choose only the more favorable direction. The method, connectors, splices, and specified loss budget must be reviewed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Calibration, adapters, firmware, and equipment condition<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Confidence in the result depends on the test system, not only on the main instrument. Adapters, cords, reference connectors, and interfaces wear over time and have a limited number of connection cycles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NBR 16869-1 requires evidence of field-equipment calibration and recommends current firmware. For fiber, NBR 16869-2 also establishes calibration and performance requirements for measurement systems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before mobilization, the responsible engineer should verify:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>valid calibration certificate;<\/li><li>instrument serial number;<\/li><li>software\/firmware version;<\/li><li>correct adapters for the configuration;<\/li><li>condition of reference cords and connectors;<\/li><li>sufficient battery and storage capacity;<\/li><li>correct date\/time;<\/li><li>project naming convention loaded into the instrument.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">100% certification vs. sampling<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For the delivered installation, NBR 16869-1 establishes standardized testing across the entire installation, except in specific cases where the client formally defines a sample below 100%.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This differs from process-control sampling during construction. Testing 10% of links midway through installation may help detect a systemic termination error, but it does not replace final certification when the contract requires 100%.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This rule should also not be confused with specific alien-crosstalk sampling for certain classes. The unit of analysis and the purpose of the test are different.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">Reports: the native file is part of the deliverable<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">NBR 16869-1 establishes that field-test results be delivered to the client in the <strong>instrument&#8217;s native electronic format<\/strong> and also recommends PDF reports when specified.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The native file is important because it preserves structured data, test configuration, measurements, and metadata that may not be visible in a summarized PDF. In audits, it helps verify that the report corresponds to the original test.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><img decoding=\"async\" src=\"https:\/\/a3aengenharia.com.br\/wp-content\/uploads\/2023\/07\/relatorio-de-certificacao-de-rede-1-791x1024.png\" alt=\"Example of a network certification report\"\/><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A robust handover package should contain:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>instrument-native files;<\/li><li>consolidated PDFs when applicable;<\/li><li>master link matrix;<\/li><li>PASS\/FAIL\/retest map;<\/li><li>calibration certificate;<\/li><li>list of instruments and adapters;<\/li><li>operator identification and dates;<\/li><li>correction records;<\/li><li>optical documentation and OTDR traces when specified.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Traceability: report, rack, port, and outlet must use the same language<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A technically correct report loses much of its value when the link name does not match the drawings, patch panel, and installed label.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NBR 16869-1 treats identification and records as part of cabling administration. The database can associate cable, termination points, pathways, spaces, equipment, and certification date.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">During design, an identification convention should be defined before testing. For example, building\u2013floor\u2013rack\u2013patch panel\u2013port can generate a unique identifier that also appears on the drawing and in the certifier file.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This makes it possible to locate a FAIL quickly, compare the result with the physical route, and retain a history of future interventions.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">How to integrate certification and As Built<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The As Built should not be only a set of revised drawings. For structured cabling, it needs to represent the final state of the links and their performance evidence.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The final matrix can relate:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Identifier<\/td><td>Origin<\/td><td>Destination<\/td><td>Class\/fiber<\/td><td>Length<\/td><td>Result<\/td><td>File<\/td><td>Note<\/td><\/tr><tr><td>TR01-PP01-001<\/td><td>Rack TR01<\/td><td>TO-001<\/td><td>Class E<\/td><td>measured<\/td><td>PASS<\/td><td>native file<\/td><td>\u2014<\/td><\/tr><tr><td>TR01-PP01-002<\/td><td>Rack TR01<\/td><td>TO-002<\/td><td>Class E<\/td><td>measured<\/td><td>PASS after retest<\/td><td>native file<\/td><td>connector reterminated<\/td><\/tr><tr><td>FO-BB-001<\/td><td>DIO A<\/td><td>DIO B<\/td><td>OS2<\/td><td>measured<\/td><td>PASS<\/td><td>LSPM + OTDR<\/td><td>backbone link<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This relationship turns the result into a maintenance asset. Years later, the team can compare a new measurement against the delivery baseline.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">Certification as a contractual acceptance criterion<\/h2>\n\n\n\n<div class=\"wp-block-a3a-destaque\">\n<p class=\"wp-block-paragraph\">In contracts with separate installer, inspection team, and client, certification must be treated as quality evidence: scope review, native files, retests, and consistency with the As Built should be part of acceptance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"\/servicos\/implementacao\/comissionamento\/\">Engineering Commissioning<\/a><\/p>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">In implementation contracts, certification should be a delivery requirement rather than an additional service discovered at the end of construction. The specification must define what constitutes compliance, which documents will be delivered, and how failures will be handled.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">An acceptance criterion may establish, for example:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>100% of in-scope links tested when applicable;<\/li><li>no pending FAIL results;<\/li><li>retests clearly identified;<\/li><li>native files and reports received;<\/li><li>valid calibration;<\/li><li>consistency with labels and As Built;<\/li><li>specified optical traces delivered;<\/li><li>punch list cleared or formally accepted.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Signing an acceptance certificate without this evidence transfers to operations an uncertainty that should have been resolved during construction.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Certification, technical inspection, and Owner&#8217;s Engineering<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In projects with separate client and installer roles, technical inspection must verify more than the existence of PDFs. Scope, naming convention, sampling\/100%, limits, calibration, failures, retests, and consistency with the design must be checked.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Testing can be executed by the installer within the quality plan or by an independent company, depending on the contractual model. For critical projects, witnessing samples, reviewing native files, and performing independent verification tests reduce the risk of inappropriate acceptance.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">How to specify the service without locking in a certifier brand<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The specification should require metrological capability compatible with the class and configuration rather than simply stating \u201cuse Fluke equipment.\u201d Families such as Fluke DSX, TREND LanTEK, and Softing WireXpert are examples of available instruments, but equivalence must be evaluated by range, accuracy, adapters, limits, calibration, reporting, and support for the required configuration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A technical clause may require:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>field equipment compatible with the tested class;<\/li><li>accuracy in accordance with applicable standards;<\/li><li>Permanent Link\/Channel\/MPTL adapters when required;<\/li><li>valid calibration;<\/li><li>current firmware;<\/li><li>native-file export;<\/li><li>instrument and operator identification in the report;<\/li><li>ability to audit the results.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This preserves competition without reducing the technical standard.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common network-certification errors<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>treating certification as a speed test;<\/li><li>testing only continuity and declaring the network \u201ccertified\u201d;<\/li><li>selecting a lower limit than the contracted requirement;<\/li><li>mixing Permanent Link and Channel without recording the difference;<\/li><li>testing with inappropriate adapters;<\/li><li>ignoring calibration and firmware;<\/li><li>accepting FAIL without correction\/retest;<\/li><li>losing the instrument-native file;<\/li><li>delivering PDFs with names that do not match the As Built;<\/li><li>using OTDR as an automatic substitute for optical loss measurement;<\/li><li>testing fiber without inspecting and cleaning connectors;<\/li><li>omitting launch fiber\/tail cord when required for OTDR;<\/li><li>certifying a sample and declaring 100% of the installation accepted without contractual basis;<\/li><li>manually editing reports to hide outstanding issues;<\/li><li>failing to consolidate retest history.<\/li><\/ul>\n\n\n\n\n<h2 class=\"wp-block-heading\">Certification in retrofit projects and existing-network diagnostics<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In an existing installation, certification can be used to decide what to retain, correct, or replace. The strategy differs from acceptance of new construction: there may be undocumented links, connectors from different generations, modified patch panels, and unknown routes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The assessment should combine physical inspection and testing. An initial inventory can separate links into groups: compliant and reusable; recoverable through correction; incompatible with the future application; and impossible to certify because of damage or unsuitable architecture.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This approach avoids mass cable replacement based only on age and directs CAPEX toward demonstrated limitations.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Certification as part of commissioning and handover<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Certification of the passive layer is one step in the delivery process, not the entire process. In network and systems commissioning, it connects to physical inspection, energization, PoE, switch configuration, functional testing, redundancy, and end-to-end validation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Technical handover consolidates the evidence: design, As Built, inventory, certification reports, configurations, warranties, manuals, and outstanding issues. The network is ready for operation only when the documentation represents the system actually delivered.<\/p>\n\n\n\n\n<h2 class=\"wp-block-heading\">Final considerations<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Network certification is a quality and acceptance discipline. The instrument measures; the engineering process defines what to measure, how to interpret the results, how to handle failures, and which evidence demonstrates delivery.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For copper, the Permanent Link, Channel, or MPTL configuration must reflect the object being accepted. For fiber, LSPM\/OLTS and OTDR have different functions and depend on appropriate referencing, cleaning, and documentation. In both media, calibration, identification, and native files are essential parts of traceability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When certification is planned from the specification stage and integrated with the As Built and commissioning, it ceases to be a package of PDFs and becomes technical evidence that can be used throughout the infrastructure life cycle.<\/p>\n\n\n\n<div class=\"wp-block-a3a-destaque\">\n<p class=\"wp-block-paragraph\">When certification involves multiple systems \u2014 copper, fiber, Wi-Fi, video surveillance, PoE, and active equipment \u2014 Telecommunications Design coordinates requirements, interfaces, and performance criteria so that tests reflect the actual architecture.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"\/servicos\/planejamento\/projeto-de-telecomunicacoes\/\">Telecommunications Design<\/a><\/p>\n<\/div>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Technical references<\/summary>\n<p class=\"wp-block-paragraph\">[1] ASSOCIA\u00c7\u00c3O BRASILEIRA DE NORMAS T\u00c9CNICAS. ABNT NBR 16869-1:2020 \u2014 Cabeamento estruturado \u2014 Parte 1: requisitos para planejamento. Rio de Janeiro: ABNT, 2020. Available at: <a href=\"https:\/\/www.abntcatalogo.com.br\/\">https:\/\/www.abntcatalogo.com.br\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[2] ASSOCIA\u00c7\u00c3O BRASILEIRA DE NORMAS T\u00c9CNICAS. ABNT NBR 16869-2:2021 \u2014 Cabeamento estruturado \u2014 Parte 2: ensaio do cabeamento \u00f3ptico. Rio de Janeiro: ABNT, 2021. Available at: <a href=\"https:\/\/www.abntcatalogo.com.br\/\">https:\/\/www.abntcatalogo.com.br\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[3] ASSOCIA\u00c7\u00c3O BRASILEIRA DE NORMAS T\u00c9CNICAS. ABNT NBR 14565 \u2014 Cabeamento estruturado para edif\u00edcios comerciais. Rio de Janeiro: ABNT. Available at: <a href=\"https:\/\/www.abntcatalogo.com.br\/\">https:\/\/www.abntcatalogo.com.br\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[4] ISO\/IEC. ISO\/IEC 11801-1 \u2014 Information technology \u2014 Generic cabling for customer premises. Available at: <a href=\"https:\/\/www.iso.org\/standard\/66182.html\">https:\/\/www.iso.org\/standard\/66182.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[5] ISO\/IEC. ISO\/IEC 14763-3 \u2014 Information technology \u2014 Implementation and operation of customer premises cabling \u2014 Testing of optical fibre cabling. Available at: <a href=\"https:\/\/www.iso.org\/standards.html\">https:\/\/www.iso.org\/standards.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[6] TIA. ANSI\/TIA-568.3-E \u2014 Optical Fiber Cabling and Components Standard. Available at: <a href=\"https:\/\/tiaonline.org\/standards\/\">https:\/\/tiaonline.org\/standards\/<\/a><\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Frequently asked questions<\/summary>\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-o-que-certifica-o-de-rede-18530cf6\"><strong class=\"schema-faq-question\">What is network certification?<\/strong> <p class=\"schema-faq-answer\">It is the technical process that demonstrates whether installed cabling meets standards limits, the design, and acceptance criteria through testing, failure handling, and traceable documentation.<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-certifica-o-de-rede-teste-de-velocidade-de929aac\"><strong class=\"schema-faq-question\">Is network certification a speed test?<\/strong> <p class=\"schema-faq-answer\">No. Certification validates the passive physical layer. Throughput, internet service, VLANs, and active-equipment performance require their own functional tests.<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-todos-os-pontos-precisam-ser-certificados-c2d67aa6\"><strong class=\"schema-faq-question\">Do all outlets need to be certified?<\/strong> <p class=\"schema-faq-answer\">NBR 16869-1 establishes standardized tests across the entire delivered installation, except in specific cases where the client formally defines a sample below 100%. The contractual scope must make this explicit.<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-qual-a-diferen-a-entre-permanent-link-e-channel-d94ef00e\"><strong class=\"schema-faq-question\">What is the difference between Permanent Link and Channel?<\/strong> <p class=\"schema-faq-answer\">Permanent Link evaluates the fixed infrastructure of the link. Channel includes the cords and connections that form the complete channel. The selected model must correspond to the object being accepted.<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-o-que-fazer-com-um-resultado-fail-221588bc\"><strong class=\"schema-faq-question\">What should be done with a FAIL result?<\/strong> <p class=\"schema-faq-answer\">The link must be diagnosed, corrected, and retested until it meets the requirements. The failure and retest history must remain traceable.<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-qual-a-diferen-a-entre-lspm-olts-e-otdr-54b1c4bd\"><strong class=\"schema-faq-question\">What is the difference between LSPM\/OLTS and OTDR?<\/strong> <p class=\"schema-faq-answer\">LSPM\/OLTS measures the total loss of the optical path. OTDR characterizes events along the fiber and helps locate splices, connectors, and losses by distance.<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-o-arquivo-nativo-do-certificador-deve-ser-entreg-0e72bdf9\"><strong class=\"schema-faq-question\">Should the certifier&#8217;s native file be delivered?<\/strong> <p class=\"schema-faq-answer\">Yes. NBR 16869-1 establishes delivery of results in the instrument&#8217;s native electronic format and recommends PDF reports when specified.<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-certifica-o-deve-fazer-parte-do-as-built-c50db175\"><strong class=\"schema-faq-question\">Should certification be part of the As Built?<\/strong> <p class=\"schema-faq-answer\">Yes. Results should be linked to link identifiers, drawings, and the port-to-outlet matrix to form the technical baseline of the delivered installation.<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-obrigat-rio-usar-certificador-de-uma-marca-espec-bd8cb1de\"><strong class=\"schema-faq-question\">Is a certifier from a specific brand mandatory?<\/strong> <p class=\"schema-faq-answer\">No. The requirement should be metrological capability, range, accuracy, adapters, calibration, and reporting compatible with the required class and configuration.<\/p><\/div><\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Additional technical materials<\/summary>\n<h4 class=\"wp-block-heading\">Related services<\/h4>\n\n<ul class=\"wp-block-list\"><li><a href=\"\/servicos\/servicos-transversais\/ensaios-e-testes\/\">Technical Testing and Inspection<\/a><\/li><li><a href=\"\/servicos\/implementacao\/comissionamento\/\">Engineering Commissioning<\/a><\/li><li><a href=\"\/servicos\/planejamento\/projeto-de-cabeamento-estruturado\/\">Structured Cabling Design<\/a><\/li><li><a href=\"\/servicos\/planejamento\/projeto-de-fibra-optica-e-redes-opticas\/\">Optical Fiber and Optical Network Design<\/a><\/li><li><a href=\"\/servicos\/planejamento\/projeto-de-telecomunicacoes\/\">Telecommunications Design<\/a><\/li><\/ul>\n\n<h4 class=\"wp-block-heading\">Related solutions<\/h4>\n\n<ul class=\"wp-block-list\"><li><a href=\"\/solucoes\/engenharia-de-redes-e-telecomunicacoes\/cabeamento-estruturado\/\">Structured Cabling<\/a><\/li><li><a href=\"\/solucoes\/engenharia-de-redes-e-telecomunicacoes\/redes-opticas\/\">Optical Networks<\/a><\/li><\/ul>\n\n<h4 class=\"wp-block-heading\">Core content on this topic<\/h4>\n\n<ul class=\"wp-block-list\"><li><a href=\"\/conteudo\/artigos-tecnicos\/parametros-de-teste-para-certificacao-de-cabos-de-par-trancado\/\">Certification Test Parameters<\/a><\/li><li><a href=\"\/conteudo\/artigos-tecnicos\/certificador-de-rede\/\">Network Certifier<\/a><\/li><li><a href=\"\/conteudo\/artigos-tecnicos\/nbr-16869\/\">NBR 16869<\/a><\/li><li><a href=\"\/conteudo\/artigos-tecnicos\/nbr-14565-cabeamento-estruturado\/\">NBR 14565<\/a><\/li><\/ul>\n\n<h4 class=\"wp-block-heading\">Related technical content<\/h4>\n\n<ul class=\"wp-block-list\"><li><a href=\"\/conteudo\/artigos-tecnicos\/fusao-de-fibra-optica-o-que-e-e-quando-utilizar\/\">Optical Fiber Fusion Splicing<\/a><\/li><li><a href=\"\/conteudo\/artigos-tecnicos\/backbone-de-fibra-optica\/\">Optical Fiber Backbone<\/a><\/li><li><a href=\"\/conteudo\/artigos-tecnicos\/distribuidor-interno-optico-dio\/\">Optical Distribution Frame (DIO)<\/a><\/li><li><a href=\"\/conteudo\/artigos-tecnicos\/projeto-executivo-de-cabeamento-estruturado\/\">Structured Cabling Design<\/a><\/li><li><a href=\"\/conteudo\/artigos-tecnicos\/cabo-utp-tudo-que-voce-precisa-saber\/\">UTP Cable<\/a><\/li><\/ul>\n<\/details>\n","protected":false},"excerpt":{"rendered":"<p>Understand copper and fiber network certification: test planning, Permanent Link, MPTL, LSPM\/OTDR, PASS\/FAIL, reports, As Built, and acceptance criteria.<\/p>\n","protected":false},"author":1,"featured_media":32600,"parent":0,"template":"","meta":{"_a3a_global_related_solutions":[],"_a3a_global_related_services":[],"_a3a_global_related_materials":[],"_a3a_post_lang":"en-us","_a3a_translation_group_id":"6f362518-6694-4a11-909c-c4714bebddf7","_a3a_i18n_canonical_slug":"network-certification-testing-reports-technical-acceptance","_a3a_prod_post_id":"","_a3a_lang_url_en-us":"","_a3a_lang_url_es-es":""},"categories":[],"segments":[],"mercados":[],"etapas":[],"class_list":["post-80607","articles","type-articles","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/articles\/80607","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/articles"}],"about":[{"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/types\/articles"}],"author":[{"embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":15,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/articles\/80607\/revisions"}],"predecessor-version":[{"id":80622,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/articles\/80607\/revisions\/80622"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/media\/32600"}],"wp:attachment":[{"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/media?parent=80607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/categories?post=80607"},{"taxonomy":"segments","embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/segments?post=80607"},{"taxonomy":"mercados","embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/mercados?post=80607"},{"taxonomy":"etapas","embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/etapas?post=80607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}