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Title / Investigate, test, locate and repair faults in the telecommunications optical fibre network
Level / 3 / Credits / 10
Purpose / This unit standard covers fundamental logical and systematic fault finding techniques for telecommunications optical fibre networks.
People credited with this unit standard are able to:
– describe fundamental techniques to identify the location and cause of faults in telecommunications optical fibre networks;
– fault incident report or request is received by Service Technician;
– carry out basic fault location and restoration of telecommunications optical fibre networks;
– fault is repaired and service restoration confirmed with customer.
Classification / Telecommunications > Telecommunications - Service Delivery
Available grade / Achieved
Guidance Information
1 References
Electricity Act 1992;
Electricity (Safety) Regulations 2010;
Health and Safety in Employment Act 2015 and associated regulations;
and all subsequent amendments and replacements.
2 Definitions
Enterprise practice – those practices and procedures that have been promulgated by the company or enterprise for use by their employees.
Fundamental technique – for the purposes of this unit standard means having some relevant skills for the subject matter with the ability to use that skill to interpret available information.
Industry practice – those practices that competent practitioners within the industry recognise as current industry best practice, including standard operating procedures.
Telecommunication systems refers to the network supplying the service to the end customer.
3 Range
Faults may be at the level of electronic components, printed circuit boards, cards, wiring, electromechanical components, electromagnetic components, or other units or elements within larger systems such as telecommunications systems.
Evidence is required of ten different faults on different telecommunications systems or services.
4 The emphasis is on diagnosis using logical analysis of symptoms, observation, and measurement, rather than by trial and error.
5 Electrical, radiation, and workshop or laboratory safety practices are to be observed at all times.
6 All measurements are to be expressed in Système Internationale (SI) units and multipliers.
7 All activities and evidence presented for all outcomes and performance criteria in this unit standard must be in accordance with legislation, policies, procedures, ethical codes, Standards, applicable site and enterprise practice, and industry practice; and, where appropriate, manufacturers’ instructions, specifications, and data sheets.
Outcomes and performance criteria
Outcome 1
Describe fundamental techniques to identify the location and cause of faults in telecommunications optical fibre networks.
Performance criteria
1.1 Techniques used to diagnose faults in telecommunications optical fibre networks are described.
Range techniques include but are not limited to – observation, simulation, measurement, identification of function loss, comparison, previous fault data including frequency of occurrence, manufacturers' documentation and diagnostic data, built-in diagnostics.
Outcome 2
Action fault incident report or service investigation request.
Performance criteria
2.1 Job request is accepted within company and client required time frames.
2.2 Optical fibre reticulation details are obtained for the affected circuit/service.
2.3 Items and material required are purchased or obtained from stock as per company requirements.
2.4 Contact is made with customer confirming receipt of incident report, requesting any further details that may be of assistance and confirming appointment.
Outcome 3
Carry out basic fault location and restoration of telecommunications optical fibre networks.
Performance criteria
3.1 Select test equipment and complete tests to confirm the nature of the fault.
3.2 Evaluate remote restoration methods and procedures and apply as appropriate.
3.3 Identify and apply site arrival procedures.
Range log in as on-site, visual inspection of site for damage, visual inspection of alarms, determine appropriate diagnostic procedure, health and safety procedures.
3.4 Select appropriate diagnostic tools and or equipment.
3.5 Faults are located and causes are found through logical analysis of symptoms, observations, simulation, and measurements.
Range may include but is not limited to – common alarms, LEDs, manufacturer’s diagnostic procedures, resetting of CPE.
3.6 Diagnostic tests do not impact on the performance of existing services.
3.7 Interpret test results to identify faulty system component(s).
Range may include but is not limited to – CPE(s), cable(s), component(s), configuration.
3.8 Repair or replace faulty system component(s) in accordance with industry practice.
Outcome 4
Repair fault and confirm service restoration with customer.
Performance criteria
4.1 If further restoration work is found to be required, customer is offered an alternative service until permanent repairs made.
4.2 Service restoration is confirmed with customer.
4.3 Customer is supplied any records of test results and repair work completed as they require.
4.4 Service request is completed and signed off in accordance with industry practice and client requirements.
Planned review date / 31 December 2022Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for Assessment /Registration / 1 / 28 September 2017 / N/A
Consent and Moderation Requirements (CMR) reference / 0101
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Comments on this unit standard
Please contact the Infrastructure Industry Training Organisation if you wish to suggest changes to the content of this unit standard.
Infrastructure ITOSSB Code 101813 / Ó New Zealand Qualifications Authority 2017