Training courses

Certified Optical Fibre Installer (COFI): Core Networks


Written and developed by Optical Technology Training Ltd and licensed to CrossConnect Training.


Available as a public course or an onsite course.

Duration: 5 days



This course is designed specifically for installation and maintenance staff working on core telecom networks. It provides a broad knowledge of the components and equipment and highlights good working practices in order to inspire a professional approach to the job role. Practical sessions build the skills required to install, joint, terminate and test external fibre optic cabling links from end to end locations.


The syllabus shown here is designed for staff involved with core networks.

All versions of this certification can be customised to meet specific requirements. Our intention is to provide the 'very best of class' installation training for corporate customers that require professional staff trained up to meet the detailed needs of their sector.

  • Hands-on experience

    Hands-on practical sessions using a range of equipment.

  • Electronic resources

    Receive a USB drive with extra resources including reference information and review exercises.

  • Comprehensive manual

    Receive a comprehensive, up-to-date, indexed course manual.

  • COFI status

    Pass the assessment to gain Certified Optical Fibre Installer (COFI) status.

  • appreciate how singlemode optical fibres work and the issues that can affect performance

  • recognise telecoms link components and appreciate why different types are required for different environments

  • handle fibre optic cable and components correctly to ensure optimum performance

  • work safely on fibre optic core networks

  • prepare fibre optic cabling for splicing within splice closures and ODFs

  • fusion splice and manage fibres in a splice closure

  • joint a customer drop cable into a main network cable

  • terminate fibre optic cables by splicing on pre-terminated pigtails or splice on connectors in an ODF

  • manage cabling in an ODF

  • carry out continuity and insertion loss testing

  • use an OTDR correctly for optimum testing and troubleshooting of fibre optic links

  • make customer connections & patch circuits

  • methodically troubleshoot cabling links

This course is a hands on task based, practical course for installation teams. It starts from basics so no prior knowledge is required but aims to take delegates through to a professional level in skills, knowledge and attitude. It also helps to remove incorrect working habits which might have been picked up from other cabling jobs. It can help if a team attends the course together along with their project supervisor or manager so everyone ends up working to the same professional standards.


Typical job roles of attendees include: installation or cabling technician or engineer; project supervisor.


This course does not contain practical sessions on cable placement, but information on different cable placement methods & techniques is available in the additional resources.


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more COFI courses

Certified Optical Fibre Installer (COFI): Enterprise Networks

Designed for staff involved with standard enterprise networks. Practical sessions build the skills required to install, joint, terminate and test fibre optic cabling links.

Certified Optical Fibre Installer (COFI): Bespoke Versions

The course can be customised to cover harsh environments, industrial applications and data centres as required. Contact us to discuss your specific requirements.

This course is available for small groups of delegates from one organisation

Contact us to discuss your requirements and to obtain a quote


Contact us
  •   Oakfield Business & Training Centre,
         39 Carr Lane, Shipley, BD18 2NQ
  •   0333 800 1980
  • info@crossconnecttraining.com


  • CrossConnect Training is an FIA Corporate Member