Outdoor telecommunications cabinet for connecting an external communication network to a user network , made of a single piece case comprising: - a first area associated with a first closure door , housing: • a plurality of optic adapters having opposite first and second sides; • a corresponding plurality of connecting optical fibres for connection to optical fibres of the user network , the connecting optical fibres having opposite free ends and terminated ends, terminated with respective optical fibre connectors that are respectively engaged with the first sides of the adapters , characterized in further comprising: • a corresponding plurality of optical fibre patch cords having opposite first and second ends terminated with respective optical fibre connectors , the optical fibre connectors terminating the first ends being respectively engaged with the second sides of the adapters ; and - a second area associated with a second closure door , housing: • a connector holder having a plurality of seats adapted to temporaly hold the optical fibre connectors terminating the second ends of the patch cords , • a space adapted to house, after installation on site of the cabinet , fibre optic cabling and accessories for connection to the external communication network , • the connector holder acting as a temporary parking area for the optical fibre connectors terminating the second ends of the patch cords , waiting to be connected to said optical fibre cabling and/or accessories for connection to the external communication network . - a first area associated with a first closure door , housing: • a plurality of optic adapters having opposite first and second sides; • a corresponding plurality of connecting optical fibres for connection to optical fibres of the user network , the connecting optical fibres having opposite free ends and terminated ends, terminated with respective optical fibre connectors that are respectively engaged with the first sides of the adapters , • a plurality of optic adapters having opposite first and second sides; • a corresponding plurality of connecting optical fibres for connection to optical fibres of the user network , the connecting optical fibres having opposite free ends and terminated ends, terminated with respective optical fibre connectors that are respectively engaged with the first sides of the adapters , • a corresponding plurality of optical fibre patch cords having opposite first and second ends terminated with respective optical fibre connectors , the optical fibre connectors terminating the first ends being respectively engaged with the second sides of the adapters ; and - a second area associated with a second closure door , housing: • a connector holder having a plurality of seats adapted to temporaly hold the optical fibre connectors terminating the second ends of the patch cords , • a space adapted to house, after installation on site of the cabinet , fibre optic cabling and accessories for connection to the external communication network , • the connector holder acting as a temporary parking area for the optical fibre connectors terminating the second ends of the patch cords , waiting to be connected to said optical fibre cabling and/or accessories for connection to the external communication network . • a connector holder having a plurality of seats adapted to temporaly hold the optical fibre connectors terminating the second ends of the patch cords , • a space adapted to house, after installation on site of the cabinet , fibre optic cabling and accessories for connection to the external communication network , • the connector holder acting as a temporary parking area for the optical fibre connectors terminating the second ends of the patch cords , waiting to be connected to said optical fibre cabling and/or accessories for connection to the external communication network . <EOS>