Contact
29 Sept 2022

Eline® OTB: for simple and discreet optical transitions

Presentation of the Eline BTO optical termination box

Telenco' design department has responded to the demand for a box that allows four splices to be made for the transition or repair of fibre optic cables. By designing the OTB Eline® optical transition box, Telenco provides telecom engineers and installers with the ideal solution to route or repair cables easily and discreetly.


A versatile box for two distinct applications 

The Telenco box, with its rear exit, provides a discreet transition between the exterior and interior, offering a more aesthetic connection

With a capacity of up to 4 FO, the Eline® OTB allows splicing between the fibres of 2 optical drop cables. Thanks to the outlet at the back of the box, the entry point into the housing is invisible from the front. The transition from outside to inside is thus made discreetly, allowing a more aesthetic connection.


The Eline® optical transition box can also be used as a repair box between two external cables or as an extension. Its waterproof and impact resistant characteristics allow it to be installed with confidence on facades and poles


Desgined to be both compact and spacious

The dimensions of the Eline® OTB (W 12cm x H 10cm x D 3cm) make it a discreet box that will fit perfectly on the facades of individual or collective housing. Its trapezoidal shape with rounded top corners harmoniously follows the cables stored inside and gives it a certain softness, which is more pleasant to the eye when installed on a facade or a post. This unique shape and size also makes the OTB easily distinguishable when installed near other enclosures. 

The compactness of the Eline® OTB does not affect the size of the two separate, spacious storage areas available inside, which can handle long lengths of 900µm and 250µm and thus facilitate installation.


The Eline® BTO is extremely compact without compromising on space in the coiling zones, making it possible to manage long lengths of 900µm and 250µm

Easy, quick and intuitive installation 

Installation of the Eline® Optical Transition Box is very simple. The BTO has two main mounting holes at the back and two additional holes for rework.

The design of the OTB also allows for discreet installation on the facade, under roof downspouts. Thanks to an optimised slide opening, the box can be installed within 2 centimetres of a cornice. .

Also read

NGIS team working on a VCA** certified wireless project

NGIS obtains VCA** certification for its wireless projects

NGIS, a Telenco Group subsidiary, has obtained VCA** certification, strengthening its HSE organisation and ability to manage complex wireless and telecom projects.

Three open WGP FL enclosures of different capacities, showing splice cassettes and fibre optic connections

WGP FL (BEP): a modular solution for every project

The WGP FL series (BEP) is a modular fibre optic building entry point in 5 versions, from 6 to 144 fibres. NE3/NE4 cable entry modules, splice cassettes, a generous slack storage area and IP55 protection simplify network deployment.

Passive active and hybrid DAS comparison for indoor 5G coverage

Which DAS architecture should you choose for indoor 5G coverage?

Compare passive, active and hybrid DAS architectures to design reliable indoor 5G coverage for your building, operators and future network needs.

BEP-XS compact all-in-one fibre optic enclosure

BEP-XS: The compact, all-in-one solution for simplified deployments

The BEP-XS is an all-in-one solution that simplifies fibre deployments. It combines BEP, floor box and OTO functions, with wall, flush or DIN rail mounting. Ideal for residential projects and network extensions.

Indoor mobile coverage solution (DAS / small cells) installed in a building

Why does mobile coverage drop inside buildings?

Offices, factories, hospitals… mobile signal drops where it's needed most. Modern insulating materials and higher 5G frequencies make indoor connectivity a major infrastructure challenge. For 13 years, Telenco has been deploying dedicated solutions

Telenco blog article about fiber optic deployment flexibility displayed on a laptop screen.

Our fibre optic solutions for NE4 deployments in Germany

Skilled labour shortages and tight deadlines: Telenco addresses German market challenges with the Future Line range. Hestia OTO, floor boxes, WGP BEP XS… a complete portfolio for fast, modular FTTH deployments.

iBwave and Ranplan software displayed on screens, tools integrating Telenco's XG-RF® and XG-optic® indoor mobile solutions

XG-RF® and XG-optic® indoor mobile solutions now available in iBwave and Ranplan

These Telenco passive solutions can be directly leveraged by engineers within their models, in line with real-world field constraints. They ensure seamless continuity between the design and deployment phases, with no gaps between planning and implementation.

Young participants visiting Telenco facilities as part of the Passe Décisive programme with Sport dans la Ville

Telenco welcomes young people from the Passe Décisive programme

Telenco welcomed six young participants from the Passe Décisive programme for a workplace immersion. The visit combined an overview of company activities with practical discussions on career access and employment.

Strategic partnership between Telenco and Zyxel for indoor mobile coverage ActiveDAS solutions

Telenco becomes exclusive distributor of Zyxel ActiveDAS solutions for indoor mobile networks

Through a strategic partnership with Zyxel, Telenco expands its Mobile Networks portfolio with ZoneDAS ActiveDAS solutions. A new approach to deploy high-performance, scalable indoor mobile networks suitable for sites of all sizes.

Telenco awarded CDP B rating for climate change transparency in 2025

Telenco’s environmental efforts recognised with ‘B’ for transparency

Telenco has been awarded a B rating by CDP for its climate transparency in 2025, among nearly 20,000 companies assessed. The recognition highlights the quality of its reporting, risk management and commitment to a low-carbon, sustainable economy.

RED Directive cybersecurity requirements for 4G and 5G repeaters in mobile networks

RED Directive and cybersecurity: a new standard for radio equipment

The RED Directive introduces cybersecurity requirements for radio equipment. A major change for 4G/5G repeaters, now considered active components of mobile networks and subject to stricter regulatory and security standards.

NGIS and Telenco team showcasing 5G indoor solutions at Mobile World Congress 2026

Indoor connectivity: a critical challenge for modern infrastructures

Telenco and NGIS develop tailored indoor 5G connectivity systems for high-demand environments. Discover their full-service offer and meet the team at MWC 2026.