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

Busbar installation project in Spain by NeklanDC, recognised for safety and technical excellence

Data centre project in Spain: award-winning busbar installation for its safety

NeklanDC, a Telenco subsidiary, delivered in Spain an award-winning busbars installation for safety. A strategic project showcasing technical expertise, autonomy, and operational excellence for Europe’s growing datacentre sector.

Telenco’s composite telecom pole workshop in Moirans, France, reflecting a sustainable industrial approach

Responsible manufacturing of composite telecom poles

Telenco manufactures its telecom poles in Moirans through a local and responsible process: reused facility, reduced impacts, strict safety and strong CSR principles.

Telenco and NGIS presenting smart connectivity solutions at NetworkX 2025 in Paris

Smart connectivity solutions for critical environments on display at Network X

Telenco et NGIS exposent leurs solutions de connectivité pour environnements critiques au NetworkX 2025 à Paris. RDV stand D2 pour découvrir l’offre XG-RF et rencontrer nos spécialistes.

Installing EAE busbar trunking in a hyperscale data centre — Telenco / Neklan DC

Success story: implementation of a busbar trunking system in a hyperscale data centre

Telenco, via Neklan DC, installed an EAE busbar trunking power system in a hyperscale data centre: detailed design, coordinated installation with custom firestops, and full testing/commissioning for reliable, scalable, redundant power.

Telenco hybrid cabling solution for DAS indoor deployments in critical environments

Wireless Indoor Networks: Simplifying and Securing Critical Deployments

Telenco offers a complete hybrid solution to secure wireless indoor networks in critical environments. B2Ca-compliant, scalable (4G to 6G) and quick to install, it ensures performance, safety and end-to-end reliability.

Skypark Business Center, Luxembourg — Multi-Operator Active DAS deployment by NGIS (Telenco Group)

NGIS equips Skypark Luxembourg with developer-driven DAS

At Skypark Luxembourg, NGIS (Telenco Group) is deploying a developer-driven Multi-Operator Active DAS, engineered with a digital twin and MIMO to provide seamless 4G/5G coverage across this flagship smart-building project.

Rainford DCI rack deployed in a compact cable landing station near the coast

Enabling subsea connectivity with DCI network racks

Optimise data centre connectivity with Rainford’s DCI network rack: compact, robust and designed for high density deployments. A scalable, durable solution for tomorrow’s evolving interconnect architectures.

Telenco 2024 CSR Report – Sustainability in Action with Global Teams

2024 CSR Report: Telenco strengthens its sustainable commitments

Telenco releases its 2024 CSR Report, highlighting strong commitments to climate action, inclusion, workplace wellbeing, cybersecurity, and responsible industry.

apheon challenge 2025

Societal commitment: Telenco steps up for youth integration through sport

130 Telenco employees joined the APHEON 2025 challenge, raising €8,076 for Sport dans la Ville. A meaningful CSR action supporting youth inclusion through sport.

connected city, smart city ftth rollout

NE4 FTTH Solutions to optimise final connections in Germany

Telenco addresses Germany’s FTTH market challenges with standardised, subsidy-ready NE4 solutions. Designed for operators, they enable faster rollouts and help turn passed homes into active subscribers in a competitive digital landscape.

Breakdown of Telenco Group's carbon emissions by scopes – 2024 footprint

61,677 tCO₂e in 2024: Telenco reinforces its emission reduction strategy

Telenco publishes its 2024 carbon footprint: 61,677 tCO₂e. 97% of emissions fall under scope 3. Eco-design remains our main lever, with actions focused on materials, transport, waste, and energy.

eline preconnected extension boxes

Discreet deployment of optical fibre: eline® pre-connected Rolling-boxes

Telenco’s eline® Rolling-boxes enable discreet and high-performance fiber deployment. Pre-terminated, compact, and easy to install, they integrate seamlessly into any home without heavy work—ideal for FTTR and constrained environments.