Designing network infrastructure for operational hospital refurbishments

Refurbishing a hospital while it remains in operation is one of the most demanding infrastructure challenges in construction. Every trade working in a clinical environment must coordinate around patient safety, infection control protocols, noise restrictions, limited working hours, and the fundamental constraint that the building cannot stop functioning while the work takes place.

For network infrastructure specifically, this creates a set of pressures that standard approaches to cabling design are poorly equipped to handle.
The decisions made at specification stage - before a single cable is pulled - determine whether the network refurbishment becomes a manageable phased programme or a prolonged source of clinical disruption. Getting those decisions right requires understanding not just what the network needs to deliver, but how the infrastructure can be installed in an environment that is simultaneously trying to provide patient care.

Why traditional copper refurbishments create disproportionate disruption

In a standard copper-based LAN refurbishment, Cat 6A or Cat 6 cable bundles running from floor distributors to outlet points throughout the building represent the majority of the physical installation work. Those bundles are large. In a well-populated hospital ward or department, the cable pathway between the floor distributor and the furthest endpoint may carry dozens of individual cables, each requiring its own pathway capacity, its own fire-stopping at every penetration, and its own termination at both ends.

Installing this infrastructure in an occupied building means working in live clinical areas. Wall penetrations generate dust. Cable trays require fixings that create noise and vibration. Temporary disruption to existing services during rerouting is often unavoidable. Every penetration, ceiling opening, and cable installation activity may require Infection Prevention and Control (IPC) review, containment measures, and additional cleaning procedures. Clinical workstations, VoIP handsets, nurse call systems, medical devices, security systems, and Wi-Fi access points all depend on reliable network connectivity throughout the refurbishment programme

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At the centre of the installation, the floor distributor room itself requires active switching equipment, power infrastructure, cable management systems, and valuable floor space that may not exist in the existing building layout without structural intervention. Every one of these activities carries an infection control implication, a patient experience implication, and a programme risk that compounds as the scale of the building increases.

A smaller footprint changes what is possible

LAN Fibre To The Office (FTTO) architecture changes the geometry of the installation in ways that are directly relevant to working in occupied clinical environments.
The passive fibre cables in an FTTO installation are substantially thinner and lighter than copper cable bundles carrying the equivalent number of connections. Cabling volume can be reduced by up to 70% compared to traditional copper installations.
 

Smaller cables mean smaller pathway requirements, smaller penetrations through walls and floors, and a dramatically reduced physical footprint in the corridors and ceiling voids through which the infrastructure must pass. In a hospital where those spaces are shared with medical gas lines, electrical services, and mechanical plant - and where every penetration must be fire-stopped to clinical building standards - this reduction is not marginal. It changes what can be achieved without structural alteration.

The number of floor distributor rooms can be significantly reduced and, in some projects, eliminated entirely. Rather than distributing large access switches across multiple floor distributor rooms, the FTTO model centralises the core switching infrastructure and extends connectivity through compact FTTO switches located close to the point of use. These FTTO switches can be installed within cable ducts, service zones, floor boxes, or other suitable locations close to end devices. They require no dedicated telecommunications room and no local climate control, significantly reducing the infrastructure footprint required on each floor. The most disruptive installation activities can therefore be concentrated in a controlled central location rather than repeated throughout every clinical area.

Phased delivery without network interruption

Operational hospital refurbishments are almost always delivered in phases. A ward, department, or wing is vacated, refurbished, and brought back into service before the next section is addressed. The network infrastructure must support this model. It cannot require the entire building to be offline while the upgrade takes place, and it must be capable of delivering connectivity to refurbished areas while the remainder of the hospital continues to operate on existing infrastructure.

An FTTO architecture is particularly well suited to such a phased delivery. This is because the core switching infrastructure is installed centrally, and individual floors, departments, or wings can be connected progressively as the refurbishment programme advances. Each phase adds passive fibre runs and FTTO switches to the existing network architecture without requiring major changes to the central infrastructure. The rest of the building's network continues to operate uninterrupted.
 

Modern FTTO platforms such as LANactive further support efficient deployment through zero-touch provisioning. FTTO switches automatically connect to the management platform on first power-up and receive their configuration without manual programming at the device. In a clinical environment where access windows are restricted and every additional site visit carries operational and infection control implications, reducing the amount of configuration work required in patient areas is a meaningful advantage.

When individual FTTO switches require replacement - whether during the refurbishment programme or years later in operation - the memory card configuration system enables rapid recovery without specialist expertise. The configuration is transferred to the replacement device, allowing services to be restored quickly and consistently.
In healthcare environments where network availability supports critical clinical operations, reducing recovery time matters.

The specification window

The benefits of an FTTO hospital retrofit are only fully realised if the decision is made at the right point in the design process. By the time detailed construction drawings are finalised, pathway routing is fixed, room layouts are established, and the opportunity to design out unnecessary floor distributor rooms may already have been lost.
 

The opportunity to realise the full operational benefits of FTTO is largely determined during RIBA Stage 2 and Stage 3 design development, when the design remains flexible enough to accommodate a different approach to the horizontal network infrastructure. This means the conversation between the estates team, project team, ICT consultants, and network infrastructure specialists needs to happen earlier than is typical. The questions that determine whether an FTTO approach is viable - pathway routing, core room location, phasing sequence, resilience requirements, and existing infrastructure reuse - are design questions rather than procurement questions. They are answered on drawings, not in tender responses.

Bringing FTTO expertise into the project at the right stage is one of the most important factors in ensuring that a healthcare LAN upgrade delivers its intended clinical, operational, and programme benefits.

Infrastructure that works around the hospital - not the other way around

The traditional assumption in hospital refurbishment projects is that network infrastructure is a constraint: something that requires disruption, downtime, and careful coordination around clinical operations. FTTO architecture challenges that assumption.

With the right design approach, the right specification, and the right installation methodology, network infrastructure can be upgraded in occupied clinical environments with a level of disruption that is genuinely manageable. At the same time, healthcare organisations gain a network platform capable of supporting digital healthcare services for decades to come. For healthcare organisations balancing ageing estates, digital transformation programmes, and uninterrupted patient care, that combination is becoming increasingly important. Aginode supports healthcare estates teams, ICT consultants, and design partners through the specification and deployment of LANactive FTTO solutions in both new-build and occupied hospital refurbishment programmes across Europe.

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