The “floor equipment room” item disappears from the renovation quotation: What does all-optical networking actually save

Peer engineers working on weak current renovations often notice a striking gap between two quotations for the same building. General Manager Zhang from a client recently ran into this situation. The old quotation listed “floor equipment room: computer room finishing, air conditioning, UPS, cabinets” for every floor, while this line is completely removed in the new proposal. He asked: “What exactly are we cutting out?” The answer lies not in a single device, but in the networking hierarchy and power supply logic.

1. Traditional three-layer networking: A “mini computer room” required on every floor

Campus networks used to adopt a three-layer architecture: core, aggregation and access. The core node sits in the central computer room, aggregation switches are deployed in equipment rooms on each building or every few floors, and access switches extend downwards from the aggregation layer.

The pain point comes from the aggregation layer. Each aggregation node requires independent power supply, air conditioning, cabinets and dedicated heat dissipation space. As a result, every floor or group of floors needs a dedicated equipment room built to mini computer room standards. The taller the building and the more buildings there are, the more these mini computer rooms are replicated. Construction costs, air conditioning power bills and subsequent maintenance expenses multiply accordingly. There is also a hidden overhead in operation and maintenance. Every equipment room needs regular inspection, spare parts and dust removal. As the quantity rises, labour costs grow linearly. The burden is easy to overlook day-to-day, but becomes obvious when calculating the total cost.

This is especially true for ageing campuses. Existing weak current rooms are often occupied by external air conditioning units or storage, making renovation extremely difficult. Eliminating the requirement for dedicated floor equipment rooms directly bypasses this headache.

2. All-optical two-layer flat architecture: Passivise the aggregation layer

AINOPOL all-optical networking takes a different approach. Its two-layer flat architecture (OLT + ONU, with passive splitters replacing the aggregation layer) removes powered aggregation nodes entirely. The OLT is deployed in the central computer room, ONUs are deployed down to floors and rooms, and passive splitters handle optical signal splitting in between.

Passive components consume no power, generate no heat and require no air-conditioned computer room. This eliminates the need for dedicated weak current rooms on each floor — this is exactly the line removed from the quotation. This is not an oversight by the vendor; the architecture simply no longer requires such infrastructure. Importantly, removing dedicated weak current rooms does not compromise reliability. Passive splitters carry no single point of failure risk. Critical nodes are consolidated and centrally protected in the central computer room, making operation and maintenance more focused and easier to secure.

This design also accelerates construction timelines. Traditional deployments cannot install network devices until the equipment room air conditioning, UPS and cabinets are fully ready, tying the network schedule to civil works. With the all-optical solution, ONUs can be deployed separately, so finishing work and network construction can proceed in parallel, giving better control over the opening timeline.

3. Three major savings: computer room space, energy consumption and cabling

Removing floor equipment rooms delivers three tangible benefits:

• Space: All-optical networking typically cuts dedicated computer room space requirements by over 70%, freeing floor area for alternative use.
• Energy consumption: Passive nodes draw no power and fewer active devices are deployed, reducing energy use by roughly 70%. This delivers lasting savings on air conditioning and electricity bills year after year.
• Cabling: When paired with POF optical-electrical composite cables, power and signal lines can run in the same trunking. Cabling workload is greatly reduced and construction is faster. Support for over 800-metre transmission without repeaters also cuts the need for intermediate active equipment.

These savings apply once at the construction stage and recur annually during operation. This is where the TCO tipping point emerges. Combined, the saved floor space and power costs for a building often offset the price premium of the all-optical upgrade within a few years.

4. Smooth upgrade path: Savings today do not limit future expansion

Some worry that flattening the architecture means sacrificing functionality for lower cost. On the contrary, all-optical networking offers ample room for evolution. It supports smooth upgrades to 50G/200G PON. When business traffic grows, operators can expand bandwidth without tearing down and rebuilding the whole network. A single deployment can remain viable for decades.

For high reliability, Type B/C dual-homing protection supports sub-50ms failover upon link failure. Core devices adopt dual power supplies and dual main control hot standby to eliminate single points of failure. Common deployments include dual OLTs (such as MA8500X), dual core switches (such as CS8500E) and dual firewall clusters for further redundancy. In short, the design removes unnecessary computer rooms and power draw, while retaining all required redundancy and stability.

The solution also fully meets compliance requirements under Ministry of Public Security Order No.82 and Order No.176. It supports internet real-name authentication, local storage of internet access logs for 180 days, tamper-proof logs and traceable audit. Additional capabilities include boundary protection, security zone isolation and abnormal traffic control. Again, we cut redundant rooms and power, not reliability, redundancy or compliance.

Many clients struggle to compare quotations because they cannot tell the difference between cutting waste and cutting capability. Built on all-optical infrastructure, powered by audio & video engine, and protected by robust security capabilities, AINOPOL delivers an integrated “connectivity & security” solution. All-optical flat renovation is not simple downgrading for cost reduction. It relies on architectural reconstruction to allocate budget to core bandwidth, reliable redundancy and compliant foundations. Fewer dedicated computer rooms, lower energy use and simpler O&M, while upholding security, stability and long-term upgradability — this is the truly cost-effective choice for weak current renovation.

FAQ

Q: If an aggregation computer room already exists in an old building, does it need to be demolished?
A: Demolition is not mandatory. It can be retained for transition or backup. The new architecture uses passive splitters for downlink access, allowing gradual convergence and smooth migration according to site conditions.

Q: What happens if a passive node fails?
A: The all-optical architecture supports Type B/C dual-homing protection with 50ms-level failover. Combined with dual OLT, dual core and dual firewall clusters, single points of failure are eliminated.

Q: Where are floor access devices placed after removing dedicated weak current rooms?
A: ONUs are deployed on floors and inside rooms. They are much smaller and consume far less power than traditional access switches. They are usually installed in corridor weak current boxes or distribution points, with no need for independent air-conditioned computer rooms. Final placement depends on site design.