Multi-Floor Enterprise Full Optical Network Interconnection Solution.AINOPOL Breaks 100-Meter Transmission Limit by Replacing Network Cables with Optical Fibers

In modern office buildings, hospitals, hotels, industrial parks and manufacturing plants, networks have become essential infrastructure for daily business operations. However, traditional copper cabling faces an unavoidable physical bottleneck in multi-floor networking scenarios: the effective transmission distance of common network cables is only around 100 meters. Beyond this range, network speed drops sharply, packet loss surges, and even link failures occur. To extend network coverage, enterprises have to set up weak current rooms and deploy switches on every floor or every few floors, resulting in massive stacked network devices.

Such copper-centered multi-floor network architecture leads to bloated network structure, as well as high costs in cabling, equipment procurement, power consumption and daily maintenance. Shenzhen AINOPOL Information Technology Co., Ltd. adheres to the philosophy of making converged communication smarter and simpler, and launches the opto-electronic converged full optical network interconnection solution. By replacing copper cables with optical fibers and substituting active switches with passive optical splitters, this solution helps enterprises break the 100-meter distance limit and build unified multi-floor networks featuring long-distance transmission, high bandwidth and low overall costs.

I. The 100-Meter Bottleneck of Traditional Multi-Floor Copper Networks

Standard twisted-pair cables can maintain stable Gigabit transmission within 100 meters. Once exceeding this distance, line resistance, crosstalk and signal attenuation increase rapidly. Actual tests show that network links may automatically downgrade from Gigabit to Fast Ethernet within 110 to 120 meters; the packet loss rate can exceed 5% at 150 meters, causing obvious stuttering in video conferences and high-definition voice calls; network links cannot even be established beyond 200 meters. To solve this problem, additional switches have to be deployed for signal relay, bringing more potential fault points and management nodes.

This further leads to continuously rising costs of weak current rooms. A typical 10-story office building requires weak current rooms on each floor or every other floor. Each room needs server cabinets, access switches, UPS power supplies, air conditioners, fire protection and power distribution equipment. The initial procurement and decoration cost of each room reaches tens of thousands of yuan, plus annual expenses on electricity, equipment maintenance and fault troubleshooting. More floors mean more weak current rooms and steadily increasing total investment.

Cross-floor cabling involves repeated hole drilling, bridge frame installation and cable laying, featuring long construction cycles and high labor costs. Besides, copper cables are highly susceptible to electromagnetic interference, resulting in signal degradation and rising error rates near elevator shafts, high-voltage pipelines and factory motors. When network faults occur on any floor, maintenance staff need to inspect terminals, cables, access switches, uplink links and core switches one by one, which may take several hours to locate specific failures.

II. How Optical Fibers Eliminate Distance Restrictions

Optical fibers support transmission distances up to several kilometers with negligible signal attenuation inside buildings. A single optical fiber running from the central equipment room can directly reach top floors, remote workshops and branch buildings without any relay switches. Adopting PON (Passive Optical Network) architecture, the full optical network distributes optical signals to multiple optical APs and ONU terminals via passive optical distribution networks (ODN). Optical splitters are power-free, fan-less and configuration-free devices with extremely low failure rates.

This solution simplifies traditional 3 to 4-layer network structures into a streamlined two-layer framework: OLT + ODN + Optical AP/ONU. It greatly cuts down device quantity and makes network topology clearer and easier to manage. Free from electromagnetic interference, optical fibers maintain stable data transmission even in high-interference environments such as elevator shafts, equipment rooms and production workshops, with a service life of more than 25 years.

III. AINOPOL Multi-Floor Full Optical Network Solution

Built on opto-electronic converged communication architecture, the complete solution consists of EAAS cloud management platform, multi-service integrated gateways, MA8500X8 series OLT devices, passive ODN networks, optical AP/ONU terminals and SD-WAN modules. The OLT is deployed in the central equipment room as the core of the entire optical network; ODN extends optical fiber lines to all floors through passive splitters; optical APs and ONUs are installed at floor terminals to provide wired network access and wireless Wi-Fi coverage for end users.

The MA8500X8 OLT supports 10G PON and SDN intelligent management, and realizes coverage of up to 64 optical terminals per port via 1:64 optical splitting ratio. Taking a 10-story office building as an example, deploying 6 to 8 optical terminals on each floor (60 to 80 terminals in total) only requires 1 to 2 PON ports. For larger-scale buildings, enterprises only need to add more PON ports and splitters instead of purchasing extra core or aggregation switches. When adding new floors and terminals in the future, users merely expand ODN splitters and end devices without replacing core equipment, fully protecting previous investment.

Floor-mounted optical AP/ONU terminals are equipped with Wi-Fi 6 technology, delivering a maximum air interface speed of 3000Mbps and supporting intelligent seamless roaming. In multi-floor office scenarios, network handover between different floors and meeting rooms can be completed within 50 milliseconds without user perception. A single AP supports up to 60 concurrent terminal connections to meet high-density office access demands. VLAN technology realizes isolated transmission of office data, voice calls, video streams, monitoring signals and access control data; built-in PON physical optical link encryption ensures end-to-end data security at the fiber transmission layer.

IV. Standard Renovation Procedures & Typical Application Scenarios

The whole network upgrading process includes four major steps:

On-site survey: Confirm floor quantity, terminal scale, service types and weak current well locations, and design OLT deployment positions, fiber routes and terminal installation points.

Central core deployment: Install OLT devices in the main equipment room and connect them to the EAAS cloud platform, pre-configuring network templates, Wi-Fi SSIDs, VLAN rules and security policies.

ODN layout: Lay optical fiber lines and install passive splitters inside floor weak current wells and wiring nodes.

Terminal deployment: Install optical APs and ONUs on each floor, complete automatic device activation via QR code scanning, and finish network migration and stability tests.

Widely applicable scenarios include multi-storey office buildings, hospitals, hotels, manufacturing industrial parks and campuses. The unified full optical network architecture can flexibly carry office systems, ward calling systems, guest room networks, production monitoring and campus wireless services.

V. SD-WAN Cross-Regional Networking: Centralized Management for All Branches

For enterprises with multiple office buildings, industrial parks and remote branches, the AINOPOL solution supports cross-regional interconnection via SD-WAN technology. Core OLT devices and egress gateways of all branches connect to the headquarters through SD-WAN links to build an exclusive virtual private network. Remote staff can stably access headquarters ERP, CRM, OA systems and file servers; IoT data including video surveillance, access control alarms and environmental sensor information can be centrally stored, analyzed and displayed at the headquarters. Cooperated with the EAAS cloud operation platform, IT administrators can monitor full-network device status, traffic trends and system alarms on one single management interface, realizing visualized and controllable network operation covering all branches.

Enterprise multi-floor network construction is stepping into the full optical era from traditional copper cable era. Restricted by the 100-meter transmission limit of ordinary network cables, enterprises used to adopt complicated network layouts with numerous weak current rooms and layered switches. By replacing copper cables with optical fibers and active relays with passive splitters, AINOPOL builds simplified two-layer network architecture composed of OLT, ODN and optical terminals, helping enterprises break distance limitations, streamline network structures, cut operation costs and enhance comprehensive service bearing capacity.

FAQ

Q: Does optical fiber cabling cost more than copper cabling?

A: Although raw optical fiber materials are slightly more expensive, the PON passive architecture eliminates the need for floor weak current rooms, switches and UPS equipment, reducing the overall construction and cabling cost by around 50%. With a service life over 25 years, optical fiber brings better long-term return on investment.

Q: Can existing copper networks be upgraded to full optical networks smoothly?

A: Yes. The solution supports phased renovation. Enterprises can deploy core OLT devices first, and gradually switch floor network access from copper cables to optical fibers. Old and new networks can run simultaneously to minimize impacts on daily business.

Q: What does 1:64 PON splitting ratio mean? Will it limit network bandwidth?

A: 1:64 means one single OLT port can connect up to 64 optical terminals via passive splitters. The total bandwidth of a 10G PON port reaches 10Gbps and is dynamically allocated among connected terminals, which is sufficient for daily office usage. Equipped with SDN intelligent scheduling and dedicated bandwidth guarantee functions, the OLT can prioritize traffic transmission for core business services.

Q: Is it difficult to renovate networks in old buildings?

A: Optical fibers are much slimmer than copper cable bundles and feature flexible routing, which can be laid through existing cable bridges and pipeline holes. Functions such as QR code activation and remote configuration simplify on-site construction and debugging work, greatly shortening the whole renovation cycle compared with traditional copper network reconstruction.