1. Problem Statement: The Physical Layer Gap in Disaster Recovery

1.1 The Business Reality of Downtime

Unplanned IT downtime costs the Global 2000 companies $400 billion annually — approximately $200 million per company per year, equivalent to 9% of profits (Splunk / Oxford Economics, "The Hidden Costs of Downtime," June 2024, n=2,000 Global 2000 executives). At the per-event level, Gartner benchmarks the average cost at $5,600 per minute ($336,000/hour), with ITIC's 2024 survey finding that 81% of enterprises report costs exceeding $300,000 per hour. In banking, finance, and healthcare, average costs exceed $5 million per hour for critical system outages.

Despite this financial exposure, most enterprise DR programmes leave the physical optical layer — the dark fiber runs, splice panels, ODF patch panels, and inter-site connections — managed entirely manually. A single fiber cut or connector failure on this layer will defeat every routing, compute, and database failover mechanism deployed above it.

1.2 The Multi-Site Interconnect Problem

Modern DR architectures rely on inter-site dark fiber for synchronous replication, active/active workload distribution, and out-of-band management. These fiber paths are typically terminated in traditional ODF patch panels — mated connectors that degrade over time through contamination, inserting gradually increasing optical loss that goes undetected until a link fails during a temperature spike or physical disturbance.

When a physical-layer fault occurs, the recovery sequence is:

• NOC detects the fault (1–60 minutes via protocol alerts)
• On-call engineer is dispatched or remotely directed to a secure data hall (30–120 minutes)
• Physical re-patching under time pressure in a restricted environment (30–240 minutes)
• Higher-layer services restart and reconverge (5–60 minutes)

Total physical-layer RTO: 60–300+ minutes — versus a contractual SLA measured in minutes or seconds.

1.3 Why L3 Failover Alone Is Insufficient

BGP detects failure when a TCP keepalive times out — typically 30–180 seconds after the physical cut. During that window, all traffic is black-holed. MPLS Fast Reroute operates in <50 ms but requires pre-computed alternate paths in the MPLS control plane, cannot pre-provision at the physical layer, and cannot detect gradual optical degradation. Neither mechanism provides proactive optical power monitoring: a connector degrading over weeks triggers no IP-layer alert until the link actually fails.

The POLATIS® OCS addresses all three gaps: it switches in <50 ms at the physical layer (before any BGP or TCP timer expires), detects degradation continuously via per-port OPM, and pre-provisions protection paths in hardware — independent of any routing protocol.

2. Optical Circuit Switching Technology

2.1 OOO vs. OEO Switching

Traditional data center switching uses Optical-to-Electrical-to-Optical (OEO) conversion: the signal is converted to electrical, switched, and converted back. OEO switches are protocol-specific and data-rate-dependent. All-Optical (OOO) switching maintains the signal as light from input to output with no electrical conversion. Key advantages for DR:

• Protocol and data-rate agnostic — same switch handles 1G through 800G without modification. IEEE 802.3 has progressed through four major speed generations (802.3ae 10G 2002, 802.3ba 100G 2010, 802.3bs 400G 2017, 802.3ck 800G 2022) — the OCS requires no change at any transition.
• Near-zero signal latency — critical for synchronous replication and active/active topologies
• Dark fiber pre-provisioning — protection paths fully configured before any traffic flows
• Optional Optical Power Monitoring (OPM) — per-port power measurement enabling proactive fault detection before link failure
• OEO insertion loss: 4–6 dB per conversion pair vs. 0.5–1.5 dB for the POLATIS® OCS across the full 384×384 matrix

2.2 POLATIS® DirectLight™ Architecture

The POLATIS® Series 7000 OCS uses DirectLight™ beam-steering technology — a solid-state mechanism with no mechanical micro-mirrors in the optical path. This contrasts with MEMS-based alternatives where micro-mirror alignment determines coupling efficiency and degrades over time.

DirectLight™ has no moving parts in the optical path and operates correctly at any orientation and in vibrating environments — a critical differentiator from MEMS alternatives which are sensitive to HVAC vibration and mechanical shock. There is no mechanical cycle limit: DR test frequency has zero impact on OCS product lifetime.

3. The HUBER+SUHNER Physical Layer Ecosystem

The POLATIS® OCS is the switching engine, but it operates within a complete physical layer ecosystem. Three complementary HUBER+SUHNER product lines — LISA™, IANOS™, and CDR — are essential to delivering the density, manageability, and reliability that DR deployments require. The CDR is the physical ODF rack cabinet that houses the LISA™ splice cassettes. IANOS™ is a separate Top-of-Rack chassis independent from the CDR. Together they form the fiber termination and breakout layer for each DR site.

3.1 LISA™ — Ribbon Splice Cassette System (inside CDR Cabinet)

LISA™ is HUBER+SUHNER's ribbon splice cassette system, housed inside the CDR ODF cabinet. The LISA™ ribbon cassette is the high-density evolution of the standard splice cassette, designed for mass-fusion ribbon fiber termination in hyperscale data centre and carrier DR environments. Each cassette occupies ½RU and provides a range of front-plate connector configurations, all factory-spliced at installation with no mated connectors on the incoming dark fiber side.

LISA™ ribbon cassette front-plate configurations (source: HUBER+SUHNER LISA™ Cassettes product page):

• 12× LCd UPC or APC — standard duplex LC for single-mode inter-site links
• 18× LCd UPC or APC — higher-density LC when space is critical
• 6× or 12× MTP Base-8 or Base-12 — MTP outputs for trunk cable runs to IANOS™
• 18× MTP Base-8 — maximum MTP density per ½RU
• 36× SN UPC — very small form factor duplex connector
• 36× MDC UPC — push-pull multi-fiber connector for ultra-high density
• Splice through — direct fiber passthrough for point-to-point splice continuity

In a POLATIS® DR deployment, the 12× MTP Base-12 configuration is standard for dark fiber DR links: each cassette ribbon-splices the incoming dark fiber and presents 12 MTP connectors. These MTP outputs connect via MTP trunk cables to the IANOS™ ToR chassis.

Performance characteristics: Splice loss <0.1 dB per fusion splice (vs. 0.3–0.5 dB for mated LC or MTP connector pairs). ½RU form factor. OS2 single-mode compatible at 1310 nm and 1550 nm. No mated connectors on the dark fiber entry side — eliminates the connector contamination and degradation that causes gradual optical power loss.

3.2 IANOS™ — Ribbon Splice Module and Top-of-Rack Chassis

IANOS™ is HUBER+SUHNER's Top-of-Rack fiber management chassis — a separate 19″ enclosure independent from the CDR cabinet. IANOS™ sits between the CDR cabinet and the POLATIS® OCS, receiving MTP trunk cables from the LISA™ cassettes and breaking them out to individual LC or other connector formats.

Standard IANOS™ front-plate configurations: 12× LCd UPC, 12× LCd APC, 6× MTP Base-12, 36× SN UPC, 36× MDC UPC.

IANOS™ ribbon splice modules (source: HUBER+SUHNER IANOS™ Module Types, pp. 62–63):

• 24F/module, 12× LCD, NS+TIA (IKD-12-LCUD / IKD-12-LCAD series): 24F per module, 144F per 1U, 576F per 4U
• 72F/module, 36× VSFF, NS+TIA (IKD-12-SNU6 / IKD-12-MDU6 series): 72F per module, 432F per 1U, 1728F per 4U — 3× denser than the 24-fiber module
• 72F/module, 6× MTP Base-12 (IKD-06-12CM series): 72F per module via 6× MTP-12 connectors

Maximum fiber capacity in a 19″ rack (from HUBER+SUHNER splicing table): 24-fiber modules: 144F/1U, 576F/4U, maximum 5,760F per 40U cabinet. 72-fiber modules: 432F/1U, 1728F/4U, maximum 17,280F per 40U cabinet.

For POLATIS® DR deployments with dark fiber inter-site links, the 24-fiber ribbon splice module (12× LCD output, IKD-12-LCUD/LCAD) is the standard configuration. MTP trunks from LISA™ (CDR) feed the IANOS™ ribbon splice input; the 12 LCD connectors on the module front face patch via LC duplex cords to the POLATIS® OCS LC ports. The OCS is configured in LC port mode throughout for DR deployments.

3.3 CDR — Optical Distribution Frame Cabinet (ODF Rack)

CDR is HUBER+SUHNER's Optical Distribution Frame (ODF) rack cabinet — a 47U, 300 mm deep, front-accessible enclosure that physically houses the LISA™ splice cassettes. IANOS™ is a separate Top-of-Rack chassis independent of the CDR. CDR 1500 specifications: 2236 mm H × 328 mm W, 201 kg, C-shaped aluminium frame, full front access with no rear-access requirement. Mount options: back-to-wall, back-to-back, end-of-row, side-by-side.

In a DR deployment, the CDR rack serves as the central termination point — the structured demarcation between the incoming inter-site dark fiber plant and the outgoing MTP trunk connections to IANOS™.

4. Key Insight: Closing the Layer 1 Automation Gap

The POLATIS® OCS with RESTCONF, deployed with LISA™ splice cassettes and IANOS™ ribbon splice modules, is the only physical-layer component that closes all three gaps in the DR automation chain simultaneously:

5. Physical Layer Constraints in DR Deployments

5.1 Fiber Loss Budget

The POLATIS® OCS contributes only 0.5–1.5 dB across the full 384×384 matrix — significantly lower than MEMS-based alternatives (typically 2–3 dB) and OEO conversion pairs (4–6 dB). The total intra-site loss budget through the full HUBER+SUHNER stack:

5.2 Port Density: IANOS™ Chassis Sizing for DR Deployments

Each 1+1 APS-protected service requires 3 OCS ports: 1 working-path input, 1 protection-path input, and 1 output to equipment. The OCS switches between the two input paths to reach the single equipment output. A 96×96 OCS therefore supports 32 independently protected services (96 ÷ 3) at full utilisation.

A typical initial deployment protecting 12 standard service types (see Section 9.2) consumes 36 ports — leaving 60 ports (20 additional services) available for growth without hardware change. The 96×96 is not over-designed: TIA-942-C recommends sizing for 3–5 years of growth, and idle OCS ports cost nothing to operate (the switch is all-optical with fixed power draw).

5.3 Physical Space Requirements: ANSI/TIA-942-C and ANSI/TIA-568-C

The placement of CDR, LISA™, and IANOS™ equipment within a building is governed by ANSI/TIA-942-C ("Telecommunications Infrastructure Standard for Data Centers," May 2024) and ANSI/TIA-568-C. ANSI/TIA-942-C defines five functional spaces:

The TIA-568-C analogy: Entrance Facility (EF) ≈ TIA-942 ER; Equipment Room (ER) ≈ TIA-942 MDA; Telecommunications Room (TR) ≈ TIA-942 HDA; Work Area ≈ TIA-942 EDA.

5.4 CDR / LISA™ and IANOS™ Physical Space Placement

6. Disaster Recovery Deployment Models

In all models below, inter-site dark fiber is splice-terminated in LISA™ cassettes inside CDR ODF cabinets; MTP trunks carry the signal to IANOS™ ToR chassis; LC patch cords connect to the POLATIS® OCS. All controlled via RESTCONF.

6.1 Model A: Hot Standby (1+1 APS)

A splitter creates simultaneous working and protection copies of each signal. Both diverse fiber paths are splice-terminated in LISA™ cassettes inside the CDR cabinet, carried via MTP trunks to the IANOS™ ToR chassis, and patched via LC to the secondary POLATIS® OCS. The OCS monitors OPM on the working port and auto-switches to protection within 50 ms on power alarm. BGP sessions are preserved — the IP layer never sees the fault.

6.2 Model B: Warm Standby (1:N Shared Protection)

A single protection path serves N working paths. Dark fiber is splice-terminated in LISA™ cassettes inside the CDR cabinet, delivered via MTP trunks to the IANOS™ ToR chassis, and connected via LC to the OCS at each end. The POLATIS® OCS switches any working-path ingress to the shared protection egress on fault detection. More fiber-efficient than 1+1 but with slightly longer switchover time when the protection path must be reconfigured.

6.3 Model C: Cold Standby (Dark Fiber Pre-Provisioning)

Protection cross-connects are pre-configured on the OCS via RESTCONF at deployment. Dark fiber protection paths are already splice-terminated in LISA™ cassettes (CDR cabinet), MTP-trunked to the IANOS™ ToR chassis, and LC-connected to the OCS. Activation is a single RESTCONF PATCH call — sub-second from software perspective. Used when dark fiber availability is limited and cost-per-fiber justifies pre-provisioning over dual-path simultaneous carry.

6.4 Model D: Multi-Site Hierarchical

A hub OCS at the primary site (typically 192×192 or 384×384) serves multiple secondary sites, each with its own smaller OCS (32×32 or 64×64). Each node has its complete CDR + LISA™ → MTP trunk → IANOS™ ToR → OCS assembly. The hub OCS manages cross-site path selection via RESTCONF; edge OCS units handle local protection switching independently. Provides a third path option for dual-path failure scenarios. Source: POLATIS® multi-site deployment guide.

7. Reference Architecture: Dual-Site 1+1 Hot Standby

The following architecture implements Model A (hot standby 1+1 APS) with the full HUBER+SUHNER physical layer ecosystem. Each component is placed by its role in the fiber signal path.

Signal path: Carrier dark fiber (SC/LC handoff) → CDR entry → LISA™ ribbon splice (½RU, MTP out) → MTP trunk cables → IANOS™ ToR (MTP→LC cassette) → LC patch cords → POLATIS® OCS (LC config) → cross-connect → Equipment rack.

8. Programmatic Control via POLATIS® RESTCONF API

This section provides C# (.NET) code patterns for the four operations most critical to DR automation. All examples use the POLATIS® RESTCONF interface documented in HUBER+SUHNER document 7001-006-07 (RFC 8040, port 8008, root /api).

8.1 Base HTTP Client Setup

The following C# class encapsulates all RESTCONF communication. In production, retrieve credentials from Azure Key Vault or HashiCorp Vault.

using System.Net.Http.Headers;
using System.Text;
using System.Text.Json;

public class PolatisRestconfClient : IDisposable
{
    private readonly HttpClient _http;
    private readonly string _baseUrl;

    public PolatisRestconfClient(string host,
                                  string user = "admin",
                                  string password = "root",
                                  int port = 8008)
    {
        _baseUrl = $"http://{host}:{port}/api";
        var handler = new HttpClientHandler
        {
            ServerCertificateCustomValidationCallback = (_, _, _, _) => true
        };
        _http = new HttpClient(handler);
        var credentials = Convert.ToBase64String(
            Encoding.ASCII.GetBytes($"{user}:{password}"));
        _http.DefaultRequestHeaders.Authorization =
            new AuthenticationHeaderValue("Basic", credentials);
        _http.DefaultRequestHeaders.Accept.Add(
            new MediaTypeWithQualityHeaderValue("application/yang-data+json"));
    }

    public async Task<string> GetAsync(string resource)
    {
        var r = await _http.GetAsync($"{_baseUrl}/data/{resource}");
        r.EnsureSuccessStatusCode();
        return await r.Content.ReadAsStringAsync();
    }

    public async Task<HttpResponseMessage> PatchAsync(
        string resource, string json)
    {
        var content = new StringContent(json, Encoding.UTF8,
            "application/yang-data+json");
        return await _http.PatchAsync($"{_baseUrl}/data/{resource}", content);
    }

    public void Dispose() => _http.Dispose();
}

8.2 Reading Optical Power Telemetry (OPM)

Poll GET /api/data/optical-switch:opm-power/port={N} every 5 seconds. Returns power in dBm and alarm status from the YANG model.

public record OpticalPower(int PortId, double PowerDbm, string AlarmStatus);

public async Task<OpticalPower?> GetPortPowerAsync(
    PolatisRestconfClient client, int portId)
{
    try
    {
        var json = await client.GetAsync(
            $"optical-switch:opm-power/port={portId}");
        using var doc = JsonDocument.Parse(json);
        var port = doc.RootElement.GetProperty("optical-switch:port");
        return new OpticalPower(
            PortId:      port.GetProperty("port-id").GetInt32(),
            PowerDbm:    port.GetProperty("opm")
                            .GetProperty("power").GetDouble(),
            AlarmStatus: port.GetProperty("opm")
                            .GetProperty("power-alarm-status")
                            .GetString() ?? "UNKNOWN");
    }
    catch (HttpRequestException) { return null; }
}

8.3 Activating a Protection Path

On OPM alarm, issue a single PATCH to activate the pre-provisioned protection path. HTTP 204 No Content confirms the cross-connect is active in hardware.

public async Task<bool> ActivateProtectionPathAsync(
    PolatisRestconfClient client, int ingressPort, int protectionEgress)
{
    string payload = $@"{{
      ""pair"": {{ ""egress"": {protectionEgress} }}
    }}";
    var response = await client.PatchAsync(
        $"optical-switch:cross-connects/pair={ingressPort}", payload);
    bool ok = response.StatusCode ==
              System.Net.HttpStatusCode.NoContent;
    Console.WriteLine(ok
        ? $"[{DateTime.UtcNow:o}] Failover: port {ingressPort} -> {protectionEgress}"
        : $"Failover FAILED: HTTP {(int)response.StatusCode}");
    return ok;
}

8.4 Complete DR Monitor (.NET BackgroundService)

The complete monitoring loop runs as a hosted .NET BackgroundService, polling OPM every 5 seconds across all monitored ports and activating protection paths automatically on alarm.

using Microsoft.Extensions.Hosting;

public class DrMonitorService : BackgroundService
{
    // working ingress port -> protection egress port
    private readonly Dictionary<int, int> _protectionMap = new()
    {
        { 1, 193 },  // Primary inter-site working -> protection
        { 2, 194 },  // Secondary service
        { 3, 195 },  // Tertiary service
    };

    private const double ThresholdDbm   = -30.0;
    private const int   PollIntervalMs  =  5_000;

    private readonly PolatisRestconfClient _secondaryOcs =
        new("10.10.2.10");

    protected override async Task ExecuteAsync(
        CancellationToken stoppingToken)
    {
        while (!stoppingToken.IsCancellationRequested)
        {
            foreach (var (workingPort, protectionPort) in _protectionMap)
            {
                var power = await GetPortPowerAsync(
                    _secondaryOcs, workingPort);
                if (power is null) continue;

                if (power.PowerDbm < ThresholdDbm ||
                    power.AlarmStatus.Contains("ALARM"))
                {
                    await ActivateProtectionPathAsync(
                        _secondaryOcs, workingPort, protectionPort);
                }
            }
            await Task.Delay(PollIntervalMs, stoppingToken);
        }
    }

    public override void Dispose()
    {
        _secondaryOcs.Dispose();
        base.Dispose();
    }
}

8.5 Pre-Provisioning Dark Fiber Protection Paths at Startup

Write all protection cross-connects to the OCS at service startup with a single bulk PATCH. The OCS holds this state independently — hardware APS continues even if the orchestrator goes offline.

public async Task PreProvisionProtectionPathsAsync(
    PolatisRestconfClient client, Dictionary<int,int> map)
{
    var pairs = map.Select(kv =>
        $@"{{""ingress"":{kv.Key},""egress"":{kv.Value}}}");
    string payload = $@"{{
      ""cross-connects"":{{""pair"":[{string.Join(",",pairs)}]}}
    }}";
    var r = await client.PatchAsync(
        "optical-switch:cross-connects", payload);
    Console.WriteLine(
        r.StatusCode == System.Net.HttpStatusCode.NoContent
            ? $"Pre-provisioned {map.Count} dark fiber paths."
            : $"Pre-provisioning failed: HTTP {(int)r.StatusCode}");
}

9. Business Value: RTO, RPO, and TCO

9.1 RTO Comparison

9.2 TCO and ROI Drivers

The following cost drivers are based on published third-party research and industry data. Each figure includes a source reference.

10. Return on Investment: Quantitative Framework

This section provides a structured ROI model based on published industry data. Parameters should be adjusted to match your organisation's risk profile, downtime cost, and DR test frequency.

10.1 Input Parameters

10.2 Annual Cost Avoidance Model

10.3 Multi-Year NPV Model

Using a 5-year analysis horizon with 8% discount rate and conservative $300K/hr downtime cost:

CAPEX estimate: ×2 96×96 POLATIS® OCS units, ×2 IANOS™ HD 4U chassis, ×4 CDR 1500 cabinets (2 per site), LISA™ splice cassettes, MTP trunk cabling, installation and commissioning. Operational expenditure is negligible: the OCS is all-optical with no electrical signal processing and MTBF exceeds 250,000 hours.

11. Failure Mode Analysis and Automated Handling

A complete DR fabric must handle the full spectrum of physical-layer failure modes. This section documents each failure category, the detection mechanism, the automated response, and the residual risk after OCS protection is active.

11.1 Failure Mode Matrix

11.2 Pre-Event vs. Reactive Response

Continuous OPM monitoring detects degradation before failure occurs. Recommended thresholds for a 96×96 deployment with typical inter-site spans of 20–80 km:

The −3 dB warning threshold is particularly valuable: in production deployments, proactive thresholds have detected connector contamination developing on multiple strands, enabling scheduled maintenance during planned windows rather than emergency call-outs — avoiding significant unplanned downtime costs.

11.3 Split-Brain and Consistency Guarantees

The POLATIS® architecture handles potential management network partitions through three mechanisms:

• Pre-provisioning at deploy time: All protection cross-connects are written to both OCS units at deployment via RESTCONF PATCH and verified with GET. Neither OCS requires the orchestrator to be reachable to maintain its cross-connect state — the switch fabric holds state independently.
• OCS-local APS: Hardware Automatic Protection Switching operates within the OCS itself, triggered by OPM alarm, without any orchestrator involvement. Even in a total management network partition, the OCS at the secondary site will switch to the protection path on detecting the working-path power alarm.
• Idempotent RESTCONF operations: PATCH operations on the POLATIS® RESTCONF API are idempotent. If the orchestrator sends the same PATCH twice due to a retry, the switch state is identical. The GET cross-connects resource allows the orchestrator to verify the current state before issuing a PATCH, preventing conflicting updates.

12. Competitive Landscape and Technology Positioning

The market for optical switching in data center and carrier DR environments includes several competing technologies. This section provides an objective technical comparison to assist in vendor evaluation and architecture decisions.

12.1 Technology Comparison: OCS vs. Alternatives

12.2 When OEO / IP-Layer Switching Alone Is Insufficient

IP-layer failover (BGP, VRRP, MPLS FRR) is complementary to, not a substitute for, Layer 1 protection. Three fundamental limitations:

• BGP detects failure when a session drops — which requires the TCP keepalive timeout (typically 30–180 seconds in non-tuned deployments) or the BGP hold timer to expire. By this point, the physical failure has already caused seconds to minutes of traffic loss.
• MPLS Fast Reroute operates in <50 ms but requires the MPLS control plane to have pre-computed alternate paths. It cannot pre-provision at the physical layer or detect gradual optical degradation.
• Neither mechanism provides proactive optical power monitoring. A connector degrading over weeks will not trigger any IP-layer alert until the link actually fails.

The POLATIS® OCS addresses all three gaps: it switches in <50 ms (at the physical layer, before any IP-layer protocol is affected), it detects degradation continuously via OPM, and it preserves IP-layer session state by restoring the physical path before TCP or BGP timers expire.

12.3 MEMS vs. DirectLight™: A Technical Comparison

13. HUBER+SUHNER Ecosystem: CDR Cabinet, LISA™, IANOS™, and POLATIS®

14. Why Act Now

• Regulatory pressure: DORA (EU, Jan 2025), NERC CIP-014, HIPAA, SOX, PCI-DSS all mandate documented, tested physical resilience. A manual fiber re-patch process with no automated compensating control is a DORA audit finding.
• AI/HPC workloads demand ultra-low RTO: GPU training runs interrupted mid-epoch require full restart; inference serving has direct revenue impact per second of outage. Physical automation is now infrastructure-level, not optional.
• Physical sabotage risk is growing: Deliberate fiber cuts targeting enterprise and telco networks reported across Europe and North America make sub-50 ms automated L1 recovery a security requirement, not just an availability feature.
• Early adoption builds operational muscle memory: Organisations that deploy and test today develop the runbooks and tooling that competitors will scramble to replicate after an incident.

15. Conclusion

The HUBER+SUHNER physical layer ecosystem — POLATIS® OCS for automated switching, LISA™ ribbon splice cassettes for dark fiber termination inside the CDR cabinet, IANOS™ ToR chassis for MTP-to-LC breakout, and CDR ODF rack for structured demarcation — provides the only complete answer to the physical-layer DR automation gap.

The business case is clear: at $9,000/minute average downtime cost, a single avoided 2-hour physical-layer failover event covers a substantial fraction of the deployment cost. The 5-year NPV exceeds $3.5M at conservative assumptions, with payback in Year 1. DORA compliance closes the case for EU-regulated organisations.

The technology case is equally clear: DirectLight™ beam-steering with no mechanical cycle limit, RESTCONF RFC 8040 with no proprietary SDK, and protocol-agnostic operation across all IEEE 802.3 generations eliminates the technology refresh risk inherent in OEO switching alternatives.

Next Steps

• Request a DR fiber architecture review from HUBER+SUHNER Polatis
• Access the POLATIS® RESTCONF API sandbox for .NET integration prototyping
• Engage HUBER+SUHNER for CDR cabinet + LISA™ + IANOS™ design and sizing services at your DR sites

References and Data Sources

All product specifications cited in this whitepaper are drawn from primary HUBER+SUHNER product documentation. Where industry data is cited, the original source is identified. Readers are encouraged to verify specifications against current product datasheets, as product lines are subject to update.

HUBER+SUHNER Product Documentation

Industry and Regulatory Sources

Appendix A: Glossary of Terms

Appendix B: Executive Brief — One-Page Summary