A Smarter Alternative to Leased Lines and SDWAN

Traditional leased lines offer predictable connectivity, but they are expensive, slow to deploy, and limited in scalability. Standard SDWAN and load-balancing solutions improve redundancy, but they do not provide true bandwidth aggregation or session continuity. comBOX Virtual Leased Line is designed to go further by combining multiple access links into a single high-performance WAN service with active-active resilience and optimization across a private backbone.

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Leased Lines vs SDWAN vs comBOX VLL

Commercial MPLS & Leased Lines

comBOX Virtual Leased Line

SDWAN Load Balancing

SDWAN Policy Based Routing

Core ArchitectureDedicated single-path WANOverlay bonded multi-path WANMulti-link distributionPolicy-driven path selection
Primary Value PropositionGuaranteed connectivityGuaranteed + optimized + aggregated connectivityBasic redundancyTraffic steering
Bandwidth UtilizationFixed (unused capacity wasted)Full utilization (all links active)Partial (per-session usage)Partial (policy-based)
Scalability (adding links)❌ Slow / costly✅ Instant (add any link type)✅✅
Link Types SupportedFiber / Microwave onlyAny: FTTH, 5G, LTE, Starlink, xDSLAnyAny
True Bandwidth Aggregation❌✅ (packet-level bonding)❌❌
Single Session Throughput Boost❌✅ (multi-link per session)❌❌
Resilience ModelLink failoverActive-active + seamless failoverFailover (session drop)Failover (policy re-route)
Session Continuity on Link Failure❌✅ (no drop)❌❌
Packet Loss & Jitter Handling❌✅ (TCP acceleration + FEC + retransmission + shaping)❌❌
Dynamic Path Optimization❌✅ (real-time path selection)❌⚠️ Static rules
Application Performance Optimization❌✅ (WAN acceleration + optimization)❌❌
QoS Enforcement (end-to-end)✅✅ (overlay-controlled QoS)❌ / limited❌ / limited
Deployment TimeWeeks / monthsHours / daysHours / daysHours / days
Operational ComplexityLow (but rigid)Low (managed service)Medium (DIY tuning)Medium (policy design)
Cost Efficiency (€/Mbps)❌ Very high✅ Low (uses commodity links)✅✅
Vendor Lock-inHighNone (ISP-agnostic)LowLow
Cloud / Hybrid ReadinessLimitedHigh (multi-path optimized)MediumMedium

Why comBOX Outperforms the Alternatives

Use all your bandwidth,
not just part of it.

Aggregate multiple Internet links into one full-speed connection.

No dropped sessions,
even during link failure.

Enjoy seamless connectivity and failover with zero interruption.

Enterprise-grade WAN
using commodity Internet links

Beyond SD-WAN: true bonding, real resilience, and genuine QoS.

A permanent, cost-effective
& efficient alternative to leased line services

Offer your customers a compelling alternative to traditional leased line services. With comBOX VLL, you can deliver high-performance, resilient Internet access at a significantly lower cost, while increasing your margins and recurring revenue opportunities.

Leverage a proven WAN virtualization technology to provide uninterrupted connectivity and superior performance. All without the high costs and limitations of legacy solutions.

Differentiate with next-generation connectivity services

comBOX enables you to design and deliver advanced connectivity solutions by intelligently combining multiple low-cost WAN links. Through bandwidth aggregation and real-time optimization, you can offer your customers enhanced reliability, improved performance, and true business continuity.

Combining on-premise appliances with cloud-based infrastructure gives you the flexibility to address a wide range of customer needs, from SMB to enterprise and specialized use cases.

Flexible, modular services that fit your sales strategy

comBOX services are designed to allow modular integration and customization of the available technology features.

Each solution is designed in collaboration with you, ensuring the optimal balance between performance, reliability, and cost, helping you close deals faster and build long-term customer relationships.

Why comBOX?

Independence from providers

The comBOX VLL service bundles provide uninterrupted connectivity to the Internet, which does not depend on a single ISP. The Virtual Leased Line technology creates the extra reliability for your customers with no restrictions on the type and number of the bonded connections, as well as multiple providers and connection types.

Higher speed

Leased lines, even with symmetrical speeds, often no longer meet the demands of modern applications. As a partner, you can offer a smarter alternative by combining existing leased lines with additional broadband links (such as DSL or fiber), significantly increasing total available bandwidth in a cost-effective way. This approach enables you to deliver higher performance to your customers while creating flexible, scalable, and higher-margin connectivity solutions that go beyond the limitations of traditional services.

Reasonable fees

Leased line subscriptions can be costly and inflexible for many customers. With comBOX service bundles, you can offer a more competitive alternative that delivers up to 99.95% uptime along with higher overall performance — at a significantly lower cost. This enables you to position a high-value solution that not only reduces your customers’ connectivity expenses but also improves your margins and strengthens your competitive advantage.

Professional Support

All comBOX services are delivered through our partners, ensuring you remain at the center of the customer relationship while benefiting from continuous and personalized support. Our fully managed services model enhances your capabilities by providing direct access to highly specialized network engineers, allowing you to confidently support even the most demanding deployments while reducing operational overhead and accelerating issue resolution.

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