High-Capacity. Secure. Resilient
DWDM and OTN Backhaul from Coastal Landing Sites to Inland Core Infrastructure
Submarine cables carry the majority of the world’s international data, and the terrestrial connection from the Cable Landing Station (CLS) to inland data centers (DCs) is where Einsof technology plays a vital role.
Einsof delivers open, scalable DWDM and OTN solutions for CLS-to-DC backhaul, enabling resilient, high-capacity, low-latency transport. Designed for carriers and hyperscalers, our platforms deliver performance monitoring and built-in redundancy at the critical demarcation point between the submarine cable operator and the terrestrial network provider.
The Critical Role of Terrestrial Backhaul in Submarine Systems
Global Connectivity Starts at the Shore — And Ends in the Cloud
The Cable Landing Station (CLS), referred to in some countries as a Cable Head-End, Landing Hub, or Subsea Terminal Facility, acts as the gateway between the global submarine system and the inland infrastructure of hyperscalers, data centers, carriers and core backbone nodes.
The journey from the coastal CLS often spans tens, hundreds or thousands of kilometers inland, requiring:
High-Capacity DWDM Links
Dense Wavelength Division Multiplexing for massive data capacity throughput.
SLA-Grade Transport
Service Level Agreement-backed transport for guaranteed performance.
Advanced Diagnostics
Tools for real-time monitoring, fault detection, and automated provisioning.
Security: Layer-1 Encryption
Hardware-based encryption for robust data security at the optical layer.
Multi-Vendor Compatibility
Interoperability across vendor ecosystems with industry-standard OTU2/2e, OTU4, and 10Gb/100Gb Ethernet services.
Diverse Path Protection
Supports physically diverse routing for coastal-to-inland and cross-border links, ensuring path redundancy and minimizing disruption.
Why Einsof for Submarine Backhaul?
Einsof solutions simplify inland backhaul from the CLS to multiple inland sites. Our technology enables resilient, carrier-grade DCI networks with centralized visibility and control, making it easy to interconnect multiple data centers and regional hubs from a single landing station.
We specialize in the most critical segment: connecting your submarine investment to inland infrastructure, including hyperscale data centers, internet exchanges (IXs), cloud regions, and end customers – with precision, resilience, and operational simplicity at the network demarcation point.
Purpose-Built for CLS-to-DC Backhaul Scenarios
| Extending Subsea Capacity to Multi-Site DC NetworksBuild resilient, carrier-grade mesh DCI from the CLS to multiple inland data centers.Modular, pay-as-you-grow architecture for seamless expansionFlex Grid ROADMsFlex Grid design enables variable channel spacing and 100G–1.6T scalability | ||
| Resilience & SLA VisibilityEinsof redundant architecture ensures protection and fast fault recovery.Einsof SofWatch NMS centralizes provisioning and monitoring across devices and client links, providing real-time metrics and SLA-grade performance validation. | ||
| Vendor-Neutral & Multi-Use ArchitectureInteroperate with any OTN interface, or Layer 2/3 switching system.Einsof open design eliminates vendor lock-in and eases integration across the submarine-terrestrial demarcation point.Supports OTU2/2e, OTU4, 10Gb/100Gb Ethernet services | ||
| Compact, Efficient, and ScalableIdeal for rack-constrained CLSs and remote relay sites with a compact form factor, high capacity per 1RU, and low power consumptionSupports 10G to 800G, up to 51.2 Tbps per fiber strand and 8T per device, offering flexible uplink options to match performance and budget goals. |
Real-World Use Cases
Einsof solutions are ideal for:
- Telecom service provider – Building protected backhaul link connected to a subsea network, shared by three telecom service providers.
- Southeast Asian regional operator – extending subsea landing capacity to multiple inland cities using 400G and 800G DWDM links
- Wholesale fiber provider – monetizing CLS-to-DC fiber through SLA-assured Transport-as-a-Service offerings
- Government & financial data providers – ensuring secure coastal-to-inland transport with full optical encryption
- A submarine cable customer – multiple upcoming CLS sites. Selected Einsof to interconnect landing stations with inland data centers using 400G DWDM, with an architecture that allows expansion to 51.2T per fiber strand.
