Open Networking For Telco

Overview

Open Networking for Telco refers to the adoption of whitebox switches, open-source NOS (primarily SONiC), and disaggregated software/hardware stacks in telecommunications environments. Telco use cases present additional challenges beyond enterprise or hyperscale deployments: carrier-grade availability requirements, government regulatory accountability, high-transaction network needs, and limited production references. Despite these barriers, validated PoCs demonstrate 50–58% cost savings with 1-hour deployment times, and the market is projected to reach $5B (Gartner).

The telco sector has been slower to adopt open networking than cloud hyperscalers, primarily because telco-specific requirements — five-nines availability, regulatory auditability, carrier-grade OAM — are not natively addressed by community SONiC or generic whitebox hardware. Rakuten Mobile, cloud-native since 2020 with ~10M subscribers, stands as the most advanced production telco reference for disaggregated open networking, demonstrating that the architectural transition is viable even under carrier-grade constraints.