At volte.io, we deliberately design our platform around 99.9% to 99.95% availability – because it reflects real-world requirements, not theoretical ideals.
Availability vs. Reality
Let’s translate availability into actual downtime:
- 99.9% → ~8 hours 45 minutes per year
- 99.95% → ~4 hours 20 minutes per year
- 99.999% → ~5 minutes per year
While five nines sounds compelling, achieving it requires a massive increase in system complexity and cost, often without delivering proportional value to end users.
The Economics of Resilience
Each additional “nine” dramatically increases:
- Infrastructure duplication (geo-redundant data centers)
- Stateful synchronization complexity (e.g., IMS, subscriber data)
- Operational overhead (24/7 NOC, failover testing)
- Vendor lock-in risks
For MVNOs and private network operators, this leads to a key question:
Does the business really benefit from reducing downtime from a few hours per year to a few minutes – at 10–20x the cost?
In most cases, the answer is no.
Dependency Chains Limit End-to-End Availability
MVNOs and private networks are not isolated systems. They depend on:
- Host MNO infrastructure (RAN, roaming)
- External platforms (SMS, billing, interconnect)
- Cloud providers and IP transport
Even if the core network itself achieves five nines, end-to-end service availability is constrained by external dependencies.
Designing for extreme theoretical uptime inside one component does not eliminate real-world outages elsewhere.
What Matters More Than “Five Nines”
Instead of chasing maximum theoretical uptime, we focus on what actually impacts users:
1. Fast Recovery (Low MTTR)
Short outages with rapid recovery are far less disruptive than rare but long incidents.
2. Graceful Degradation
Not every failure needs to be catastrophic. Systems should degrade intelligently:
- Voice fallback options
- Partial service continuity
- Session recovery mechanisms
3. Operational Simplicity
Simpler systems are:
- Easier to operate
- Easier to debug
- Less prone to cascading failures
Tailored for MVNO and Private Network Use Cases
Typical expectations in our target markets:
Private LTE/5G Networks
Planned maintenance windows are acceptable. Local resilience is more important than geo-redundancy. Target: ~99.9%.
MVNO Deployments
No full service outages. Some service degradation is acceptable. Target: ~99.9% to 99.95%.
These targets align with both customer expectations and commercial viability.
A Pragmatic Approach to High Availability
Our architecture is designed to deliver:
- Robust baseline availability (99.9%–99.95%)
- Rapid failover and recovery mechanisms
- Cost-efficient scaling (bare metal + cloud burst)
- No unnecessary architectural complexity
This approach ensures that resilience is achieved where it matters most, without overengineering the system.
Conclusion
Five nines availability is a legacy benchmark from a different era of telecom.
For MVNOs and private networks, the smarter strategy is:
Design for Resilience, Recovery, and Efficiency
At volte.io, we build systems that are reliable, scalable, and economically sound – because that’s what real-world networks need.