The New Threats to MNO Revenue: Why Omnichannel Firewalls Are Critical

The telecom industry never stands still but for Mobile Network Operators (MNOs), change has rarely felt so challenging. 

From a surge in flash call authentication to the unstoppable rise of omnichannel customer experiences, MNOs are battling to protect their revenue, their subscribers, and their future.

Yet, what if these challenges could

become opportunities?

Mobile subscribers today don’t think twice before jumping between SMS, voice, RCS, WhatsApp, or even brand apps and why should they? The world has gone omnichannel. But for MNOs, this freewheeling communication landscape brings huge complications: new traffic patterns, new fraud vectors, and new revenue gaps.

👉 Flash Calls: Opportunity or Threat?

Flash calls are one of the biggest shifts in recent years. By enabling one-time verification codes through a missed call (with zero-duration), brands save money compared to A2P SMS. That sounds great for them but terrible for operators, who lose monetizable A2P SMS traffic.

Estimates suggest that the global SMS authentication revenue stood at $39 billion in 2022. Yet flash calls have been simultaneously projected to reach 130 billion transactions globally by 2026 which is a staggering revenue threat if left unmanaged.

Flash calls also slip through conventional monetization routes because they aren’t billed like normal answered calls, and their international transit routes open doors to fraud.

👉 Omnichannel Communication: Growing Complexity

Customers now demand seamless experiences and they’ll use every channel they can. This means MNOs must look beyond traditional voice or SMS. Platforms like CPaaS, CCaaS, and UCaaS are flooding the market, and if MNOs cannot match their agility, they risk being left behind.

👉 The Rising Fraud Risk

More channels mean more opportunities for fraudsters — from spam to malware like flubot. Traditional SMS firewalls aren’t enough anymore.

So, what can MNOs do?

Omnichannel Firewalls: Monetize and Protect

The solution is clear: protect every channel. An omnichannel firewall does exactly that, expanding the security and revenue-protection benefits of an SMS firewall to Voice, MMS, RCS, and beyond.

With an omnichannel firewall, MNOs can: 

✔ Detect flash call patterns and monetize them 

✔ Control spam and fraud across channels 

✔ Track, monitor, and analyze traffic in one place 

✔ Stay agile while customer habits evolve

Whether MNOs choose separate systems for voice and SMS firewalls or a unified omnichannel platform, the end goal is the same: don’t let new technologies like flash calls cannibalize revenue. Instead transform them into new revenue streams.

Conclusion: Flash calls and omnichannel traffic aren’t going away. In fact, they will accelerate. MNOs that adapt with a smart, future-proof omnichannel firewall strategy will be the ones to keep customers protected — and their revenue healthy.

👉 Ready to protect your network? NexumTech is here to help.

NexumTech specializes in designing, deploying, and managing advanced omnichannel firewall solutions tailored for mobile network operators. From safeguarding against flash call abuse to enabling monetization across voice, SMS, MMS, and RCS, we deliver the tools you need to stay ahead of fraud, secure subscriber trust, and defend your revenue streams.

Reach out to us now and future-proof your network.