Heksagon Flash Call Prevention Solution

Flash calls are zero-duration or very short calls used as an alternative to A2P SMS for delivering OTP codes. The OTP is typically embedded in the CLI (calling line identification). While GSMA doesn't classify flash calling as illegal, it poses significant challenges: revenue erosion from A2P SMS, limited traceability, QoS issues, network congestion, and potential security risks. Operators often face flash calls from unregulated sources using CLI spoofing and unauthorized termination practices.

Our solution is built on a proven Voice Firewall platform with 15+ years of market leadership. Heksagon uniquely combines comprehensive traffic visibility, AI-driven detection, and multi-domain intelligence to effectively detect both flash calls and Text-to-Speech (TTS) flash calls, which most competitors cannot yet handle. We achieve 99.85% detection accuracy with <0.1% false positives. Finally, we provide comprehensive post-deployment support, including: 24/7 technical support, regular product updates, training for operator staff, dedicated account management, complete technical O&M support (L1/L2/L3), bug fixes and software updates, administrative training, and a 3-6 month "babysitting" period.

Yes, absolutely. Heksagon offers an exclusive Flash Call Monetization solution alongside our prevention capabilities. Our approach enables operators to whitelist legitimate enterprise flash call traffic, deliver it seamlessly to end users, and generate revenue through flexible commercial models—while simultaneously blocking unauthorized traffic that impacts QoS. This hybrid strategy transforms flash calls from a revenue threat into a new revenue stream, similar to how A2P SMS is monetized.

Our solution integrates seamlessly with existing infrastructure via SIP, CAMEL/INAP, or API interfaces. If you have the necessary hardware or VMs ready, the overall project implementation timeframe is about 6-8 weeks (platform deployment, core network integration, UAT testing, rule configuration, and traffic migration). The timeline depends on support from the MNO's technical teams (core network planning, infrastructure, and PMO).

We combine statistical profile evaluation with machine learning caller behavior analytics to ensure exceptional reliability. Our approach includes: stepwise introduction of prevention with monitoring of reference traffic, conversion tracking to other channels, regular penetration testing, limiting intervention intervals to the shortest possible duration, and thorough testing of all rules before application. This disciplined process achieves a <0.1% false positive rate while maintaining robust protection.

Comprehensive reporting is available for both MNOs and enterprise clients. MNO dashboards show: revenue earned per enterprise client (billing reports), hourly/daily/weekly/monthly blocked flash call volumes, subsequent A2P SMS conversions, OTTs generating flash calls and TTS calls, and network QoS metrics (latency, success rate). Enterprise portals provide: campaign management, dashboard reports, billing reports, traffic volumes, chargeable event summaries, geo-targeted campaign configuration, live traffic monitoring, and billing previews. All reports support drill-down to individual call records and can be exported in PDF, Excel, or CSV formats with automated distribution.