Introduction
The global telecom industry faces a growing challenge with robocalls and voice fraud, costing billions annually and eroding trust in communication networks. Fraudsters exploit vulnerabilities to launch sophisticated attacks, targeting wholesale voice termination carriers due to their high traffic volumes.
As regulatory scrutiny intensifies, carriers must adopt robust security measures to protect revenue and reputation. Teloz, a leader in telecom security, offers innovative tools to safeguard voice traffic, empowering carriers to stay ahead of threats.
Understanding the Threat Landscape
What Are Robocalls?
Robocalls are automated calls delivering pre-recorded messages, ranging from telemarketing pitches to malicious scams. Types include spoofed calls, where caller IDs are falsified to mimic trusted entities, and scam calls designed to steal personal information or money.
Voice Fraud in the Telecom Industry
Voice fraud encompasses several schemes:
- International Revenue Share Fraud (IRSF): Fraudsters generate calls to premium-rate numbers, sharing profits with rogue operators while carriers bear termination costs.
- SIM Boxing: Criminals use devices with multiple SIM cards to bypass international rates, routing calls as local traffic.
- CLI Spoofing: Manipulating the caller ID to disguise fraudulent calls as legitimate, deceiving recipients.
Key Stats Highlighting the Problem
- In 2025, voice fraud led to $38.95 billion in global losses, per the CFCA’s Global Fraud Loss Survey.
- The Global Anti-Scam Alliance reported $1.03 trillion in scam-related losses, including robocalls, in 2025.
- Regional impacts vary, with North America and Europe facing significant revenue and trust erosion due to high robocall volumes.
Why Wholesale Voice Carriers Are at Risk
Wholesale voice carriers handle massive call volumes, making them prime targets for fraudsters seeking to exploit unmonitored traffic. Without real-time oversight, fraudulent calls blend with legitimate ones, leading to revenue losses and chargebacks.
Persistent fraud damages brand trust, degrades call quality, and invites regulatory penalties, as authorities demand stricter controls.
Advanced Technologies to Combat Robocalls & Voice Fraud
STIR/SHAKEN Protocols
STIR/SHAKEN (Secure Telephone Identity Revisited/Signature-based Handling of Asserted Information Using Tokens) authenticates caller IDs using cryptographic signatures.
Originating carriers sign calls, and receiving carriers verify legitimacy, reducing spoofing risks. In the U.S., 66% of providers have adopted STIR/SHAKEN by October 2024, with ongoing global expansion.
AI-Powered Call Analytics & Pattern Recognition
Advanced analytics monitors call patterns, flagging anomalies like sudden traffic spikes or calls to high-risk destinations. Machine learning refines detection, adapting to evolving fraud tactics and minimizing false positives.
Voice Firewall & Real-Time Threat Detection
Voice firewalls block suspicious traffic instantly, using predefined rules and dynamic threat intelligence. Real-time monitoring ensures fraudulent calls, such as robocalls or IRSF attempts, are stopped before completion.
Blockchain in Voice Traffic Validation
Blockchain creates tamper-proof records of call transactions, ensuring transparency. Smart contracts enforce routing agreements, preventing unauthorized traffic and enhancing trust among carriers.
Reputation-Based Call Routing
Carriers assign trust scores to traffic sources based on historical behavior. Low-scoring routes are flagged or blocked, prioritizing high-quality, verified traffic to improve service reliability.
Regulatory Compliance and Industry Standards
Global regulators enforce anti-fraud measures:
- FCC (U.S.): Mandates STIR/SHAKEN adoption and fines non-compliant providers.
- TRAI (India): Implements strict guidelines to curb spoofing and unsolicited calls.
- Ofcom (UK): Promotes caller ID authentication and fraud reporting.
Organizations like the ITW Global Leaders Forum and GSMA advocate for standardized protocols, fostering collaboration to combat cross-border fraud. Compliance strengthens carrier credibility and avoids penalties.
Teloz’s Approach to Securing Voice Traffic
Teloz delivers cutting-edge security for wholesale voip carriers, combining advanced tools with seamless integration. Its platform offers real-time fraud detection, dynamic call blocking, and detailed reporting to identify threats instantly.
Teloz partners with trusted global routes, ensuring compliance with regulations like STIR/SHAKEN. Scalable solutions cater to carriers of all sizes, enhancing security without compromising performance.
Best Practices for Wholesale Voice Carriers
- Multi-Layered Security: Combine firewalls, analytics, and authentication protocols for comprehensive protection.
- Verified Routes: Partner with transparent, reputable carriers to minimize fraud risks.
- Regular Audits: Analyze call patterns to detect irregularities early.
- Education: Train partners and resellers to recognize fraud indicators, fostering a vigilant ecosystem.
The Business Impact of Anti-Fraud Implementation
Effective fraud prevention yields significant benefits:
- Revenue Protection: Reduced chargebacks and IRSF losses preserve profits.
- Enhanced Trust: Reliable routes improve Quality of Service, boosting partner confidence.
- Customer Satisfaction: Fewer scam calls enhance end-user trust, reducing churn.
- Competitive Edge: Secure operations attract clients seeking dependable carriers.
Final Thoughts
The future of voice communication hinges on robust security. Collaboration among carriers, regulators, and technology providers is essential to outpace fraudsters. Investing in anti-robocall and anti-fraud solutions is no longer optional—it’s critical for survival in the wholesale voice market. Teloz stands ready to empower carriers with the tools needed for a secure, trusted network.
About Teloz
Teloz is a next-generation telecom platform empowering wholesale voice providers with advanced security, smart call routing, and global scalability. From fraud detection to regulatory compliance, Teloz is your trusted partner for secure and reliable voice communication. Learn more at teloz.com.
