Real-Life Use Case
Eliminate Unwanted Voice Traffic
Finance
This is a real-life Use Case of a Mutare Customer and provides a high-level summary of the scenario and business problems resolved with the Mutare Voice Traffic Filter solution.
The Client
California-based debt management company specializing in debt resolution, debt settlement, and customer service provided through a 150-agent cloud contact center with an A+ rating from the Better Business Bureau.
Problem Definition
This organization, which maintains customer financial data as a central part of its business operations, was being targeted by vishing attacks from threat agents attempting to breach those customer accounts. While recognizing the critical need for increased security around incoming calls, they were concerned that heavy-handed caller screening could negatively impact customer experience. They were, additionally, wary of applications using reputation databases alone for call screening and the possibility that legitimate calls from their debt consolidation agency partners might be flagged, and blocked, as suspected spam.
The Story
Using untraceable VoIP calling software to spoof their numbers and hide their identities, cybercriminals were calling into this organization’s customer support lines, posing as real customers in need of assistance with their accounts, and then attempting to trick agents into betraying protected account information. When this scheme actually led to a successful account breach, the organization’s security team recognized the critical and immediate need to protect agents and the customers they serve against fraudulent callers. Their Five9 CCaaS provider introduced them to Mutare reps, who provided a demonstration of how the Mutare Voice Traffic Filter solution adds enterprise-grade voice call analytic and filtering capabilities to the Five9 platform. Taking advantage of Mutare’s rapid API integration, the organization agreed to a free 30-day Proof of Concept hands-on trial of the Mutare solution’s full five filtering layers within their cloud call center environment. The impact of reduced calls from spammers and scammers was immediate. What’s more, using the application’s flexible custom rules builder, admins were able to create allow lists for numbers associated with their known debt consolidation partners, assuring that those calls would always ring through. After three weeks of trial, they were so convinced that they had found their solution that they agreed to roll straight from POC into a full purchase – just three months from demo to sale.
# of Incoming Calls*
# of Unwanted Calls Uncovered*
Nefarious Calls Diverted*
* Annualized

Key Decision Points
- Multi-layered call screening that is indiscernible to the callers
- Simple integration with existing Five9 CCaaS platform
- Rapid implementation
- Heightened security without added friction for callers
- Simple custom rules allowlist creation
- Improved agent productivity
These considerations, combined with Mutare’s solution capabilities, uncomplicated implementation, and unrivaled customer support, made a clear case for the purchase of the Mutare Voice Traffic Filter.
About Mutare Voice Traffic Filter
The Mutare Voice Traffic Filter (VTF) is enterprise-class software built to provide multiple layers of protection against unwanted traffic. VTF creates a barrier at the network edge, ensuring that malicious and nefarious traffic does not gain access to your network. Our open architecture is designed to work seamlessly with just about every unified communications platform, including Cisco, Avaya, Mitel, Nortel and more.
Key Features
- STIR / SHAKEN Filter
- Proprietary Dynamic DB Filter
- Spoof Radar Filter
- Voice CAPTCHA Verification
- Custom Rules Filter
- Inbound/Outbound Traffic Manager
- Personal Blocklist
- Admin Dashboard
- Admin Email Alerts
- Embedded CDR Reporting (Call Detail Records)
Quick Links
Voice Threat Survey 2026
Understand how technology and cybersecurity leaders view Voice Security as organizations face growing threats, declining trust, and increasing risk.
Voice Security for Cisco
Protection for: CUCM, CUBE, Webex Contact Center, Webex Calling
Voice Security in the Contact Center
In this 45-minute Webinar, our Voice Security experts will delve into trending voice-based threats, which often comprise up to 25% of inbound call traffic, and how you can stop them.
Higher Education, a Primary Target of Voice-Based Attacks
Higher Education is being targeted. Why? Because Educational Institutions create a ripe, irresistible prey for cybercriminals looking for big opportunities with limited resistance.
Financial Institutions Bracing for Tsunami of Voice-Based Cyber Attacks
Protecting the enterprise telephone system from voice-based attacks may be the lynchpin in the battle against the growing wave of cyber-threats in the form of social engineering, vishing and ransomware. It is time to take Voice Security seriously.
Voice Network Threat Survey 2024
The 2024 Voice Threat Survey seeks to understand how technologists and security experts view Voice as a threat vector, and as an organizational asset (critical Infrastructure) to be protected and defended.
