CallTower has launched two strategic initiatives simultaneously to modernize enterprise voice infrastructure and security. The company has announced a new standard providing six months of complimentary eSIM access for its native mobile solutions integrated with Microsoft Teams and Webex Calling.
This deployment is designed to bypass the logistical friction of physical SIM cards, allowing organizations to rapidly equip their workforces with a single-number identity that operates seamlessly across multiple devices and geographic locations.
Concurrently, CallTower launched an enterprise-grade Voice Spam Blocking solution, powered by Mutare, engineered to intercept malicious communications at the network edge. Unlike traditional endpoint filtering tools that rely on end users to ignore or manually block incoming threats, this security layer neutralizes unauthorized calls before they reach an employee's device. The platform utilizes a multi-layered defense mechanism that combines STIR/SHAKEN caller authentication with real-time global threat intelligence to verify identities.
Doug Larsen, Executive Vice President of Product & Software at CallTower, commented:
“Voice connectivity alone is no longer enough. Businesses need assurance that every interaction is legitimate. This solution transforms voice from a potential attack surface into a trusted, secure channel, giving organizations the confidence to communicate without disruption in an era of AI-driven threats.”
To counter highly evasive social engineering tactics, the platform introduces a novel "Voice CAPTCHA" system that challenges suspicious callers in real time to verify human identity. Admins are provided with a centralized dashboard to set corporate policies, monitor live traffic, and analyze call activity. The system allows organizations to begin in a monitor-only mode, establishing a baseline of normal traffic and refining rules before enabling full enforcement.
Furthermore, the solution integrates directly into existing SIEM platforms, feeding vital voice telemetry into the broader corporate security ecosystem. Meanwhile, a built-in productivity calculator quantifies the financial savings of blocked calls.
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The Market Analysis: Securing the Forgotten Vector With CallTower, Microsoft Teams, and Webex Calling
As organizations invested heavily in securing cloud environments and fortifying email servers over the past decade, the traditional phone call was largely left exposed. Today, bad actors are utilizing AI to execute sophisticated, large-scale robocall campaigns and voice scams, effectively turning enterprise voice networks into a lucrative vulnerability. Standard endpoint protections are proving insufficient against these industrialized tactics.
