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CallTower delivers the latest technology for ongoing business success in order to exceed the expectations of our customers and partners. CallTower’s superior voice quality, network, international expansion, centralized order and support automation, geographic redundancy, Cloud/IT services and user-friendly options make us the right solution for your clients.

CallTower Solutions

CallTower delivers the world’s most advanced unified communications, contact center, and collaboration solutions.

Microsoft Teams
CallTower delivers missing key Microsoft Teams UCaaS feature gaps and functionality that is not available through other providers. Providing Microsoft Teams Direct Routing and Operating Connect, and GCC High. Along with 25+ key integrations. CallTower’s Microsoft Teams Solutions ensure the ability to leverage preferred rates and unlocks the full potential of a Microsoft Teams Phone System.

Webex Calling
With Webex Cloud Calling, organizations can make and receive calls with the Webex App on desktop and mobile devices. Employees and team members become more productive with messaging, screen and file sharing, and complete meetings capabilities now available from anywhere. The security features of Webex protect businesses from threats with encrypted phone registration, activation, call signaling, voicemail, audio, and video streams. Even solution management is secure because all administrative and end-user interfaces are encrypted.

Webex Dedicated Instance
CallTower’s global Dedicated Instance (DI) for Cisco Webex Calling is not a standalone offer but an extension of Webex Calling. DI takes advantage of Webex services to deliver an enhanced experience to customers who need to support older Cisco endpoints, local survivability solutions, or preserve integrations as part of critical business workflows. DI supports the same worldwide enterprise-grade, feature-rich calling capabilities for customers who want to preserve their UCM experience.

Webex Contact Center

The all-new Webex Contact Center experience gives customers the answers they need in the channel they prefer, all with exceptional speed and accuracy to reduce the stress in their day.


Operators, such as CallTower, will provide technical support and manage the voice network and infrastructure. Operators can also enable PSTN voice services in regions currently unavailable through Microsoft Calling Plans.

Zoom Calling

CallTower’s Zoom Calling delivers voice connectivity through a geo-redundant voice network, enabling Zoom as a corporate telephone system. With a direct connection between Zoom and CallTower’s cloud-based global voice network, CallTower offers seamless integration enabling a secure, resilient and cost-effective managed voice service that is customer focused. CallTower empowers customer experience with unified, simplified, high-quality Zoom Calling and 24/7/365 support.

Global PSTN
Global PSTN Coverage for Collaboration, UC and Contact Centers Platforms Consolidate local PSTN in the Americas, EMEA and APAC with local DID numbers and number portability in over 200+ countries worldwide and fully integrated and certified with major collaboration providers including Cisco, Microsoft, Genesys, Avaya, Zoom and NICE InContact.

Office 365
Transform the way you do business by integrating CallTower voice and conferencing capabilities to your Office 365 license, enabling your business to boost productivity and save valuable money.

International Expansion
Combine the power of global voice enablement with key business integrations and unleash the full power of a modern, enterprise-grade unified communications and collaboration solution Call, chat, or video with anyone, anywhere, inside or outside your organization, from a single, dedicated geographic number, empowered by 11 geo-redundant data centers, 70+ countries, and 6,000 cities.

CallTower Connect
A revolutionary proprietary customer portal built from the ground-up for speed and ease of use to provision and provide management tools and analytics for administrators and users. Connect simplifies the setup and management of CallTower Cisco Webex, Microsoft Teams and CT Cloud solutions within from the online portal or mobile application. CallTower Connect is built from the ground up for speed and ease of use. The application is launched from a web browser by an end user or company administrator to add or manage CallTower hosted Microsoft Teams, Cisco HCS, CT Cloud Voice, CT Cloud SIP, Email and Conferencing solutions. CallTower Connect places powerful communication tools within an easy to use application.

CT Cloud Voice
CallTower’s cost effective CT Cloud Voice delivers rock-solid stability with numerous features. With CT Cloud Voice, network operators can support customers of any size by quickly and reliably delivering feature-rich, high-quality and secure business communications solutions.

CT Cloud SIP Trunks
Great Features and Rock Solid Stability. CT Cloud SIP Trunks provide one concurrent call and includes inbound usage. With features such as 911, directory listing and caller name. Our SIP DID Packages combine the most popular SIP features and provide concurrent calls equal to twice the number of DIDs.

CT Cloud Meeting
CT Cloud Meeting powered by Zoom is a cloud video conferencing and collaboration solution for desktop and mobile. Start or join a meeting with crystal-clear, face-to-face video, high quality screen sharing, and instant messaging.

CT Cloud Boost
With fully redundant architecture, CallTower delivers higher quality network performance by optimizing thousands of cloud-based applications, including UCaaS, and Dynamics. CT Cloud Boost will deliver the quality and experience for real-time application improving overall network performance.