CallTower
Procurement partnerAbout
CallTower is a global cloud communications provider that has delivered enterprise-class UCaaS, CCaaS, and contact center solutions since 2002. The company integrates voice, collaboration, and AI-powered customer experience technologies across platforms including Microsoft Teams, Webex by Cisco, Zoom, Genesys, and Five9. CallTower operates across 80+ countries with 15 geo-redundant data centers and provides managed services, professional services, and 24/7/365 support.
Details
VenSearch Intelligence
Ideal Customer
- CallTower's own battle card materials explicitly state that its value is best realized by companies with more than 100 employees that need to easily scale and add locations.
- The ideal customer profile includes multi-location enterprises or dynamic workforces migrating from legacy phone systems to cloud-based communications, and companies seeking a single vendor for all UCaaS, CCaaS, voice, and collaboration services under one invoice and one support relationship.
Key Differentiators
- CallTower differentiates primarily through its platform-agnostic, multi-vendor strategy — simultaneously supporting Microsoft Teams, Webex by Cisco, and Zoom alongside multiple CCaaS platforms (Genesys, Five9, Webex Contact Center) — positioning itself as a single managed services partner that eliminates vendor finger-pointing.
- Its proprietary CallTower Connect portal provides a single-pane-of-glass for provisioning, analytics, and administration across all supported platforms, and its One Click Failover solution provides unique business continuity for Microsoft Teams deployments.
Industries Served
- CallTower serves a broad range of industries including healthcare, financial services, education, government, manufacturing, retail, hospitality, and enterprise technology.
- The company has developed specific vertical solutions for Microsoft Teams targeting healthcare, government, education, and non-profit organizations, and supports defense contractors and government agencies via its GCC High Teams Direct Routing offering with CMMC compliance alignment.
Service Coverage
- CallTower operates globally, delivering cloud communications services across 85+ countries and more than 6,000 cities, supported by 15 geo-redundant data centers strategically located in North America (Chicago, Salt Lake City, Dallas, Los Angeles, Virginia, Atlanta), Europe (London, Frankfurt), and Asia-Pacific (Hong Kong, Sydney).
- Its Microsoft Teams Operator Connect service specifically covers 27 countries spanning the US, Canada, EMEA, LATAM, and APAC regions.
Partnerships
- CallTower holds deep, certified partnerships with its three primary technology platforms: Microsoft (as a certified Microsoft Solutions Partner with Calling for Teams Advanced Specialization, Operator Connect provider, and newly earned Microsoft Support Services designation), Cisco (as a Cisco Powered Premier Provider Worldwide with Advanced Collaboration Architecture Specialization and certified Webex Calling and Webex Contact Center Powered Service designations), and Zoom (as an authorized BYOC and Zoom Phone provider).
- For contact center, CallTower is a certified partner of both Genesys (with Inoria holding Genesys Premier Partner status and named 2024 Genesys North America Canada Partner of the Year) and Five9 (recognized with the 2022 Five9 Global Partner Rising Star Award).
Company Size & Ownership
- CallTower was founded in 2002 and is headquartered in South Jordan, Utah, with estimated annual revenue of approximately $129.7 million per multiple third-party data sources, though some sources cite figures ranging from $58M to $130M.
- The company employs approximately 242–350 people depending on the source, with a reported headcount of roughly 255 as of mid-2026; this count expanded meaningfully with the January 2025 acquisition of Inoria, which added approximately 55 specialized CCaaS and CX professionals.
Compliance & Certifications
- CallTower supports compliance across multiple regulatory frameworks, notably offering GCC High Teams Direct Routing for organizations subject to CMMC, ITAR, and DoD requirements, and was notably described as the first provider of Direct Routing services for the GCC High environment.
- The company's Cisco Webex partner toolkit references SOC 2, SOC 3, HIPAA, and FedRAMP compliance as part of Cisco's security posture.
Compiled from public sources by VenSearch · Last researched October 13, 2026
Offerings
43 offerings24/7/365 Support
CallTower provides around-the-clock customer support every day of the year through a dedicated customer service team and experienced communications engineers. Support covers technical issues, provisioning, billing, and client success across all CallTower services.
Analytics for Microsoft Teams
CallTower provides an analytics solution specifically for Microsoft Teams environments, delivering insights into call performance, usage, and communication patterns. Organizations use this tool to monitor and optimize their Teams communications deployments.
Analytics for Webex by Cisco
CallTower offers an analytics solution for Webex by Cisco, providing reporting and performance monitoring for enterprise Webex deployments. This tool enables organizations to track communication metrics and improve operational efficiency.
Ascend Teams Contact Center
CallTower offers Ascend Teams Contact Center as a CCaaS platform option within its contact center portfolio. This solution is listed among CallTower's CCaaS platform offerings for enterprise contact center deployments.
CallTower Connect
CallTower Connect is a proprietary customer administration portal that gives organizations centralized visibility and control across users, provisioning, analytics, and communication management workflows. It enables IT and CX teams to simplify adds, moves, and changes, reduce administrative overhead, and streamline communications management.
CallTower Contact Center (CT Contact Center)
CT Contact Center is CallTower's proprietary end-to-end contact center solution designed to simplify operations and reduce IT dependency. It features streamlined workflows, simplified agent training, robust analytics, and scalable design for evolving business requirements.
CCaaS and CX Consulting Services
CallTower offers consulting and advisory services to define CX strategy, platform selection, and architecture aligned to business goals. Support extends from initial planning through ongoing optimization for contact center and customer experience environments.
Cisco Collaboration (Webex by Cisco)
CallTower provides Cisco collaboration solutions including unified communications capabilities for businesses of all sizes. The offering delivers a seamless user experience with high-quality, scalable web and video capabilities supporting mobility, messaging, conferencing, and presence management.
Compliance Recording
CallTower offers Compliance Recording as a key integration for enterprise communications, capturing and storing voice interactions to meet regulatory and legal requirements. This solution supports compliance across Microsoft Teams, Webex, and other platforms.
Contact Center Professional Services
CallTower provides professional services for CCaaS and Conversational AI deployments, covering over 1,000 successful implementations across platforms including Genesys and Five9. Services span strategy, custom deployment, platform integration, CX and EX optimization, workforce management, PCI DSS compliance, and ongoing support.
Conversational AI / CallTower AI
CallTower's in-house Conversational AI (CAI) practice designs and deploys intelligent automation including Intelligent Virtual Agents, Agent Assist, and Agentic AI capabilities. Each solution is tailored to the customer's contact center environment and integrates with CCaaS platforms to drive efficiency, personalization, and measurable business outcomes.
CRM Integration
CallTower offers CRM Integration as part of its key integrations portfolio, connecting enterprise voice and communications platforms with CRM systems to streamline workflows and improve agent productivity. Supported CRM platforms include Salesforce, Dynamics, and SAP.
CT Cloud Solutions
CT Cloud is CallTower's proprietary cloud communications platform that delivers feature-rich, high-quality, and secure business communications for customers of any size. It supports mobility, messaging, conferencing, and presence management through a scalable cloud environment.
CT SIP
CallTower offers CT SIP, a SIP trunking networking solution that provides carrier-grade voice connectivity for enterprise communications systems. It is listed under CallTower's networking solutions and supports voice uptime with carrier diverse flexibility.
CT Unite
CT Unite is listed as a productivity tool within CallTower's portfolio. It is offered alongside Microsoft 365, Microsoft Copilot, and CT Fax as part of CallTower's suite of communications and productivity solutions.
Device Migration
CallTower offers Device Migration services to help organizations transition from legacy communications hardware to modern cloud-based platforms. This service minimizes disruption during the migration of endpoints and devices.
Dynamic E911
CallTower offers Dynamic E911 as a key integration for enterprise communications, enabling accurate emergency call routing based on the caller's real-time location. This integration supports compliance with E911 regulations across cloud voice deployments.
Five9 Blended Cloud Contact Center
CallTower provides Five9, a feature-rich cloud contact center platform built for flexibility, reliability, and intelligent engagement. Capabilities include AI-powered Virtual Agents for voice and digital self-service, Agent Assist with real-time guidance, configurable AI Agents, omnichannel engagement and routing, and enterprise-grade scalability.
GCC High Teams Direct Routing
CallTower offers GCC High Teams Direct Routing for organizations with government compliance requirements. This solution enables enterprise calling within Microsoft Teams environments subject to GCC High security and compliance standards.
Genesys Cloud CX
CallTower delivers Genesys Cloud CX, a leading all-in-one cloud contact center platform for omnichannel customer experience. Key capabilities include agentic AI with autonomous virtual agents, AI-powered Agent Assist, workforce engagement and analytics, and secure cloud-native architecture.
Global Enterprise Voice Solutions
CallTower delivers global enterprise voice services with connectivity across 80+ countries and 15 geo-redundant data centers. This includes a range of circuit providers to offer carrier-diverse flexibility, voice uptime protection, and geo-redundant infrastructure for enterprise-grade reliability.
Managed Services & Support
CallTower provides ongoing managed services including monitoring, optimization, and operational support to maintain performance, reliability, and scalability of enterprise communications and contact center environments. The company offers 24/7/365 access to experienced communications engineers and CX specialists.
Microsoft 365
CallTower resells and supports Microsoft 365 as part of its productivity tools portfolio. This offering is bundled with CallTower's unified communications and voice solutions to provide an integrated enterprise productivity and communications experience.
Microsoft Copilot
CallTower offers Microsoft Copilot as part of its AI solutions and productivity tools portfolio. This AI-powered assistant integrates with Microsoft 365 and Teams to enhance enterprise productivity.
Microsoft Teams Calling (Operator Connect)
CallTower provides Microsoft Teams Operator Connect, enabling enterprise voice calling directly within Microsoft Teams. As a certified Microsoft Solution Partner, CallTower offers personalized implementation, adoption, training, and 24/7/365 support for Teams calling deployments.
MS Teams Premium
CallTower provides Microsoft Teams Premium as an advanced tier of Teams collaboration with additional AI, security, and meeting intelligence features. It is offered as part of CallTower's Microsoft solutions portfolio.
One Click Failover
CallTower's One Click Failover solution provides voice continuity protection for Microsoft Teams and other UCaaS platforms. It allows organizations to quickly switch to a backup voice path to minimize downtime during outages or network disruptions.
Partner Program
CallTower's Partner Program enables channel partners to resell and refer CallTower's cloud communications solutions, with financial rewards and support. The program includes an Agency Partner Program, MSP Partner Program, and the invite-only Upfront Advantage Partner Program designed to accelerate revenue realization.
Sestek Contact Center
CallTower offers Sestek Contact Center as an AI-powered contact center solution within its portfolio. This solution is listed under CallTower's AI Solutions offerings for customer experience and contact center operations.
Software Faxing (CT Fax)
CallTower provides cloud-based software faxing through its CT Fax product, enabling organizations to send and receive faxes digitally without traditional fax hardware. This solution integrates with existing business communications infrastructure.
Staff Augmentation
CallTower offers staff augmentation services providing certified CCaaS, CX, and AI experts to support customer projects, fill resource gaps, and maintain operational continuity. This service extends client teams with experienced communications and contact center specialists.
Teams Direct Routing
CallTower delivers Direct Routing for Microsoft Teams, connecting enterprise voice infrastructure to the Teams platform. This solution supports global calling plans integrated with Microsoft 365 and Microsoft Teams for a seamless native experience.
Teams Mobile eSIM
CallTower offers a Teams Mobile eSIM solution that enables mobile enterprise calling through Microsoft Teams on eSIM-enabled devices. This extends Teams calling capabilities to mobile users without requiring a separate phone number.
Texting for Microsoft Teams
CallTower offers SMS and business texting capabilities integrated directly within Microsoft Teams. This solution enables enterprise users to send and receive text messages through the Teams interface.
Texting for Webex Calling
CallTower provides SMS and business texting integrated with Webex Calling, enabling enterprise users to send and receive text messages through the Webex platform. This extends communications capabilities beyond voice and video.
Voice Spam Blocking
CallTower provides Voice Spam Blocking as a key integration to protect enterprise communications from unwanted or fraudulent calls. This service filters and blocks spam voice traffic before it reaches end users.
Webex Calling
CallTower provides Webex Calling by Cisco as part of its unified communications portfolio. The solution delivers cloud-based calling with high-quality, scalable voice capabilities for enterprise businesses.
Webex Contact Center
CallTower offers Webex Contact Center, a future-ready contact center platform designed for fast, accurate, and personalized customer interactions. Capabilities include digital-first engagement and automation, AI-assisted customer journeys, and flexible deployment with enterprise integrations.
Webex Dedicated Instance
CallTower offers Webex Dedicated Instance, a Cisco collaboration solution providing a dedicated, private cloud environment for enterprise communications. This offering is designed for organizations requiring enhanced security and customization in their Webex deployment.
Webex Go eSIM
CallTower provides Webex Go eSIM, enabling mobile enterprise users to make and receive calls through Webex using eSIM-enabled devices. This extends Webex Calling capabilities natively to mobile devices.
Workforce Management (WFM)
CallTower provides Workforce Management solutions for contact centers that streamline forecasting, scheduling, and intraday management. These solutions improve operational efficiency and elevate agent performance within CCaaS environments.
Zoom Calling / Zoom Phone
CallTower delivers Zoom Phone and Zoom Calling services, enabling enterprise voice calling through the Zoom platform. The solution is managed and supported by CallTower with implementation, provisioning, and ongoing support services.
Zoom Contact Center
CallTower provides Zoom Contact Center as part of its CCaaS platform portfolio, enabling organizations to run contact center operations within the Zoom platform. CallTower supports implementation, integration, and ongoing management of this solution.
Considering CallTower?
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