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Introducing GTx

GTx is CallTower’s revolutionary rebiller service and portal, created for MSPs, System Integrators, Resellers, Distributors, and VARs, to radically empower Operator Connect for Microsoft Teams transactions and offerings – complete with 24/7/365 support and dedicated expertise. Teams Logo Icon


Welcome to GTx:
The Future of Operator Connect Has Arrived!


In the ever-evolving landscape of technology, particularly in the world of communications, maintaining a leading position is paramount to ongoing success. That’s why CallTower is thrilled to introduce GTx, CallTower’s revolutionary rebiller serivce and portal. Created for MSPs, System Integrators, Resellers, Distributors, and VARs, GTx radically empowers Operator Connect for Microsoft Teams transactions and offerings – complete with 24/7/365 support and dedicated expertise. GTx isn’t just a new portal; it’s a whole new approach and a complete reimagining of how technological transactions are performed.

Operator Connect

What is Operator Connect

Operator Connect is a feature within Microsoft Teams that simplifies the process of integrating Public Switched Telephone Network (PSTN) calling services with Teams. It allows organizations to use their preferred telecom operators to enable voice calling in Teams.

Enables PSTN calling

Leverage existing contracts

Operator managed infrastructure

Enhanced support and reliability

Simplified deployment

Elevate Your Operator Connect Services

GTx transforms the interaction between partners and customers with Operator Connect for Microsoft Teams, providing a seamless, effective, and innovative transaction platform. It’s crafted to empower partners to elevate their services, streamline operations, and unlock unprecedented growth possibilities in the unified communications domain. GTx also enables MSP’s to sell, implement and provide Day 2 services with Operator Connect, all powered by CallTower.

Directly Bill Your Customers

Flexibility to Add Managed Services

Taxation and Compliance for Regulatory Guidelines are Managed by CallTower

Generate Revenue from Core Offering and any Additional Features/Product Provided

Features Designed to Propel Success


Experience the ease of on boarding your customers to Operator Connect with a single, intuitive interface. From provisioning to management, porting and billing, every aspect is simplified.


Adapt and tailor your services to meet the specific needs of your clients, enhancing satisfaction and loyalty.


Benefit from the support and insights of CallTower’s seasoned Rebiller Partner Managers, dedicated to helping you maximize the potential of GTx and Operator Connect.


Gain immediate access to porting, setting up your clients and the latest features, updates, and offerings in Operator Connect for Microsoft Teams.


GTx is more than just a portal; it’s a powerful approach to equipping our partners with the tools, resources, and assistance necessary to thrive in today’s rapidly evolving technological sphere and enhance their clients’ Microsoft Teams Operator Connect journey. 

Outages and downtime cost organizations time and money. CallTower believes their customers deserve multiple paths to ensure 100% voice uptime. CallTower’s expanded offering includes a wide range of global voice networks to offer carrier diverse redundancy and peace of mind. 

Start Your Path To Excellence

Explore how GTx can benefit your business, streamline operations, and unveil new revenue streams. Visit us at CallTower’s GTx to delve deeper and commence your journey today.

CallTower’s GTx is where innovation converges with efficiency, and where your business is primed to flourish in the age of modern communications. With GTx from CallTower, your voyage to success in Operator Connect for Microsoft Teams can begin.


A revolutionary tool enabling users to easily personalize and control their CallTower services

CallTower enables our Customers to manage rapidly changing technologies through Connect – a user-friendly portal, created and developed in-house. This proprietary system ensures our customers can administer services without expertise in any one technology or hiring outside consultants to manage their UC solutions.

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