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Discover a comprehensive Solutions Center hub with resources, documentation, and expert guidance for all your business communication needs.

Access our dedicated customer service team around the clock, every day of the year. Get immediate assistance when you need it most.

Stay informed with real-time service updates, maintenance alerts, and important system notifications to keep your business running smoothly.

Monitor live system performance updates and network health metrics to ensure optimal communication service delivery across all platforms.

Technical support escalation for critical issues

Project implementation and deployment issues

Sales inquiries and contract negotiations

Billing disputes and account management

Strategic account growth and optimization

There is no better relationship in the industry than ones CallTower has with its partners. Here are just a few things that make working with us truly awesome.

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At CallTower, we consider our channel partners as family, valuing successful relationships through excellent support and financial rewards.

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Discover Are benefits of our Agency Partner Program for your business. Unlock revenue streams, scalable growth, and extensive support.

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CallTower's MSP Partner Program empowers service providers by simplifying taxation and enhancing efficiency through tools including the GTx self-service platform.

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GCC High Teams Direct Routing

CallTower is the only proven voice provider delivering cloud-based Direct Routing in GCC High since 2019 to support Microsoft 365 GCC High (MSFT 365 GCCH) for government contractors that work with the Department of Defense.
GCC High

An Integrated GCC High Microsoft Teams Experience

DoD Government Contractors are eligible for GCC High in Azure Cloud. CallTower is the only provider enabling cloud-based Teams voice in GCC High.  CallTower delivers GCC High with Conferencing and PSTN via Microsoft Teams Direct Routing.

Microsoft GCC High (GCCH) meets the unique and evolving requirements of contractors holding or processing DoD-controlled unclassified information (CUI), Cybersecurity Maturity Model Certification (CMMC),  or subject to International Traffic in Arms Regulations (ITAR).

This solution ensures a personalized:

Omnichannel

Implementation

Workforce engagement & management

Adoption

Customer self-service

Training

Support

As a Microsoft Partner, CallTower’s monitoring and management services provide the highest quality user experience

Improve Microsoft 365 GCC High with CallTower Collaboration Hub Within GCC High

Generally, most businesses prefer to use Microsoft Teams as their primary collaboration resource tool. After the recent updates, businesses and organizations using the GCC High edition of Microsoft 365 (M365 GCCH) have seen an increase in productivity due to the improved capabilities and functionalities that more closely reflect the commercial version. Administrators have the ability to place restrictions on who employees can converse.

Now, those organizations leveraging Microsoft 365 GCC High environments can add voice and audio conferencing to their systems with Microsoft Teams Direct Routing from CallTower. Chats and team calls are now easier as users can directly communicate with others who are not a part of the same workplace. Microsoft 365 GCC High meets the unique and evolving requirements of contractors holding or processing DoD controlled unclassified information (CUI), Cybersecurity Maturity Model Certification (CMMC), or subject to International Traffic in Arms Regulations (ITAR).

CallTower enables cloud-based Microsoft Teams Direct Routing voice capabilities within MSFT 365 GCC High. CallTower’s voice-optimized network provides the service, manages the network upgrades and integrates the technology and applications with around the clock monitoring by our Network Operations Centers. By offering redundant connections through leading providers, CallTower can connect to almost any place at any time. CallTower also provides dedicated lines and global Session Initiated Protocol (SIP) Trunking all with 24x7x365 monitored services to ensure maximum uptime and available dynamic application failover.

CallTower is the only voice provider delivering cloud-based Direct Routing in GCC High to support Microsoft 365 GCC High (MSFT 365 GCCH) for government contractors that work with the Department of Defense.

The CallTower Advantage

Network and platform are completely optimized for voice
Re-route phone numbers when Microsoft has an outage
24/7/365 – Tier 1 & Tier 2 support
Emergency services in 36 international countries
Seamless porting from any platform
No networking or edge equipment needed

Navigating Microsoft Teams GCC High [On Demand Webinar]

William Rubio (CRO at CallTower) and Bill Wootton (C3 Integrated Solutions, President & Founder) present an action-packed 30-minute webinar exploring Microsoft Teams Direct Routing and Microsoft 365 for GCC High.

CallTower and C3 Integrated Solutions bring together the technical experience and knowledge required to overcome the technical challenges of voice-enabling Microsoft 365 GCC High.

Microsoft Teams GCC High
Microsoft Teams GCC High

GCC High Teams Direct Routing