Communicate Securely With Teams Phone
Microsoft Teams forGCC High
Start making and taking calls with Direct-Routed Teams Phone for GCC High environments.

Powering 27M+ minutes/month for 500+ companies, across 35+ regions worldwide










































Process
Add Secure Communication to M365 GCC High
Implementation
HelloTeams’ automation technology means deployment takes weeks instead of months.
Adoption
Bespoke change management solutions make adopting Teams Phone easier than ever.
Support
With 24/7 priority support and an uptime of 99.99%, HelloTeams keeps you connected when you need it most.

Why HelloTeams
Faster Deployment.
A Fraction of the Cost.
Most Teams Direct Routing solutions for GCC High are complex, expensive, and time-consuming to deploy. They need specialist implementation, which carries human error risks, and can be costly to manage over time.
That’s why HelloTeams uses built-in automation to accelerate every part of the Microsoft Teams lifecycle — unlike legacy VoIP systems. Deployment for GCC High with HelloTeams takes, on average, one to two weeks – up to 10 times faster than the standard 12–24 weeks. And it’s more affordable, with a CapEx tag that’s, on average, up to 600% less than direct-routing solutions from other providers.
Most importantly, HelloTeams is backed by enterprise-grade security software, keeping your information flows compliant with standards like CMMC 2.0. Full number management is included — port existing numbers or request new GCC High-compliant ones.
Suitability
Designed for Defence Contractors
Microsoft Teams for GCC High is purpose-built for contractors with sensitive information flows.





GCC High
What Is GCC High?
Office 365 Government Community Cloud (GCC) High is a cloud environment specifically designed for Department of Defence personnel.
Its compliance and security requirements are much more comprehensive than commercial M365 environments.
Specifically:
- GCC High Direct Routing services must comply with government-specific regulations and certifications, such as FedRAMP High, DoD SRG IL5, and CJIS.
- GCC High keeps all data within US boundaries.
- Service availability and update cadences may be vary based on each GCC High tenant’s infrastructure and security assessments.
Only organisations validated by Microsoft can establish a GCC High environment.

Direct Routing is the only way to enable Teams Calling for GCC High.
With no native Microsoft option, choosing the right Direct Routing partner is key.
Deploy Microsoft Teams Phone for GCC High up to 10x faster with automation
Enhance Your GCC High Environment With HelloTeams
Implement Teams Phone Faster and More Affordably
HelloTeams uses built-in automation to deploy Teams Phone for GCC High up to 10X faster and 6X cheaper than other providers.

Eliminate Manual Deployment Risks and Human Error
Automated deployment means that human error risks to both implementation and security are eliminated.

Reduce OpEx Through Automation
HelloTeams’ automated functions reduce IT workload, lowering operational expenditure. So, you can do other important work.

Stay Connected With Continuous Support
24/7 priority support across more than 19 countries keeps you connected when you need it most, with an average uptime of 99.99%. Even if your partners operate internationally, GCC High ensures your Teams voice traffic stays within U.S. borders for compliance.

Operate With Defence-Grade Security
Microsoft Teams keeps your data safe with enterprise-grade security protocols. HelloTeams also uses AI-driven error detection to maximise performance.


Audioconferencing
Hold Audioconferences More Securely
Secure access to meetings shouldn’t be limited by internet connectivity.
With HelloTeams, you can set up Direct-Routed audioconferencing, enabling secure Teams calls by dialling in from mobile or landline phones. Employees can also join meetings seamlessly from VoIP endpoints, ensuring flexibility without sacrificing compliance.
The HelloTeams Advantage with GCC High
15-Minute Automated Deployment
Get up and running in 15 minutes—no coding or IT expertise required.
Seamless Integration & Migration
Easily port domestic or international numbers and connect Teams Phone via Direct Routing or Operator Connect.
Cost-Effective & Transparent Pricing
No setup fees, fully customizable plans, and a 14-day free trial—risk-free. Simple Teams Phone calling plans—domestic & international.
Enterprise-Grade Security & Reliability
Enjoy 99.99% uptime, global data centers, and built-in redundancy.
World-Class Support
24/7 expert support with personal onboarding and dedicated account managers.
Clear calls. Flexible plans. Better value.
See why customers across 35+ regions choose HelloTeams
FAQs
Questions About GCC High
With HelloTeams, the customer provides the GCC High Tenant and the required Teams Phone Standard licencing and HelloTeams provides the rest via our unique automation service. All elements of the Direct Routing service are configured automatically, including Session Border Controllers, Teams Direct Routing setup, voice policies, dial plans etc. Upon service deployment customers then have immediate access to TCAP for full service management.
HelloTeams work diligently with Microsoft to ensure requirements around data sovereignty compliance for GCC High are strictly adhered to. This includes FedRAMP (Federal Risk and Authorization Management Program) High, DoD IL4 (Department of Defense Impact Level 4), and other relevant regulations. Other internal processes are implemented to further ensure and enhance compliance, including but not limited to
Threat Detection and Prevention: Implement intrusion detection and prevention systems (IDPS) to monitor and protect against security threats. Regularly update threat signatures and maintain up-to-date threat intelligence.
Logging and Auditing: Enable comprehensive logging and auditing for all Direct Routing components. Regularly review and analyze logs to detect suspicious activities and potential security incidents.
Incident Response Plan: Develop and document an incident response plan specific to the GCC High environment. This plan should outline the steps to take in case of a security breach and how to notify appropriate authorities.
Vendor and Patch Management: Keep all Direct Routing components up to date with the latest security patches and updates. Establish a patch management process to ensure timely application of security fixes.
Regular Security Assessments: Conduct regular security assessments, vulnerability scans, and penetration testing to identify and address security weaknesses.
Security Awareness Training: Ensure that your staff is well-trained in security best practices, especially those specific to the GCC High environment. User awareness and education play a crucial role in preventing security incidents.
HelloTeams implements secure configuration settings for all components involved in Direct Routing, including Session Border Controllers (SBCs), network infrastructure, and Microsoft 365 services. This includes configuring firewalls, access controls, and encryption protocols to meet security standards. All infrastructure, including SBC’s and automation servers reside within the United States and all data in transit is encrypted as TLS (Transport Layer Security) for signalling and SRTP (Secure Real-time Transport Protocol) for media traffic and segregated specifically for the Microsoft Teams GCC High endpoints residing solely within the United States. Redundant SBCs ensure uninterrupted Teams voice service, even during failover.
A High Availability Architecture is implemented for Direct Routing. This involves redundancy at various levels, including network, Session Border Controllers (SBCs), and voice services. Redundant, load balanced SBCs are deployed in geo-redundant locations within the United States to ensure continuous voice service in case of hardware or software failures.
Network redundancy is maintained with multiple connections and data centers to ensure connectivity and minimize the impact of network failures with, proven failover procedures and policies to ensure that redundancy mechanisms work as expected. Failover is automated to reduce response times during failures with robust monitoring and alerting systems to proactively detect and respond to issues.
Secure Teams Phone for US Government Compliance
Start here. Our experts will help you deploy Teams Phone for GCC High quickly and compliantly.
