Microsoft 365 GCC High (MSFT 365 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).

Organizations leveraging MSFT 365 GCCH environments can add voice and audio conferencing to their systems with Microsoft Teams Direct Routing from CallTower.  

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.