ShawnTech's Managed Access System (MAS) systematically manages communications within correctional facilities to stop unauthorized devices while allowing authorized communications. The scalable system covers all common cellular protocols and frequencies used in the US in compliance with communications regulations. Network operations are monitored 24/7 through their network operations center to provide intelligence reports and ensure reliable system operations through preventative maintenance. The MAS uses a distributed antenna system and fiber infrastructure to systematically control communications across a facility based on designed coverage levels for different areas.