The BTS monitoring systems for alarm notification are integrated with the base fire alarm and other life safety systems, including the mass notification system (MNS). Most Base infrastructures include a remote switch at the Base Fire Station to facilitate an even higher reliability of telephone operations, such as E911 where VoIP is installed. Additionally, O-Tech's experience with other Fire Alarm and Mass Notification Systems design and installation efforts outside of our BTS support contracts provides O-Tech with more extensive qualifications that we apply to our BTS effors in operating and maintaining highly reliable life safety systems for such critical infrastructures as Air Force and Naval Bases.