The core activity of SITIS Sàrl is to provide services and solutions in the fields of computer science, telecommunications and security. Specifically, this includes: Computer Science: IT support (on-site and remote), virus removal, data recovery (hdd recovery), laptop repairs (screen replacement), web hosting and server housing in Switzerland. Telecommunications: Replacing old telephone systems, cabling, Voice-over-IP, virtual or cloud-based PBX solutions. Security: Hybrid video surveillance (analog and IP cameras), burglary protection, fire detectors and fog security systems.