OnSSI makes an appealing but questionable claim that they deliver "PSIM at a VMS price" in a Security Squared December 2009 survey article. This raises two interesting questions: (1) Does OnSSI offer a PSIM? and (2) could they offer it at a VMS price?
OnSSI does not have a PSIM as generally defined and accepted. PSIMs need to have broad 3rd party access control, video surveillance and intrusion detection support. This is critical because to aggregate and correlate information across systems requires interfacing with those systems. With the fragmented nature of the security market, this is no small task. OnSSI is only beginning to integrate with these systems and has a massive amount of integrations to 'catch up'. Secondly, while Ocularis provides alarm management, this is more similar to what other VMS systems provide (like Genetec Security Center) than the sophisticated real-time and investigative workflow that Orsus, Proximex, etc. provide.