Samsung Prostar is a discontinued model, but still a big seller in the used and reconditioned phone marketplace. These phones are often referred to as hybrids, which means that they use both conventional switch technology and digital integration with your PC, PDA, and other digital devices. These phones are a great in-between step for growing businesses for which big, network-driven phone systems aren’t practical, yet wants to keep up with the exciting new changes in technology.
A SIP (Session Initiation Protocol) trunk is a service that allows businesses with an installed PBX to use real-time communications including VoIP. By connecting a SIP trunk to an internal traditional PSTN (public switched telephone network) phone system, companies can communicate over IP outside the enterprise. In addition, companies can replace traditional fixed PSTN lines with an IP phone system connected externally through an SIP-trunking service, thereby creating a single conduit for multimedia components including voice, video and data.
It starts with the eye
Any surveillance system starts with the cameras, which must have adequate resolution for human operators or analytical software to pick out vital information, such as license plate numbers. They must also be able to capture the entire scene you want to monitor, either by moving around or by having a stationary wide-angle — and typically high-resolution — view.
Video surveillance has been around since law enforcement agencies started using closed-circuit TV cameras in the early 1960s. Today, the basic principle might be the same, but what goes on behind the camera is a far cry from a security guard watching a monitor.