The service allows you finding out who has called you, when the telephone line was busy, switched off or was outside the zone of coverage. By doing so, it ensures that an important call will not be missed.
Introduction
When shopping for the perfect PBX system, you are most likely considering IP PBX over bulky and expensive antique methods. However, the pricing schemes are both confusing and concerning, as you are unsure what you are looking at when trying to price different services out. Luckily enough, the biggest business telephone systems vendors use plans to determine prices, and these plans can be easily compared to competitors.