The real advantage of a server based system is it has the ability to do VOP. This is great if you are a company with multiple sites or a lot of telecommuters. However, if your a business with a single site location, as most are, it is not a good solution for you. Not only is it extremely more expensive, but most are very high maintenance and require constant upgrades, not to mention the fact that if you are unable to support it in house 100%, your choices of vendors a very limited. It truely amazes me that companies like Cisco think a technology that has been around 100 years, been tweaked, advanced, and had improvements all around, and been subject to countless trial and error, could suddenly be replaced by a system that hasn't even been field tested properly. One day we will probably see a move to a fully intergrated voice and data system, but that day is far off. Anyone thinking about using such a setup today would be better served if they let the other guys get the bugs out of the system first.
