aruba.markus,
Any planning tool is only as good as the information that you can feed into it. Most people have just a floor plan and not information about obstacles and their exact density, so those normally do not get entered into a tool. There are many things that are also unseen that affect RF that VisualRF will never have knowledge about.
The RF Planning tool should not be used to automatically obtain where to place access points, but as a starting point to survey.
If you are going to be spending alot of money purchasing, running cable to and mounting access points, a survey is needed to fully understand the effect off the RF. If you deploy solely based on VisualRF, it could be costly due to the fact that you cannot enter every single factor that will have an effect on your wifi deployment. You could end up with too much or too little coverage and both can be costly to fix later.
VisualRF gives you a starting point for your suvey. In terms of a hospitality deployment, many times where you can mount access points is limited, so that might dictate your access point numbers and placement more than an RF planning tool would.
- Use VisualRF to get an idea where you would place access points
- Do a physical survey to determine if the model in VisualRF is useful
- Make changes as needed.
If after the survey you find that the suggested placement by VisualRF is good, you can than trust VisualRF to model a similar environment.