The flexibility of using the phone system. The fact that you can control the system from anywhere. The system is very customizable, you can easily adjust the system to your needs. The fact that you can not access certain features in the system (like the voicemail system) when you are in the office. You must be in the office to access the voicemail system. I like the fact that I can access the system from anywhere. I also like the flexibility of using the system. I can easily access the system from anywhere, and I can use the system in different ways.