What phone systems do you use for your business?
sgoraya: We have been using Ringcentral with a total head count of 6 people.  It was a breeze to setup (web interface) and you can route calls and extensions to different numbers, etc.  I've suggested their service to my friends.Pros:  Easy setup: allocate extensions, routing, voice mail boxes, etc.  Cost effective, in other words, cheap!Cons:  None that have caught my attention so far.  We needed something quick that would work and give us a more professional identity when we received calls and this has worked for us.