One of the challenges I have seen is to be cost effective in a small business environment and give absolutely the most features that they can use . A small business can utilize SIP trunks and be very cost effective ! Cabling and other hardware costs can be a burden but then again 1 cable can handle a phone and a Computer today in some cases . All the while looking at monthly figures as well ! Down to about 2.4 Cents per minute on calls !