One of the greatest accomplishments in my opinion in VOIP technology is the ability to call from one telephone system to another . By being able to "tie" phone systems together by what the industry calls Seamless dialing to another location , It opens up a HUGE area so that small and medium companies can actually call another phone system by dialing 3 or 4 or 5 digits from their own desk or mobile telephone app . By tying 2 telephone systems together via trunking it allows a phone system user in Example : Fresno , Ca. to call someone on another system in Boston, Ma. , over the network !! So take a Restaurant or a Marine supplier or a Craft store for example with a good size Corp office and then multiple retail locations thru out the country . By supplying small business telephone systems to each small office or 1 Large Business and multiple small systems , You can contact a co worker direct right over your own network and for free !! The possibilities are endless in large Companies as they can give a local office a Low Budgeted telephone system then connect them all together via SIP technology ! Calling stores is made less expensive by using another office telephone system to make calls ! Using traditional telephone services you now have a failover in case of emergency too !! If you lose the internet / network , the local calls can still come in and go out via the local phone lines !! Add to this intelligent routing and you can use SIP trunks at the main office and local trunks for local calling and mixing sites for other offices using local lines too !! The possibilities for a few offices are huge and for large offices a LARGE amount of savings can be made via local and Long Distant calls being rerouted to other areas for lower rates as well ! We offer products in our inventory so that you can have small budgeted systems and GREAT VOIP quality and build a very successful voip network on a small budget !! Our services and brands get better each and every day as well so we can just about accommodate evry situation out in the marketplace today ! Check us out and see what we can do for you to save you the expense and aggravation of learning VOIP Systems , whether it be hosted or non hosted ( In the cloud or Buy your own equipment ) Type systems ! Call centers as well !!! SO give us a call and we can help you find the best fit for equipment telephones and any other voip gear needed to do a successful deployment !!