VOIP divider system

Hello Guys, I need someone who can provide a software that will split a VOIP line into several outcome calls, the purpose of this similar to this scenario. I will have people calling a certain number (always the same) and then from there my current system re-directs them to another number that they have stored on a system previously. At the time my VOIP provider allows me only to have two persons calling on different lines at the same time under the same phone number, and that is why I need this software to split the line in as many as its possible with out loosing much the quality of the call. I need someone who will be available on IM constant and how has previous experience on this type of systems. Only serious bidders will be considered! Thanks!