Voip has taken a big flight in recent past specially in the area of voip solutions for business. Biggest advantage that voip based software solutions provides is that they are only limited by technology and monetary cost. Several solutions have emerged over the years ranging from voip PBX systems to automated call management in call centres.
The complexity of these solutions is enourmous and it is amazing what these business solutions can do for a company. Say for example, a small company can run a complete voip solution with independent phone numbers for each employees and no receptionist. Larger companies can go a step further by using gateways to develop a complete comunication network where every employee can be connected with office while keeping the expenses down.
The usual names in business voip software and solutions this time around are not Windows based but more of open source group. Leading solution providers is astrisk, it has been a relaible voip software provider for quite some time and being Linux/Unix based is also very dependable. Microsoft and others are also in this industry but have litle success. Remember having to buy a comunications server and then licenses for each employee as if we are not paying enough everyday to Microsoft.
There are some other business solutions providers such as Cisco and 3CX that have also taken a considerable market share and kept it out of reach of others in this business.