Virtual Switching Consultancy Limited (VSC) is at the leading edge of the revolution in the telecom market.  For the past ten years, VSC has developed and delivered IP-based products that transform the telecom landscape.  VSC has provided solutions and guidance to TSOs ranging from Tier-1 and Tier-2 Carriers, External Telecommunications Services (ETS) Operations. International Service Resellers (ISR) to large organizations.