Application service provider (ASP) featuring software for use in the Telecommunications Industry to support multi-functional billing, least cost routing and provisioning of blended traffic specific to customers and providers, and to support provisioning of real-time billing for customers and providers of wholesale and retail telecommunications, and for supporting a VoIP (Voice Over Internet Protocol) telecommunications switching platform/infrastructure which handles all the capabilities which are needed to support both wholesale and retail communications firms, and for providing rate management, billing, financial reports, engineering reports, intelligent routing algorithms and a monitoring system via the Web; Providing on-line non-downloadable software for the Telecommunications Industry to support multi-functional billing, least cost routing and provisioning of blended traffic specific to customers and providers, and to support provisioning of real-time billing for customers and providers of wholesale and retail telecommunications, and for supporting a VoIP (Voice Over Internet Protocol) telecommunications switching platform/infrastructure which handles all the capabilities which are needed to support both wholesale and retail communications firms, and for providing rate management, billing, financial reports, engineering reports, intelligent routing algorithms and a monitoring system via the Web; Providing temporary use of on-line non-downloadable software for the Telecommunications Industry to support multi-functional billing, least cost routing and provisioning of blended traffic specific to customers and providers, and to support provisioning of real-time billing for customers and providers of wholesale and retail telecommunications, and for supporting a VoIP (Voice Over Internet Protocol) telecommunications switching platform/infrastructure which handles all the capabilities which are needed to support both wholesale and retail communications firms, and for providing rate management, billing, financial reports, engineering reports, intelligent routing algorithms and a monitoring system via the Web; Software as a service (SAAS) services, namely, hosting software for use by others for use in the Telecommunications Industry to support multi-functional billing, least cost routing and provisioning of blended traffic specific to customers and providers, and to support provisioning of real-time billing for customers and providers of wholesale and retail telecommunications, and for supporting a VoIP (Voice Over Internet Protocol) telecommunications switching platform/infrastructure which handles all the capabilities which are needed to support both wholesale and retail communications firms, and for providing rate management, billing, financial reports, engineering reports, intelligent routing algorithms and a monitoring system via the Web