Embodiments of the invention provide systems and methods for providing services such as provided by Internet Protocol (IP) Multimedia Subsystem (IMS) with an IP network that is not the IMS. According to one embodiment, a system for providing communication services can comprise a communication network, one or more subsystems communicatively coupled with the network and adapted to provide one or more telco functions, and one or more applications communicatively coupled with the network and adapted to utilize the telco functions.