Kron Network and Service Quality Assurance consists of two basic components, the Central Management System and Kron IAP probes. Kron IAP probes can be deployed in the different points across the whole network including core and CPE locations according to the planned measurements. Kron Network and Service Quality Assurance can be implemented based on TWAMP (Two-Way Active Measurement Protocol) that is a key to measure end to end network performance with various endpoint devices.