Tempo's 1137-5002 Sidekick T&N is a versatile test set that identifies frequently missed faults as well as tests and qualifies the transmission quality of POTS lines. The Sidekick T&N improves customer satisfaction by reducing repeat service calls and eliminating service interruptions. The test set works on any twisted pair application. The 1137-5002 features a lightweight, rugged design combined with five new test functions that provide quality loop testing for POTS lines.