The Soneplex Remote Test Access Unit (RTAU) module provides a full complement of DS1 test capabilities to the Soneplex Broadband platform. Test capability can now be deployed directly in the loop electronics, at a cost well below methods typically deployed such as test heads or portable test equipment. The Soneplex RTAU allows operators to test from multiple points in the network, both remote and local, supporting intrusive testing, remote loopback control, test signal generation and insertion,