The HLXS is a self-contained sub-system that manages all aspects of HDSL transmission, allowing HDSL transport capability to be integrated into any T1-compatible telecommunications product, from digital loop carrier systems to channel boxes to T1 test equipment. All that’s required is a 1.544 Mbps payload signal interface from the host system with clock and an optional frame pulse. The HLXS connects to the host system via a single 32-pin connector. Host activation is not required; the HLXS condu