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
conducts a complete self-test upon power-up and automatically synchronizes within 30 seconds to the
HDSL equipment at the opposite end....