ADC’s HDSL2/4 line cards provide visibility of faulty or missing remote chassis frame ground
connections on a real-time basis. A remote unit not connected to frame ground is susceptible to
poor performance and possible damage to HDSL and other transmission equipment. This has
become an increasingly critical factor in the delivery of T1 service to cell sites. Cell sites are
particularly vulnerable to power surges, induction and changes in ground potential caused by RF
transmission equipment and lightning strikes. By determining whether or not frame ground is
connected at the remote, the RFGD feature helps the customer to avoid potential problems....