The PRISM product family supports legacy TDM applications at transmission rates ranging from 56/64kbps through T1/E1. Products in this family include a NEBs compliant 1024 shelf system, 1051 shelf, 3030/3060 intelligent channel bank, 2000 & 2100 CSUs and 3111/3112 CSU/DSUs. These devices provide physical layer performance monitoring and diagnostic functions. Management of the PRISM product family ranges from SNMP through simple DIP switches. PRISM products are produced to carrier-grade standards of quality and are typically found deployed in the mission-critical applications used by wireline and wireless carriers, banks, utilities, government and other corporate enterprises.