Description: This table contains the U-interface Performance Monitoring Thresholds and Alarms for each of the subscriber loops in the system and for any BRITE cards extending those loops (e.g. using Subscriber Loop Carrier systems) The table is indexed first using the Cisco 90 Series channel bank digroup number, then the channel unit number (1 to 24), then the port number (0, 1, etc) and finally the location number (the BRITE card number (1 to 6) or 7 for local parameters in the Cisco 90 Series card). These registers are defined by Bellcore TR-TSY-000829.