Verilink Red Zone Encryption (REMS) (880-502423-001) Product Manual - Manual (Page 17)

Diagnostics and performance monitoring
Red Zone Encryption Management System (REMS) User Manual 1-7
register alarm threshold is set to 45. An accumulation of 45 error seconds
within a 15-minute time interval at the far end causes the local FBR to
initiate an alarm to AM2000.
Registers
database Data is logged in six AM2000 database registers. Register processing
criteria are described in T1M1.3/92-005R3. Data storage is described in
T1M1.3/92-005R3, 9.2.1.2 (DS1 Performance Data Storage). FBR
registers can be reset independently or globally from the FBR ASCII
Craft interface or the AM2000.