The Cisco ONS 15454 Timing, Communication, and Control Plus (TCC+) card is the memory-enhanced version of the first-generation TCC card providing the Cisco ONS 15454 solution with overall control of the system. A TCC+ card performs system initialization, provisioning, alarm reporting, maintenance, diagnostics, IP address detection/resolution, SONET DCC termination, and system fault detection. The TCC+ card incorporates system timing source selection and a highly stable, stratum 3, and internal timing reference. Nonvolatile database storage for communication, provisioning, and system control is provided on the TCC+ card, allowing complete removal of system power with full database recovery and survivability.