The Cisco TCC2P card provides a next-generation system processor for the Cisco ONS 15454 MSPP. The Cisco TCC2P card performs system initialization, provisioning, alarm reporting, maintenance, diagnostics, IP address detection and resolution, SONET and SDH data communications channel (DCC) termination, system DC input-voltage monitoring, and system fault detection. The card resides in slots 7 and 11 of the shelf assembly, providing 1: 1 equipment protection.The Cisco TCC2P card incorporates a highly stable Stratum 3 internal timing reference to provide system timing based on input received from an external Building Integrated Timing Supply source or from an incoming SONET or SDH optical signal. Synchronous status messaging helps the system to select the best timing sources, and a holdover mode maintains timing accuracy in the event that preprovisioned synchronization references are not available.This is a SONET platform version.