An SROS router obtains its timing exclusively from its BITS input port. The router sets Quality Level (QL) SONET Traceability Unknown (STU) on this Superframe (SF) framed DS1 BITS reference.
What must you configure on this master router to pass the best clock quality level to the downstream Synchronous Ethernet (SyncE) slave nodes while maintaining traceability to the DS1 source?
- Enable "ql-override prs" on the BITS reference
- Enable "ql-override prs" on the master's SyncE ports
- Enable "ql-selection prs" on the BITS reference
- Set the master router to choose its source by quality level