Assisted Full Timing Support with GNSS as primary and PTP and Synchronous Ethernet as backup sources

Use Assisted Full Timing Support (AFTS) to enhance timing resilience by prioritizing Global Navigation Satellite System (GNSS) and use G.8275.1 (PTP and Synchronous Ethernet) as a backup source. This profile protects against spoofing, jamming, or atmospheric issues, helping you avoid costly holdover. During normal operation, source time from the local primary reference time clock (PRTC) or grandmaster sourced by GNSS. On GNSS failure, AFTS automatically falls back to PTP and Synchronous Ethernet. This AFTS configuration maintains phase and frequency without extended holdover and uses the physical layer clock if PTP is unavailable.