System Basics Introduction
Page 196 7210 SAS M, T, X, R6 Basic System Configuration Guide
multiple input synchronization trails. Synchronization Status messages have been defined 
for various transport protocols including SONET/SDH, T1/E1, and Synchronous Ethernet, 
for interaction with office clocks, such as BITS or SSUs and embedded network element 
clocks. on page 220
→ Adaptive Clock Recovery on page 225
• IEEE 1588v2 PTP on page 226
→ PTP Clock Synchronization on page 230
→ PTP Capabilities on page 234
→ PTP Ordinary Slave Clock For Frequency on page 235
→ PTP Ordinary Master Clock For Frequency on page 191
→ PTP Boundary Clock For Frequency on page 193
→ PTP Clock Redundancy on page 195