Summary

Recommendation ITU-T G.8272/Y.1367 specifies the requirements for primary reference time clocks (PRTCs) suitable for time, phase and frequency synchronization in packet networks. It defines the error allowed at the time output of the PRTC.

These requirements apply under the normal environmental conditions specified for the equipment.

Amendment 1 provides the following updates:

–           Modifies the scope.

–           In clause 6, amends the final sentence to read (insertions highlighted)

–           In clause 6.2, adds new sentence.

–           Replaces the second paragraph after Figure I.4.