h partial timing support from the network." ITU-T Recommendation, Amendment 2, 2018. https://handle.itu.int/11.1002/1000/13768 "G.8272: Timing characteristics of primary reference time clocks." ITU-T Recommendation, Amendment 1, 2020. https://handle.itu.int/11.1002/1000/13769 "G.8272.1: Timing characteristics of enhanced primary reference time clocks." ITU-T Recommendation, Amendment 2, 2016. https://handle.itu.int/11.1002/1000/13325 "G.8273.2: Timing characteristics of telecom boundary clocks and telecom time slave clocks for use with full timing support network." ITU-T Recommendation, 2020. https://handle.itu.int/11.1002/1000/14213 "G.8273.3: Timing characteristics of telecom transparent clocks for use with full timing support from the net- work." ITU-T Recommendation, 2020. https://handle.itu.int/11.1002/1000/13770 "G.8273.4: Timing characteristics of telecom boundary clocks and telecom time slave clocks for use with par- tial timing support from the network." ITU-T Recommendation, 2020. https://handle.itu.int/11.1002/1000/14214 "G.8275: Architecture and requirements for packet-based time and phase distribution." ITU-T Recommenda- tion, 2020. https://handle.itu.int/11.1002/1000/14016 "G.8275.1: Precision time protocol telecom profile for phase/time synchronization with full timing support from the network." ITU-T Recommendation, 2020. https://handle.itu.int/11.1002/1000/14215 "G.8275.2: Precision time protocol telecom profile for time/phase synchronization with partial timing support from the network." ITU-T Recommendation, 2020. https://handle.itu.int/11.1002/1000/14216 Internet Engineering Task Force (IETF) Mills, D. "Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI." IETF, RFC 4330, 2006. https://tools.ietf.org/html/rfc4330 Mills, D., J. Martin, J. Burbank, and W. Kasch. "Network Time Protocol Version 4: Protocol and Algorithms Specification." IETF, RFC 5905, 2010. https://tools.ietf.org/html/rfc5905 Schulzrinne, H., S. Casner, R. Frederick, and V. Jacobson. "RTP: A Transport Protocol fo