The Si5518G meets all the requirements specified by ITU-T G.8262 EEC Options 1 & 2 and ITU-T G.8262.1. When used with external IEEE 1588 stack and servo loop software the Si5518G meets the requirements of ITU-T G.8273.2 (T-TSC, T-BC), ITU-T G.8273.4 (T-BC-P, T-BC-A, T-TSC-P, T-TSC-A) and G.8273.1 (T-GM). Si5518G supports Skyworks AccuTime™ IEEE 1588 software(opens in a new tab) and is currently for special use only, contact Skyworks for additional information.