hh3cNTPSysRefid
1.3.6.1.4.1.25506.8.22.1.1.6
Reference Clock Identifier : This is a 32-bit code
identifying the particular reference clock. In the
case of stratum 0 (unspecified) or stratum 1 (primary
reference source), this is a four-octet, left-justified,
zero-padded ASCII string.
Stratum, Code, Meaning
0, DCN, DCN routing protocol
0, TSP, TSP time protocol
1, ATOM, Atomic clock (calibrated)
1, WWVB, WWVB LF (band 5) radio
1, GOES, GOES UHF (band 9) satellite
1, WWV, WWV HF (band 7) radio