| OID | Object | Syntax | Max Access | Description | Implemented Specifications | 
|---|---|---|---|---|---|
| 1.3.6.1.4.1.2011.5.25.187.1.27 | hwPtpGrandMasterClockTimeSource | INTEGER{atomicclock(1),gps(2),terrestrialradio(3),ptp(4),ntp(5),handset(6),other(7),internaloscillator(8)} | read-only | PTP GrandMaster clock timesource attribute. | This object is implemented as defined in the corresponding MIB files. |