---
oid: "1.3.6.1.4.1.2879.2.1.3.1.5.1.3"
asn1-notation: "{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) 2879 sonusMgmt(2) sonusSystemMIBs(1) sonusSystemTimingMIB(3) sonusSystemTimingMIBObjects(1) sonusStTimingSourceTable(5) sonusStTimingSourceEntry(1) sonusStTimingSource(3)}"
description: "sonusStTimingSource OBJECT-TYPE"
classification: "MIB object for network management"
last-modified: "2020-11-18"
---

## OID : `1.3.6.1.4.1.2879.2.1.3.1.5.1.3`

```asn1
{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) 2879 sonusMgmt(2) sonusSystemMIBs(1) sonusSystemTimingMIB(3) sonusSystemTimingMIBObjects(1) sonusStTimingSourceTable(5) sonusStTimingSourceEntry(1) sonusStTimingSource(3)}
```

### Description

```asn1
sonusStTimingSource OBJECT-TYPE
SYNTAX SonusTimingSource
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Indicates which physical timing source is bound to this node.

External BITS sources are used by MTA 10's, in T1 based chassis'.
External SETS sources are used by MTA 2X's, in E1 based chassis'.
REFCLK's are based upon timing recovered from a CNS or PNS Server card.
HOLDOVER mimics the last known good source before it failed.
OSCILLATOR is used when no other valid sources exist on the currently active
MTA."
DEFVAL { oscillator }
```

**Classification**: MIB object for network management

### Child OIDs

No child OID

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