Measurement Reference Guide Measurements vSTP Measurements vSTP M3UA Usage measurements VstpTxDUNA 3.97.24.18 VstpTxDUNA Measurement ID 21017 Measurement Group vSTP M3UA Usages Measurement Type Simple Measurement Dimension Single Description The number of DUNA messages sent by the vSTP server. Collection Interval 30 min Peg Condition Each time a DUNA message is sent. Measurement Scope NE, Server Recovery No action required.