ADTRAN-AOS-VQM Table View

The adVqmInterface table provides aggregate statistics for each
system interface.  VQM processes RTP stream packets as received by
the interface (inbound direction).  The user can enable or disable
each system interface for VQM using the CLI/GUI.  The VQM interface
table objects include enable/disable, packet statistics for number
received, lost, out-of-order, discarded, number of active and
completed calls, MOS scores, delay measurements, and quality
analysis counts.

The adVqmEndPoint table provides aggregate statistics for each
VoIP end-point device.  The RTP Source IP address,
adVqmEndPointRtpSourceIp, provides a unique table index.
The VQM End-point table provides summary statistics for MOS scores,
packets lost, out-of-order, jitter, delay and quality analysis
counts.

The adVqmCallHistory table provides detail voice quality statistics
on completed RTP voice streams.  A voice call will typically have
two entries in this table one for each RTP stream.  A combination
of Source IP Address and Port, Destination IP Address and Port,
and SSRC (synchronization source ID) are necessary to uniquely
identify the call session.
One management option is to configure VQM to only save call history
information for poor quality calls that exceed threshold limits.
Threshold limit settings are available for MOS scores and packet
statistics for loss, out-of-order, and jitter.  Setting the maximum
call history buffer size to a lower value (default is 100 streams)
can reduce the amount of data transfer to the NMS during a
SNMP query.

The adVqmActiveCall table provides detail voice quality
statistics on currently active RTP voice streams.  A voice call
will have two entries in this table one for each active RTP
stream.  A combination of Source IP Address and Port,
Destination IP Address and Port, and SSRC
(synchronization source ID) are necessary to uniquely identify
the call session.
The VQM Active Call table shares the same type of information
as found in the Call History table.  The VQM Manager transfers
the active call statistics into the call history table database
when the call completes.