Wavetek ANT-20 Operating Manual page 101

ANT-20/ANT-20E
Multiplexer results for permanent virtual connections (PVC)
Display
Numerical display
Software indicators
Table TB-1
Multiplexer results for switched virtual connections (SVCs)
It is not possible to make a precise prediction of the generated traffic profiles for switched virtual
connections (SVC) because the traffic mix that occurs may vary in time. This depends, among
other things on the order in which the connections are switched in the ATM network. The
preview therefore includes the following information:
Display
Numerical display
Table TB-2
Tip: After the start of a measurement, the multiplexer field contains the same information as
Technical Background
Meaning
A ... D Test channel name
DC: ... "Dropped Cell Count" display: Percentage of dropped cells referred to the
mean cell rate of the channel. Dropped cells occur if the bandwidth set for a
channel cannot be reached. This happens if the overall bandwidth is
exceeded or if the traffic contract forces it (with traffic shaper switched on).
The yellow indicator means DC > 0%.
NCC: ... % "Non Conforming Cells" display: Percentage of cells that do not conform to
the traffic contract referred to the mean cell rate of the channel. The yellow
indicator means NCC > 0%.
Combined values Display of the total generated bit rate in Mbit/s. This includes the bandwidth
BW: ... % reserved for the auxiliary channels (e.g. signaling channels). The yellow
indicator means that the multiplexer is dropping cells.
The indicators give a rapid overview of any anomalies in the generated traffic mix.
Green means No anomalies were detected
Yellow means Anomalies were detected
Multiplexer results with PVCs
Meaning
A ... D Test channel name.
... Mbps Average cell rate in Mbit/s.
Combined values
UBW: ... Mbps Display of overall generated bit rate in Mbit/s.
SBW: ... Mbps Display of bandwidth reserved for auxiliary channels (signaling channel) in
Mbit/s
Multiplexer results for switched virtual connections (SVCs)
for permanent virtual connections.
Broadband Analyzer/Generator
TB-7