Viewing Voice Compression Module Statistics - 3Com SuperStack II PathBuilder S330 Reference Manual

Viewing Performance and ATM Statistics 203
Total CRC Errors — The number of cells received with uncorrectable sequence
number CRC error.
Total OAM Cells Received — The number of OAM (Operations, Administration,
and Maintenance) cells received over the virtual circuit; these cells carry OAM
information used for network management.
Total OAM Cells Transmitted — The number of Operations Administration and
Maintenance (OAM) cells transmitted over the virtual circuit.
Current Cell Status — The cell loss status: no loss (1) or loss (2). The Current Cell
Status is set to loss when cells are lost for the number of milliseconds specified by
the Cell Loss Integration Period defined for the CBR virtual circuit. You define the
CLIP when you create the VC.
Data Bytes To (structured data ports only) — The data bytes to the cell bus. Use
this value to set the DBA Bits Mask CBR port parameter. In most cases, the default
DBA Bits Mask (127) is appropriate. If you are experiencing problems with a CCS
circuit, however, you can set the DBA Bits Mask to monitor different bits. Check
the Data Bytes To value, and set the DBA Bits Mask to that value.
When you check the data bytes, you must first make sure that the circuit is in an
idle state (phone onhook). If you cannot access the equipment to see whether or
not the circuit is in idle, then check the data bytes for at least 30 seconds (about
seven updates). If the Data Bytes To value remains the same for 30 seconds or
more, it is safe to assume that the circuit is in an idle state.
Viewing Voice You can view performance monitoring, virtual circuit, and port activity statistics for
Compression Module the Voice Compression module.
Statistics
To view VCM statistics:
1 From the Card Statistics menu, shown earlier in Figure 161, enter the number
corresponding to the slot in which the VCM for which you want to view statistics
is installed ( or ) to open the VCM Card Statistics menu, shown in Figure 164.
7 8
Figure 164 VCM Card Statistics Menu