'Summary Period' ISDN Primary Rate Interface Statistics

The following statistics are collected for the ISDN Primary Rate Interface object.


Parameter

Type of statistic

Description
PRI status: Channels currently configured Gauge The number of B-channels configured on this ISDN PRI. This does not include DS0s used as D-channels. A channel is counted as configured if the ISDN PRI is active and its parent DS1 is enabled.
PRI status: Channels currently configured - low water mark Low The lowest number of B-channels configured on this ISDN PRI at any time during the summary period.
PRI status: Channels currently configured - high water mark High The highest number of B-channels configured on this ISDN PRI at any time during the summary period.
PRI status: Channels currently available Gauge The number of B-channels available for use on this ISDN PRI. This includes channels that are currently in use for calls.
PRI status: Channels currently available - low water mark Low The lowest number of B-channels available for use on this ISDN PRI at any time during the summary period.
PRI status: Channels currently available - high water mark High The highest number of B-channels available for use on this ISDN PRI at any time during the summary period.
PRI status: Channels currently in use for calls Gauge The total number of B-channels in use for calls on this ISDN PRI.
PRI status: Channels currently in use for calls - low water mark Low The lowest number of B-channels in use for calls on this ISDN PRI at any time during the summary period.
PRI status: Channels currently in use for calls - high water mark High The highest number of B-channels in use for calls on this ISDN PRI at any time during the summary period.
PRI status: Channels currently in use for calls to MetaSwitch Gauge The number of B-channels in use for calls to MetaSwitch on this ISDN PRI. For an access PRI, this is the count of channels in use by calls made by ISDN subscribers; for a trunk PRI, this is the count of channels in use by calls coming in to the MetaSwitch NE over this PRI.
PRI status: Channels currently in use for calls to MetaSwitch - low water mark Low The lowest number of B-channels in use for calls to MetaSwitch on this ISDN PRI at any time during the summary period.
PRI status: Channels currently in use for calls to MetaSwitch - high water mark High The highest number of B-channels in use for calls to MetaSwitch on this ISDN PRI at any time during the summary period.
PRI status: Channels currently in use for calls from MetaSwitch Gauge The number of B-channels in use for calls from MetaSwitch on this ISDN PRI. For an access PRI, this is the count of channels in use by calls from the MetaSwitch NE to ISDN subscribers on the switch; for a trunk PRI, this is the count of channels in use by calls going out from the MetaSwitch NE over this PRI.
PRI status: Channels currently in use for calls from MetaSwitch - low water mark Low The lowest number of B-channels in use for calls from MetaSwitch on this ISDN PRI at any time during the summary period.
PRI status: Channels currently in use for calls from MetaSwitch - high water mark High The highest number of B-channels in use for calls from MetaSwitch on this ISDN PRI at any time during the summary period.
PRI status: Percentage utilization Percentage Average channel utilization during the summary period. This represents the number of B-channels in use as a percentage of the number of B-channels available.
PRI status: Percentage utilization - low water mark Low Minimum percentage channel utilization during the summary period.
PRI status: Percentage utilization - high water mark High Maximum percentage channel utilization during the summary period.
PRI status: Channels currently deactivated or in use by maintenance Gauge The number of B-channels deactivated (when the parent DS1 is not active) or in use by maintenance on this ISDN PRI.
PRI status: Channels currently deactivated or in use by maintenance - low water mark Low The lowest number of B-channels deactivated or in use by maintenance on this ISDN PRI at any time during the summary period.
PRI status: Channels currently deactivated or in use by maintenance - high water mark High The highest number of B-channels deactivated or in use by maintenance on this ISDN PRI at any time during the summary period.
PRI status: Channels currently failed Gauge The number of failed B-channels on this ISDN PRI.
PRI status: Channels currently failed - low water mark Low The lowest number of failed B-channels on this ISDN PRI at any time during the summary period.
PRI status: Channels currently failed - high water mark High The highest number of failed B-channels on this ISDN PRI at any time during the summary period.
Traffic information: Calls - Total call usage Usage Total call usage on this interface, in CCS (Centa Call Seconds). 1 CCS = 100 seconds of total call time.
Traffic information: Calls - Incoming call usage Usage Call usage for incoming calls on this interface (calls made by ISDN subscribers), in CCS (Centa Call Seconds). 1 CCS = 100 seconds of total call time.
Traffic information: Calls - Outgoing call usage Usage Call usage for outgoing calls on this interface, in CCS (Centa Call Seconds). 1 CCS = 100 seconds of total call time.
Traffic information: Incoming calls - Call attempts Counter Total number of incoming call attempts over this interface. For an access PRI, this is the count of calls made by ISDN subscribers; for a trunk PRI, this is the count of calls coming in to the MetaSwitch NE over this PRI.
Traffic information: Incoming calls - Successful call attempts Counter Number of incoming call attempts over this interface for which the call was connected successfully.
Traffic information: Incoming calls - Unconnected calls (normal reasons) Counter Number of incoming call attempts over this interface for which the call could not be connected for one of the following reasons.
  • Called party busy
  • No answer
  • Caller abandon
  • Called party reject
  • Core network failure (independent of the ISDN interface)
Traffic information: Incoming calls - Unconnected calls (congestion) Counter Number of incoming call attempts over this interface for which the call could not be connected because there were no available B-channels.
Traffic information: Incoming calls - Unconnected calls (failures) Counter Number of incoming call attempts over this interface for which the call could not be connected for which the call could not be connected for one of the following reasons.
  • ISDN protocol errors
  • Unexpected ISDN timer expiry
  • Media failure
  • Other abnormal failure conditions
Traffic information: Outgoing calls - Call attempts Counter Total number of outgoing call attempts over this interface. For an access PRI, this is the count of calls from the MetaSwitch NE to ISDN subscribers on the switch; for a trunk PRI, this is the count of calls going out from the MetaSwitch NE over this PRI.
Traffic information: Outgoing calls - Successful call attempts Counter Number of outgoing call attempts over this interface for which the call was connected successfully.
Traffic information: Outgoing calls - Unconnected calls (normal reasons) Counter Number of outgoing call attempts over this interface for which the call could not be connected for one of the following reasons.
  • Called party busy
  • No answer
  • Caller abandon
  • Called party reject
Traffic information: Outgoing calls - Unconnected calls (congestion) Counter Number of outgoing call attempts over this interface for which the call could not be connected because there were no available B-channels.
Traffic information: Outgoing calls - Unconnected calls (failures) Counter Number of outgoing call attempts over this interface for which the call could not be connected for one of the following reasons.
  • ISDN protocol errors
  • Dual seizure
  • Unexpected ISDN timer expiry
  • Media failure
  • Other abnormal failure conditions
Other: ISDN layer 2 signaling failures - Primary D-channel Counter Number of ISDN layer 2 signaling failures on the primary D-channel for this interface.
Other: ISDN layer 2 signaling failures - Secondary D-channel Counter Number of ISDN layer 2 signaling failures on the secondary D-channel for this interface. This field is valid only if the ISDN Primary Rate Interface is using D-channel backup.
Other: ISDN layer 2 signaling failures - Calls released Counter Number of calls that were released because of an ISDN layer 2 signaling failure on this interface.
Other: Protocol errors - Associated with calls Counter Number of protocol errors in messages associated with specific calls on this interface.
Other: Protocol errors - Not associated with calls Counter Number of protocol errors in messages associated with the interface as a whole, rather than with specific calls on this interface.
Other: Two B-Channel Transfers - Successful requests Counter This field applies only for an Access PRI and not for a Trunk PRI. Number of times a Two B-Channel Transfer Request was processed successfully on this interface.
Other: Two B-Channel Transfers - Failed requests Counter This field applies only for an Access PRI and not for a Trunk PRI. Number of times a Two B-Channel Transfer Request failed on this interface.
Other: Two B-Channel Transfers - Currently active Gauge This field applies only for an Access PRI and not for a Trunk PRI. The number of active TBCT calls (calls that had been transferred off this PRI using TBCT but had not yet completed).
Other: Two B-Channel Transfers - Currently active - low water mark Low This field applies only for an Access PRI and not for a Trunk PRI. Minimum number of active TBCT calls.
Other: Two B-Channel Transfers - Currently active - high water mark High This field applies only for an Access PRI and not for a Trunk PRI. Maximum number of active TBCT calls.