ISUP Circuit Group

Each ISUP Circuit Group object is a child of an ISUP Remote Signaling Destination object.

This object contains configuration parameters and status information for an ISUP circuit group. A circuit group is one or a group of circuits on a DS1. Typically a circuit group is defined for each DS1. Note that a circuit group cannot include circuits from more than one DS1.

A circuit group is defined by the local exchange, the TDM port, the base timeslot and the number of circuits. Alternatively, the circuit group can be uniquely identified by the local and remote exchanges, the base CIC and the number of circuits.

For initial configuration of an ISUP Circuit Group, you need to do the following:

Object-Specific Actions
Validate Circuits To run a Circuit Validation Test on the circuits in this ISUP Circuit Group, click on the Validate Circuits pushbutton. A Circuit Validation Test checks that the circuit is provisioned at the remote destination, and performs basic checking that the configuration at the two ends is consistent. You are recommended to run this test after commissioning a new Circuit Group, or after a change in the Circuit Group's configuration in the EMS or at the remote system.
Query Group To run a Circuit Group Query for this ISUP Circuit Group, click on the Query Group pushbutton. The NE also initiates an automatic Circuit Group Query on each circuit group once a day.
Test Continuity To run a Continuity Test for the circuits in this ISUP Circuit Group, click on the Test Continuity pushbutton. The number of simultaneous tests across all circuit groups to a specific remote signaling destinatination that a continuity test will be run on is set on the Maximum simultaneous continuity tests field of the ISUP Remote Signaling Destination object. If your Continuity Tests sometimes fail, this may be because the remote switch does not have enough resources to test all of the circuits simultaneously. If this happens, you should configure a limit to the number of simultaneous continuity tests.
Reset Circuits To reset the circuits in this ISUP Circuit Group, click on the Reset Circuits pushbutton. You cannot reset the circuits when the ISUP Circuit Group is disabled.

Resetting the circuits will terminate any active calls using circuits in this ISUP Circuit Group.


Parameter

Access

Description
Circuit group index Create A numeric index identifying the circuit group.
Description Change A text string used in the EMS System Explorer to identify this circuit group. Specify a string of up to 64 characters.
Media channel Change Inactive The media channel with which the circuit group is associated. Select from the displayed list of media channels.
Base CIC Change Inactive CIC of the base circuit. The range of circuits in the circuit group is defined by the base CIC and the number of circuits. The minimum value is 1, and the maximum value of Base CIC + Number of circuits is 16384. Note that changing this value clears your selections in the Circuits denied to ISUP and Maintenance block all circuits fields (because it changes the configured circuit numbers).
TDM port Change Inactive TDM port to which the circuit group binds. Select from the displayed list of TDM ports. Note that this list excludes any which have the Clock Reference set to BITS.
Base timeslot Change Inactive Base timeslot for the circuit group. Ensure that the range of timeslots used (defined by the Base timeslot and Number of circuits parameters) does not exceed the capabilities of the underlying trunk (1-24).
Number of circuits Change Inactive Specifies the number of circuits within the circuit group. The range of circuits is defined by the base circuit and the number of circuits. Ensure that the range of timeslots used (defined by the Base timeslot and Number of circuits parameters) does not exceed the capabilities of the underlying trunk (1-24).
TDM port status Read only Status of the TDM port to which the circuit group binds. Values:
  • Active
    The port is active.
  • Inactive
    The port exists but is inactive.
  • Transient
    The port is in a transient state.
  • Quiescing
    The port is preparing for normal deactivation. It is operating normally but will not accept any new users.
  • Unequipped
    The port is not equipped.
  • Unknown
    The state of the port is unknown.
Local block status Read only Current local blocking status of this circuit group. Values:
  • Not blocked
    None of the circuits in the circuit group are blocked (but some may be locally unequipped).
  • Hardware blocked
    All of the circuits in the circuit group are either hardware blocked or locally unequipped.
  • Maintenance blocked
    All of the circuits in the circuit group are either maintenance blocked or locally unequipped.
  • Unequipped
    All of the circuits in the circuit group are locally unequipped.
  • Circuit blocked
    Not all circuits in the circuit group have the same blocking status. At least one circuit is blocked.
Remote block status Read only Current remote blocking status of this circuit group. Values:
  • Not blocked
    None of the circuits in the circuit group are blocked (but some may be remotely unequipped).
  • Hardware blocked
    All of the circuits in the circuit group are either hardware blocked or remotely unequipped.
  • Maintenance blocked
    All of the circuits in the circuit group are either maintenance blocked or remotely unequipped.
  • Unequipped
    All of the circuits in the circuit group are remotely unequipped.
  • Circuit blocked
    Not all circuits in the circuit group have the same blocking status. At least one circuit is blocked.
Trunk type Change Inactive Type of the trunk for this circuit group. Values:
  • E1
  • T1 (default)
Circuit group test result Read only Indicates the progress of the most recent circuit group test. This field applies only to tests that were initiated using the EMS pushbuttons, and not to tests performed automatically as specified by Outgoing calls per continuity check. If this field indicates that the test failed on one or more circuits or could not be run, check the individual circuits for details. Values:
  • No test
    No test has been initiated.
  • Circuit Validation Test running
    A Circuit Validation Test is in progress.
  • Circuit Validation Test OK
    A Circuit Validation Test has completed successfully for all circuits.
  • Circuit Validation Test prevented from running
    A Circuit Validation Test could not be run because none of the circuits in the group was in a suitable state to run the test.
  • Circuit Validation Test failed
    A Circuit Validation Test encountered a failure or mismatch for one or more circuits.
  • Circuit Group Query running
    An operator-initiated Circuit Group Query is in progress.
  • Circuit Group Query OK
    An operator-initiated Circuit Group Query has completed successfully for all circuits.
  • Circuit Group Query prevented from running
    A Circuit Group Query could not be run because none of the circuits in the group was in a suitable state to run the test.
  • Circuit Group Query failed
    An operator-initiated Circuit Group Query has failed.
  • Auto Group Query running
    An automatic Circuit Group Query (run by the NE) is in progress.
  • Auto Group Query OK
    An automatic Circuit Group Query (run by the NE) has completed successfully for all circuits.
  • Auto Group Query failed
    An automatic Circuit Group Query (run by the NE) has failed.
  • Continuity Test running
    A Continuity Test is in progress.
  • Continuity Test OK
    A Continuity Test has completed successfully for all circuits.
  • Continuity Test prevented from running
    A Continuity Test could not be run because none of the circuits in the group was in a suitable state to run the test.
  • Continuity Test failed
    A Continuity Test encountered a failure for one or more circuits.
Maintenance block all circuits Change This field allows you to block all circuits in this group for maintenance. Values:
  • True
    Block all circuits in the group for maintenance.
  • False
    Block only the individual circuits, if any, that are indicated in the Requested circuits to maintenance block field.
Requested circuits to maintenance block Change If the Maintenance block all circuits field is set to True, this field is not displayed. If the Maintenance block all circuits field is set to False, set one or more checkboxes to indicate which circuits in the group to block, or leave all checkboxes unset to leave all circuits unblocked.
Maintenance blocked circuits Read only Indicates which circuits in the group (Base circuit - Base circuit + 31) are currently maintenance blocked.
Circuits denied to ISUP Change Inactive Set one or more checkboxes to indicate which circuits in the group are unavailable to ISUP because they are reserved for other functions such as MTP2 signaling links. Each circuit is identified by both its circuit number and timeslot number.
Last circuit group test time Read only If the Circuit group test result field contains the results of a test, this field shows the time at which the test took place. This field applies only to tests that were initiated using the EMS pushbuttons, and not to tests performed automatically as specified by Outgoing calls per continuity check.
Tester send tone for Continuity Testing Change Inactive Specifies which tone the switch should send when acting as Tester in a Continuity Test. Unless you have strong reasons to do otherwise, you should specify the same value for this parameter on all Circuit Groups within the same Media Channel. Values:
  • High (default)
    2010 Hz tone.
  • Low
    1780 Hz tone.
Tester receive tone for Continuity Testing Change Inactive Specifies which tone the switch expects to receive when acting as Tester in a Continuity Test. Unless you have strong reasons to do otherwise, you should specify the same value for this parameter on all Circuit Groups within the same Media Channel. Values:
  • High
    2010 Hz tone.
  • Low
    1780 Hz tone.
  • Same (default)
  • Different
  • Either
Loopback receive tone for Continuity Testing Change Inactive Specifies which tone the switch expects to receive when acting as Loopback in a Continuity Test. Unless you have strong reasons to do otherwise, you should specify the same value for this parameter on all Circuit Groups within the same Media Channel. Values:
  • High
    2010 Hz tone.
  • Low
    1780 Hz tone.
  • Either (default)
Loopback send tone for Continuity Testing Change Inactive Specifies which tone the switch should send when acting as Loopback in a Continuity Test. Unless you have strong reasons to do otherwise, you should specify the same value for this parameter on all Circuit Groups within the same Media Channel. Values:
  • High
    2010 Hz tone.
  • Low
    1780 Hz tone.
  • Same (default)
  • Different
Outgoing calls per continuity check Change

Number of outgoing calls per continuity check on each circuit in this circuit group. If this is set to N, a continuity test will be performed on one call in every N outgoing calls using a particular circuit within this circuit group.

A value of zero indicates that no continuity testing is done on outgoing calls using this circuit group. The default is zero. Unless you have strong reasons to do otherwise, you should specify the same value for this parameter on all Circuit Groups within the same Media Channel.
Deactivation mode Change Specifies how child objects should be deactivated when deactivating this object. Values:
  • Normal (default)
    Shut down child objects normally before deactivating the object.
  • Quiesce
    Deactivating the ISUP Circuit Group object in quiesce mode will wait for all existing child objects using the object to be completed before deactivation. No new child objects using this object will be accepted during this deactivation period.
  • Abort
    Deactivate the object and all its child objects immediately. (This may result in errors at remote systems.)
Alarm state Read only Specifies whether any alarms are currently raised for this object. Values:
  • Clear
    No alarms are currently raised.
  • Attention Required
    Attention Required - the object is not operating normally, and needs operator intervention.
  • Attend To Dependent
    Attention Required elsewhere - another object on which this object depends is not operating normally.
Alarm log correlator - Attention Required Read only Identifier of the log message for the event that caused the last Attention Required alarm state for this object. This field is reset when the Attention Required alarm events field is reset to zero.
Alarm log correlator - Attend To Dependent Read only Identifier of the log message for the event that caused the last Attend To Dependent alarm state for this object. This field is reset when the Attend To Dependent alarm events field is reset to zero.
Attention Required alarm events Read only / Reset Number of times (since the alarm count was reset) that this object's alarm state has gone to Attention Required.
Attend To Dependent alarm events Read only / Reset Number of times (since the alarm count was reset) that this object's alarm state has gone to Attend To Dependent.
Alarm state changed timestamp Read only The time at which the Alarm state last changed.
Alarm events reset timestamp Read only The time at which the Attention Required alarm events was last reset to zero.
Circuit Attention Required alarms Read only The total number of circuits in this Circuit Group that are in Attention Required state.
Circuit Attention Required alarm events Read only / Reset The total number of times that the alarm state for a Circuit child object has gone to Attention Required.
Circuit Attend To Dependent alarms Read only The total number of circuits in this Circuit Group that are in Attend To Dependent state.
Circuit Attend To Dependent alarm events Read only / Reset The total number of times that the alarm state for a Circuit child object has gone to Attend To Dependent.
Summary child alarm state Read only Summarizes the alarm status for all children of this object. Values:
  • Clear
    No alarms are currently raised.
  • Attention Required
    Attention Required - one or more child objects are not operating normally, and need operator intervention.
  • Attend To Dependent
    Attention Required elsewhere - another object on which one or more child objects depend is not operating normally.
Requested status Read only Specifies whether an administrator has attempted to activate the ISUP Circuit Group. Values:
  • Active
    The object has been activated.
  • Inactive
    The object has not been activated or has been deactivated.
  • Disabled
    The object has been disabled.
Actual status Read only Specifies the current status of the ISUP Circuit Group. Values:
  • Active
    The object is active.
  • Activating
    Activation is in progress.
  • Deactivating
    Deactivation is in progress.
  • Inactive
    The object is inactive.
  • Disabled
    The object has been disabled.
  • Activation Failed
    The object is inactive because an activation attempt has failed.
  • Failed
    The object was active but has failed.
  • Quiescing
    The object is preparing for normal deactivation. It is operating normally but will not accept any new users.