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 DS1, 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 a two-way circuit group or one-way outgoing circuit group, you must configure an ISUP Media Channel with which the ISUP Circuit Group can be associated before you can configure the ISUP Circuit Group. For a one-way incoming circuit group, there is no need to configure the media channel.

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

Actions
Create Enable Activate
Delete Disable Deactivate
Apply Reset Statistics Refresh
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. Note that this action is valid only in North America. 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 at the local or remote system.
Query Group To run a Circuit Group Query for this ISUP Circuit Group, click on the Query Group pushbutton. The VP3000 also initiates an automatic Circuit Group Query on each circuit group once a day. Note that this action is valid only in North America.
Test Continuity To run a Continuity Test for the circuits in this ISUP Circuit Group, click on the Test Continuity pushbutton. Note that this action is valid only in North America.
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 Local index identifying the circuit group.
Media channel Change Inactive The media channel with which the circuit group is associated. Select from the displayed list of media channels. For a one-way incoming circuit group, there is no need to specify a media channel.
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 4096. 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).
DS1 port Change Inactive DS1 port to which the circuit group binds. Select from the displayed list of DS1 physical ports and DS1 over DS3 ports. Note that the list of DS1 ports 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 (1-32).
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 (1-32).
DS1 port status Read only Status of the DS1 port to which the circuit group binds. Values:
  • Active
    The DS1 port is active.
  • Inactive
    The DS1 port exists but is inactive.
  • Transient
    The DS1 port is in a transient state.
  • Quiescing
    The DS1 port is preparing for normal deactivation. It is operating normally but will not accept any new users.
  • Unequipped
    The DS1 port is not equipped.
  • Unknown
    The state of the DS1 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 (default)
  • T1
Maintenance block all circuits Change Specifies whether all circuits in this group are maintenance blocked. Values:
  • True
    All circuits are maintenance blocked.
  • False
    Individual circuits may be maintenance blocked, as requested by 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.
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.
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
    Wait for existing child objects to become inactive before deactivating the object, but do not allow any new child objects to be activated.
  • 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 (UTC) at which the Alarm state last changed.
Alarm events reset timestamp Read only The time (UTC) 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 Attention Required alarms for all circuits in this Circuit Group.
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 Attend To Dependent alarms for all circuits in this Circuit Group.
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.
  • Going Active
    Activation is in progress.
  • Going Inactive
    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.