MF Circuit Group

Each MF Circuit Group object is a child of an MF Remote Exchange object.

This object contains configuration parameters and status information for an MF 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 remote exchange, the DS1 port, the base timeslot and the number of circuits.

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

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

Note that:

Actions
Create Enable Activate
Delete Disable Deactivate
Apply Reset Statistics Refresh
Object-Specific Actions
Play RMB signal To play a Reverse Make Busy signal on all active circuits in the Circuit Group, click on the 'Play RMB signal' pushbutton. If this is not possible because one or more of the circuits is carrying an incoming call, the circuit group plays the signal when the call ends. This pushbutton is disabled when Circuit Type is set to Outgoing.
Cancel RMB signal To stop playing the Reverse Make Busy signal on all of the circuits in the Circuit Group, click on the 'Cancel RMB signal' pushbutton. This pushbutton is disabled when Circuit Type is set to Outgoing.

Parameter

Access

Description
Circuit group index Create Local index identifying the circuit group.
Circuit type Change Inactive Indicates whether the circuits in this circuit group are incoming or outgoing. Values:
  • Incoming
  • Outgoing
Media channel Change Inactive Local index identifying the MF media channel with which the circuit group is associated. Select from the displayed list of MF Media Channels. (Only active MF Media Channels are displayed.) This field is valid only when Circuit type is set to Outgoing; otherwise you cannot specify a media channel.
Protocol Profile Change Inactive The MF Protocol Profile object referenced by the circuit group.Select from the displayed list of MF Protocol Profiles.
Call profile Change Inactive The Call Profile object referenced by the circuit group. Call Profiles are used to determine the format of the outpulsed digit sequence and other call setup parameters. Select from the displayed list of Call Profiles. Your selection should be based on the MF signaling protocol to be used and, if the protocol is equal access, the type of trunk to the MF Remote Exchange. There are three pre-defined Call Profile objects:
  • Pre-equal access
  • Equal access via an access tandem
  • Equal access direct to carrier.
DS1 port Change Inactive DS1 port to which the circuit group binds. Select from the displayed list of Physical DS1 Ports. Note that the list of DS1 ports excludes any which have the Clock Reference set to BITS or do not have Line framing set to D4 MF or ESF MF.
Base timeslot Change Inactive Base timeslot for the circuit group. The base timeslot and the number of circuits defines the range of circuits. Ensure that the range does not exceed the capabilities of the underlying trunk (1-24).
Number of circuits Change Inactive Number of circuits within the circuit group. The range of circuits is defined by the base timeslot and the number of circuits. Note that the range must not exceed the capabilities of the underlying trunk (1-24).
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.
Additional alarm log correlator - Attention Required Read only If available, the identifier of the log message for the original 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.
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.
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.
Additional alarm log correlator - Attend To Dependent Read only If available, the identifier of the log message for the original 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.
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 either the Attention Required alarm events or the Attend To Dependent alarm events was last reset to zero.
Circuit Attention Required alarms Read only The total number of Circuits associated with 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 associated with this Circuit Group.
Circuit Attend To Dependent alarms Read only The total number of Circuits associated with 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 associated with 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 MF 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 MF 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.
  • Waiting For Parent
    The object cannot be used because its parent object is not yet active.
  • Parent Failed
    The object cannot be used because its parent object has failed.