The ISDN PRI DS1 object defines an individual DS1 channel that provides a T1 connection over an ISDN Primary Rate Interface.
Each ISDN PRI DS1 object is a child of an ISDN Primary Rate Interface object. If the parent ISDN Primary Rate Interface has NFAS interface set to True, you can define at most 20 ISDN PRI DS1 child objects; otherwise you can define only one ISDN PRI DS1 child object.
For initial configuration of an ISDN PRI DS1, you need to do the following.
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You cannot deactivate or delete an ISDN PRI DS1 if the parent ISDN Primary Rate Interface is active and this DS1 is configured as its primary D-channel DS1 or secondary D-channel DS1. |
Object-Specific Actions | |
Restart all B-channels | This action restarts all B-channels on this DS1 (for example to clear an error condition in which some of the channels are out of sync with the peer device). This action is available only when the DS1 is active. Restarting the B-channels will end all calls that are using this DS1. You will be prompted to confirm or cancel the action. |
Parameter |
Access |
Description |
DS1 identifier | Create | Identifier for this DS1 within the parent ISDN Primary Rate Interface. This parameter is used only if the parent ISDN Primary Rate Interface has NFAS interface set to True. Specify a value in the range 0 - 19, or click on the ellipsis symbol at the end of the field to select the next free value or browse through the available values. |
Description | Change | A text string used in the EMS System Explorer to identify this ISDN PRI DS1. Specify a string of up to 64 characters. |
TDM port | Change Inactive | The TDM port supporting this DS1. Click on the ellipsis symbol at the end of the field to select from the list of Trunk / Access Gateways, and then from the list of TDM Ports on the selected gateway for which Profiles supported includes the value ISDN.
If the DS1 will be used for the primary or secondary network-side or user-side D-channel of its parent ISDN Primary Rate Interface, you must select a TDM Port that supports a D-channel of the appropriate type; otherwise you can select a TDM Port with no D-channel.
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Cascade fault monitoring level on apply | Change | This field is visible only when you change the TDM port used by this DS1 and Fault monitoring level is set to Suppress alarms (level 5). Specifies whether to set Fault monitoring level in the specified TDM Port and its associated DS1 Port to match the value on this DS1. Values:
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Excluded timeslots | Change Inactive | Timeslots on this DS1 that are not available for use as D-channels or B-channels. By default, all channels are available for use, but you can restrict the range of available channels (for example to provide partial T1 capacity). You cannot activate this DS1 if all of the timeslots are excluded. Select zero or more of the timeslot values 1 - 24. Timeslot 24 must not be excluded if the DS1 supports a D-channel. |
PBX capacity groups - Timeslot 1-24 | Change | The value of this field applies only if the ISDN PRI is used for an ISDN PBX. It appears once for each of the DSI's 24 DS0 timeslots, except for those that have been excluded using the Excluded timeslots field or which are in use as a Primary D-channel DS0 or Secondary D-channel DS0.
Specifies the capacity group for each of the DS0s from 1-24. These are used by the PBX and Direct Inward Calling Number objects to reserve capacity for incoming calls to the PBX. For more details, see Operations Manual: Call Services and Subscribers. Values:
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Media state | Read only | State of the underlying TDM Port associated with this DS1. Possible values:
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Deactivation mode | Change | Specifies how child objects should be deactivated when deactivating this object. Values:
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Network-side ISDN D-channel available | Read only | This field appears only if TDM Port references a port on a MetaSwitch Media Gateway (not on a third-party gateway). Specifies whether the selected TDM Port can be used for a network-side D-channel. This is the case if it is on a PB3000 adaptor and is configured using the NE CRAFT UI to support ISDN, or if it is on a PB3100, PB4000, PB4500, or PB5000 adaptor. Values:
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User-side ISDN D-channel available | Read only | This field appears only if TDM Port references a port on a MetaSwitch Media Gateway (not on a third-party gateway). Specifies whether the selected TDM Port can be used for a user-side D-channel. This is the case if it is on a PB3000 adaptor and is configured using the NE CRAFT UI to support ISDN, or if it is on a PB3100, PB4000, PB4500, or PB5000 adaptor. Values:
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ISDN D-channel in use | Read only | Indicates whether there is a D-channel in use on this DS1. If a D-channel is in use, you cannot deactivate the DS1 without first deactivating its parent ISDN Primary Rate Interface. Values:
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B-channel restart state | Read only | If a restart of all B-channels on this DS1 has been requested, this field shows the status of this restart action. Values:
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Fault monitoring level | Read only | Specifies whether alarms raised on this ISDN PRI DS1 are suppressed, so that the EMS does not display them or send them to SNMP alarm notification destinations. The setting of this field is taken from the parent ISDN PRI and you cannot change it. Values:
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Alarm state | Read only | Specifies whether any alarms are currently raised for this object. Values:
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Alarm state changed timestamp | Read only | The time at which the Alarm state last changed. |
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. |
Attention Required alarm events reset timestamp | Read only | The time at which the Attention Required alarm events was last 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. |
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. |
Attend To Dependent alarm events reset timestamp | Read only | The time at which the Attend To Dependent alarm events was last reset to zero. |
Requested status | Read only | Specifies whether an administrator has attempted to activate the port. Values:
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Actual status | Read only | Specifies the current status of the port. Values:
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