The IAD Group object is a child of the IAD Configuration object.
An IAD Group corresponds to an underlying resource with a limited bandwidth. Typically an IAD Group is defined for each DSLAM associated with the NE, and all IADs subscribed to that DSLAM belong to the same IAD Group. IAD Groups enable Call Admission Control to be performed for the transmission links from the DSLAMs.
The bandwidth required on the ATM virtual path to the DSLAM is determined by specifying the maximum number of concurrent calls that can be in progress on the IAD Group at any time. The maximum number of concurrent calls is specified at two levels:
Parameter |
Access |
Description |
Group index | Read only | Local index identifying the IAD Group. This index is referenced by the IADs that are associated with the IAD Group. |
Group name | Change | A name used in the EMS System Explorer to identify this IAD Group. Specify a name of up to 30 characters. |
Current maximum concurrent calls allowed | Read only | The total of the Maximum concurrent calls allowed values for all IADs in this IAD Group. |
Current maximum concurrent PCM calls allowed | Read only | The total of the Maximum concurrent calls allowed values for all IADs in this IAD Group. |
Maximum concurrent calls allowed | Change | Maximum number of calls that can be in progress at any one time on IADs in this IAD Group. This count includes both ADPCM (G.726) and PCM (G.711) calls. This value allows you to restrict the amount of bandwidth used for the IAD Group, on the assumption that not all voice ports on all IADs will need to be in use at the same time. It operates in a similar way to restricting the maximum number of concurrent calls on each IAD. This value cannot exceed the value of Current maximum concurrent calls allowed for this IAD Group. If you reduce it so that it is below the value of Calls in progress for this IAD Group, the existing calls will be maintained, but no new calls will be accepted for this IAD Group until enough calls have ended to leave the "calls in progress" count below the new maximum. Changing this value will change the value of the Required sustained cell rate parameter; you may need to update the DSLAM configuration to reflect this. |
Maximum concurrent PCM calls allowed | Change | Maximum number of PCM (G.711) calls that can be in progress at any one time on IADs in this IAD Group. This value allows you to restrict the amount of bandwidth used for the IAD Group, on the assumption that not all voice ports on all IADs will need to be in use at the same time. It operates in a similar way to restricting the maximum number of concurrent calls on each IAD. This value cannot exceed the value of Current maximum concurrent PCM calls allowed or Maximum concurrent calls allowed for this IAD Group. If all IADs in the IAD Group support only PCM and not ADPCM (AAL2 channel profile is set to Profile 9), this value should be the same as Maximum concurrent calls allowed. If you reduce the maximum concurrent calls allowed so that it is below the value of Calls in progress for this IAD Group, the existing calls will be maintained, but no new calls will be accepted for this IAD Group until enough calls have ended to leave the "calls in progress" count below the new maximum. Changing this value will change the value of the Required sustained cell rate parameter; you may need to update the DSLAM configuration to reflect this. |
Required sustained cell rate | Read only | The sustained cell rate required to support calls on this IAD Group. This is calculated from the values for Maximum concurrent calls allowed and Maximum concurrent PCM calls allowed. |
Requested status | Read only | Specifies whether an administrator has attempted to enable the IAD Group. Values:
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Actual status | Read only | Specifies the current status of the IAD Group. Values:
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