Each ISUP Media Channel object is a child of an ISUP Remote Signaling Destination object.
This object contains configuration parameters and status information for an ISUP Media Channel. A Media Channel is defined for a set of Circuit Groups with the same local exchange and the same remote exchange and typically the same quality of service. A media channel is uniquely identified by the local and remote exchanges and a media channel index.
Each media channel maintains a list of the associated circuit groups, each referenced by the CIC of the base circuit. Each associated circuit group references its associated media channel using the media channel index.
Routes are defined using Media Channels rather than individual circuit groups because it generates simpler routing tables.
There is no need to define an ISUP Media Channel for a one-way incoming trunk; it is required only for two-way or one-way outgoing trunks.
For initial configuration of an ISUP Media Channel, you need to do the following:
Parameter |
Access |
Description |
Media channel index | Create | Local index identifying the media channel. This index is referenced by the Circuit Groups which are associated with the media channel. |
Description | Change | A text string used in the EMS System Explorer to identify the media channel. Specify a string of up to 64 characters. |
Local trunk group number | Change inactive | The Trunk Group ID of the Media Channel. The primary use for this field is for billing records. When a call is set up using a circuit on this trunk group, the billing record output will indicate the trunk group's number. |
Allocation policy | Change Inactive | Specifies the circuit allocation policy to be used by the local exchange for allocating circuits within the media channel. (This should be different from the value used at the remote destination.) Values:
|
Guard timer duration | Change Inactive | Duration, in ms, of the guard timer. The default is 750ms. |
Dual seizure policy | Change Inactive | Policy used to determine the dual seizure controlling exchange for circuits within this media channel. (This should be different from the value used at the remote destination.) Values:
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Echo cancellation | Change inactive | Echo cancellation requirements for this Media Channel. Echo cancellation can be set up either on a specific Media Channel (for example to use echo cancellation on a media channel that represents a satellite link), or in number validation (for example to use echo cancellation on all international calls).
Values:
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% utilization | Read only | Percentage utilization of the media channel; the number of allocated circuits as a percentage of the total number of circuits in the media channel. |
Record incoming CDRs | Change | Specifies whether to make billing records (known as Incoming Call Detail Records) for transit calls on this Media Channel. Values:
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Record outgoing CDRs | Change | Specifies whether to make billing records (known as Outgoing Call Detail Records) for transit calls on this Media Channel. 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 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. |
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. |
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. |
Requested status | Read only | Specifies whether an administrator has attempted to activate the ISUP Media Channel. Values:
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Actual status | Read only | Specifies the current status of the ISUP Media Channel. Values:
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