MF Media Channel

Each MF Media Channel object is a child of an MF Remote Exchange object.

This object contains configuration parameters and status information for an MF media channel. A media channel is defined for a set of circuit groups with the same local exchange, the same remote exchange, and typically the same usage (such as emergency, intraLATA, interLATA, or operator calls). 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 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.

For initial configuration of an MF Media Channel, you need to do the following:

Note that a Media Channel cannot be deleted while it is referenced by a Circuit Group. A Media Channel can be deactivated while it is referenced by an active Circuit Group; this does not affect any of the currently active calls in that Circuit Group, but will prevent any further calls being routed over that Circuit Group.

Object-Specific Actions
Statistics Opens the Statistics viewer, which allows you to view historical statistics data for this object.

Parameter

Access

Description
Media channel index Create A numeric 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 to identify the media channel. Specify a string of up to 64 characters.
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.
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:
  • Required
  • Preferred
  • None (default)
Media allocation policy Change Inactive Media allocation algorithm on this interface. This should be set to the opposite of the algorithm used by the remote equipment using this interface, to minimize the occurrence of dual seizure (glare). Values:
  • Most idle (default)
    Use the available circuit that has been idle for the longest time.
  • Least idle
    Use the available circuit that has been idle for the shortest time.
  • Bottom up
    Use the lowest-numbered available circuit.
  • Top down
    Use the highest-numbered available circuit.
Direct IXC connection Change Inactive Specifies whether the remote exchange is a directly connected IXC. This value is used only in billing records and has no impact on how the call is signaled (as it does in SS7 signaling). Values:
  • True
  • False (default)
Receive gain Change This field applies only to calls that use DS1s on PB* adaptors, and not those on AM* or SG* adaptors or on third-party gateways. Specifies the gain that should be applied to the audio (including voice-band data calls) received on this media channel. Note that changing this value will not apply the gain to existing calls, but will be applied to new calls that are set up after the change. Range: -12 to 12 dB. The default is zero (no gain is applied). Values outside of the range -6 to 3 dB can detrimentally affect voice quality, and prevent MF / DTMF tone relay from functioning correctly. You will normally only apply negative gains, for example when configuring your system to comply with the loss plan The loss plan is described by SR2275 and T1.506-1997 (R2001).
Transmit gain Change This field applies only to calls that use DS1s on PB* adaptors, and not those on AM* or SG* adaptors or on third-party gateways. Specifies the gain that should be applied to the audio (including voice-band data calls) sent on this media channel. (The transmit gain is not applied if the call is signaled as a data call.) Note that changing this value will not apply the gain to existing calls, but will be applied to new calls that are set up after the change. Range: -12 to 12 dB. The default is zero (no gain is applied). Values outside of the range -6 to 3 dB can detrimentally affect voice quality, and prevent MF / DTMF tone relay from functioning correctly. You will normally only apply negative gains, for example when configuring your system to comply with the loss plan The loss plan is described by SR2275 and T1.506-1997 (R2001).
Billing - incoming terminating CDR type Change Specifies what additional CDR (if any) is output for incoming calls terminating on this NE using this MF Media Channel. The most commonly used combination is FGD (119/0625). Values:
  • None (default)
  • FGD (119/0625)
  • FGB (135/0653)
  • CNA (720/0625) upon LNP query
  • CNA (720/0625) always
  • TT (710/0625)
  • FGC (135/0653)
Billing - generate additional incoming call CDR Change Specifies whether an additional 119/0625 billing record should be output for incoming calls that are terminated on the switch, in addition to any CDR configured using the Billing - incoming terminating CDR type field. Values:
  • True
  • False (default)
Billing - incoming tandem CDR type Change Specifies what additional CDR (if any) is output for a tandem call routed through this NE using this MF Media Channel for the incoming leg. The most commonly used combination is FGD (119/0625). Values:
  • None (default)
  • FGD (119/0625)
  • FGB (135/0653)
  • CNA (720/0625) upon LNP query
  • CNA (720/0625) always
  • TT (710/0625)
  • FGC (135/0653)
Billing - outgoing originating CDR type Change Specifies what additional CDR (if any) is output for outgoing calls originating from this NE using this MF Media Channel. The most commonly used combination is FGD (110/0625). Values:
  • None (default)
  • FGD (110/0625)
  • FGB (134/0625)
  • TT (711/0625)
  • FGC (134/0625)
  • CAMA/IXC (110/0625)
  • CAMA/Toll (006/0001)
Billing - outgoing tandem CDR type Change Specifies what additional CDR (if any) is output for a tandem call routed through this NE using this MF Media Channel for the outgoing leg. The most commonly used combination is FGD (110/0625). Values:
  • None (default)
  • FGD (110/0625)
  • FGB (134/0625)
  • TT (711/0625)
  • FGC (134/0625)
  • CAMA/IXC (110/0625)
  • CAMA/Toll (006/0001)
  • 119/0625
    Note that if a CDR of this type has already been recorded as specified in the trunk used for the incoming leg of the call, it will not be recorded again for the outgoing leg.
Billing - connected-switch LRN Change The originating LRN associated with this media channel. This is used to identify the originating exchange for incoming calls.
Billing - connected-switch NPA Change The NPA associated with calls on this media channel, which is used if no NPA is included in the ANI data on the incoming call.
CNA billing for incoming calls - CIC Change This field is visible if either Billing - incoming terminating CDR type or Billing - incoming tandem CDR type is set to CNA (720/0625) upon LNP query or CNA (720/0625) always. Carrier Identification Code to use in CNA billing records generated for incoming calls on this trunk group. Range: 0 - 9999. Default is 0.
CNA billing for incoming calls - CNA billing number Change This field is visible if either Billing - incoming terminating CDR type or Billing - incoming tandem CDR type is set to CNA (720/0625) upon LNP query or CNA (720/0625) always. The billing number to be included in CNA billing records generated for incoming calls on this trunk group. Either leave this field blank, or specify a ten digit billing number.
CNA billing for incoming calls - append ANI Change This field is visible if either Billing - incoming terminating CDR type or Billing - incoming tandem CDR type is set to CNA (720/0625) upon LNP query or CNA (720/0625) always. Specifies whether the received ANI, if any, should be appended to the CNA billing records for incoming calls. Values:
  • True
  • False (default)
% utilization Read only Percentage utilization of the media channel. This is calculated by dividing the number of allocated circuits by the total number of circuits in the media channel and multiplying the result by 100.
% utilization of allowed circuits Read only Percentage utilization of the circuits that this switch is allowed to allocate in the media channel (the number of circuits allocated by the switch as a proportion of the number of circuits that the switch is allowed to allocate).
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 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 Attend To Dependent alarm events was last reset to zero.
Requested status Read only Specifies whether an administrator has attempted to activate the MF Media Channel. 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 Media Channel. Values:
  • Active
    The object is active.
  • Activating
    Activation is in progress.
  • Deactivating
    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.