ISDN SCTP Association

The ISDN SCTP Association object is a child of the ISDN SCTP Associations object. It represents the Call Agent's view of the resources on a Media Gateway that support signaling for ISDN connections. For a MetaSwitch Media Gateway, it corresponds to the LAPD Resource object below a PB* adaptor in the Media Gateway.

In general, the ISDN SCTP Association object for MetaSwitch gateways is included as part of the delivered configuration. If you modify the configuration of the LAPD Resource object below the Media Gateway, you will need to update the equivalent configuration in the ISDN SCTP Association below the corresponding Trunk / Access Gateway, but you may find it easier to use the "shadow object" actions on the Trunk / Access Gateway to make this update rather than changing the objects explicitly.


Parameter

Access

Description
Port name Change This field appears only if the parent Trunk / Access Gateway is a MetaSwitch Media Gateway; it does not appear for a third-party gateway. A unique identifier for this association among all other devices on the Call Agent. This identifier is used by other objects that need to reference this association. It must match the port name specified for the LAPD Resource object that is a child of the Media Gateway corresponding to the parent Trunk / Access Gateway.
Description Change A text string used in the EMS System Explorer to identify this association. Specify a string of up to 40 characters.
Provider status Read only The availability status of the port. Values:
  • Unavailable
  • Available
  • Inactive
  • Active
  • Out of service
  • Quiescing
  • Unconfigured
  • Pending available
Deactivation mode Read only Specifies how child objects should be deactivated when deactivating this object. Values:
  • Normal
    Shut down child objects normally before deactivating the object.
  • Quiesce
    Deactivating the object in quiesce mode will wait for all existing users of the port (typically PRI interfaces) to be deactivated, which typically requires administrator intervention. No new users will be accepted for this port during this deactivation period.
  • Abort
    Deactivate the object and all its child objects immediately. (This may result in errors at remote systems.)
If a Normal or Quiesce deactivation is already in progress, you can force a faster deactivation by changing the value from Normal to Quiesce or from Quiesce to Abort.
IP address Change Inactive The IP address used by SCTP to access this association.
SCTP port Change Inactive The IP port number used by SCTP to access this association.
SCTP checksum method Change Inactive Specifies the algorithm used for checksum calculations on SCTP packets. Values:
  • Adler32
  • CRC32
  • Auto-detect
    Detect the appropriate algorithm automatically; use CRC32 if possible, otherwise Adler32.
The default value is Adler32 for a MetaSwitch Media Gateway, and CRC32 for a third-party Media Gateway.
Number of SCTP streams available Change Inactive The number of SCTP streams available on this association to support ISDN connections. Range: 1 - 65535
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.
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.
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.
Alarm state changed timestamp Read only The time at which the Alarm state last changed.
Requested status Read only Specifies whether an administrator has attempted to enable the ISDN SCTP Association. Values:
  • Active
    The object has been activated.
  • Inactive
    The object has not been activated or has been deactivated.
  • Disabled
    The object has not been enabled or has been disabled.
Actual status Read only Specifies the current status of the ISDN SCTP Association. 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.