| Description | This object, in conjunction with the card level
persistentXgcpEventsTable, controls how persistent
CAS events (like seize, disconnect, etc) related
to an incoming call observed on this DS0 are notified to
the Media Gateway Controller (MGC).
At the card level, the persistentXgcpEventsTable allows
MGCP package-event combinations to be configured as persistent.
For example, when L/hd is added to the persistentXgcpEventsTable,
the hook-down event in line package will be notified to the MGC
every time it is observed without the MGC requesting for that event.
Since the same CAS event can map to different MGCP events under
different packages (eg. the CAS event 'seize' can be 'sup' in
'MS' package and 'hd' in 'BL' package) and different lines could
be running different packages at a given time, there needs to be
a per-DS0 object indicating what package should be used while
notifying CAS events observed on that DS0. This object,
ds0CasIncomingMgcpPackage specifies the package that will be
used while notifying CAS events observed on an incoming call
on this DS0.
This object can be set to a package name from
xgcpCapabilityPackageTable whose
xgcpCapabilityPackageEnable is true or the string 'basic'
indicating that one of the basic packages in that table
(G, T, L, H, R, D or M) to which the observed event belongs
can be used.
This object is used only if the protocol is MGCP.
If the notification is in response to an RQNT, VISM
uses the package (and event name) that the MGC used
to request the event regardless what this object is set to.
In the absence of an RQNT, the observed CAS event is
encoded according to the package that this object specifies.
A 'seize' observed on the CAS signaling channel on this DS0,
for example is encoded as 'ms/sup' if this object is
set to 'ms', 'bl/hd' if this object is set to 'bl' or
as 'L/hd' if this object is set to 'basic'.
If this package/event is present in persistentXgcpEventsTable,
a notification is generated, otherwise this event is discarded.
An attempt to set this object to a package name whose
xgcpCapabilityPackageEnable is false in
xgcpCapabilityPackageTable will fail.
This object is used only if the ds0CasDirectionality is set
to 'bidirectional' or 'incoming'. |