This feature
is used to populate the session state TADSCircuitRoutes with the primary and companion device CS routes.
Feature Cheat Sheet
| B2BUA Instance | SAS Support | Originating / Terminating | Point(s) in Session Plan | Network Operator Data | Subscriber Data | Stateful or Stateless | POJO Feature or SBB Feature | Other notes |
|---|---|---|---|---|---|---|---|---|
SCC |
Yes |
Terminating |
|
Yes |
No |
Stateless |
POJO |
Session Input Variables
| Session state variable name | Type | Comments |
|---|---|---|
RoutingMode |
TADSRoutingMode (Enum) |
Determines whether CS and/or PS routing is enabled and the preferred attempt order. |
CircuitRoutesAlreadyDetermined |
boolean |
Set to true when circuit routes have already been set. |
HasCompanionDeviceCSRNs |
boolean |
Set to true when companion CSRNs have been identified by the FetchCMSISDN/FetchMRSN features. |
CompanionDeviceCSRNs |
Queue<String> |
Contains companion device CSRNs. |
HasCSRN |
boolean |
Set to true when a primary CSRN has been identified by the FetchCMSISDN/FetchMRSN features. |
CSRN |
String |
Contains the primary device CSRN. |
TADSEndSessionWhenNoValidRouteFound |
boolean |
Set to true by SCCTADSDataLookup feature if configuration |
Session Output Variables
| Session state variable name | Type | Comments |
|---|---|---|
CircuitRoutesAlreadyDetermined |
boolean |
Set to true when circuit routes have already been set. |
TADSCurrentLegRoute |
String |
Contains a CSRN or URI that is used by SCCTADSRouting and SCCTADSParallelRouting features to setup a new CS/PS leg. |
TADSCircuitRoutes |
Queue<String> |
Contains valid primary and companion CS routes (CSRNs). |
Statistics
Statistics are tracked by the sentinel.volte SBB
and can be found under the following parameter set in REM:
SLEE-Usage → sentinel.volte service → sentinel.volte SBB → feature → SCCTADSDetermineCircuitRoutes
or with rhino-stats:
"SLEE-Usage.Services.ServiceID[name=sentinel.volte,vendor=OpenCloud,version=4.1].SbbID[name=sentinel.volte,vendor=OpenCloud,version=4.1].feature.SCCTADSDetermineCircuitRoutes"
| Name | Type | Description |
|---|---|---|
Started |
Counter |
Incremented when the feature is triggered. |
FailedToStart |
Counter |
Incremented when the feature fails to start. |
FailedDuringExecution |
Counter |
Incremented when the feature fails while executing. |
IssuedWarning |
Counter |
Incremented when the feature issues a warning. |
TimedOut |
Counter |
Incremented when the feature times out during execution. |
FoundValidCSRoute |
Counter |
Incremented when a route is added to the queue. |
TriggeredEndSession |
Counter |
Incremented when the feature ends the session. |
Behaviour
Determining CS Routes
The feature adds primary and companion CS routes (CSRNs) that are present in session state CSRN and CompanionDeviceCSRNs into the session state TADSCircuitRoutes.
The session state TADSCircuitRoutes is then used by SCCTADSRouting and SCCTADSParallelRouting features
to setup the appropriate CS legs.
|
The Circuit Switched Routing Number (CSRN) is made up of the CMSISDN, MSRN, or TLDN. The value is fetched by
either FetchCMSISDN, FetchMSRN or CDMAFetchTLDN
depending on configuration in VolteServiceConfigProfileTable and SCCTADSDataLookUpConfigProfileTable.
|
