This feature
uses information from a SIP INVITE and session state to determine if the call includes shared or undisclosed identity
information associated with a companion device. The feature is run in both originating and terminating session execution plans.
Feature cheat sheet
| B2BUA Instance | SAS Support | Originating / Terminating | Point in Session Plan | Network Operator Data | Subscriber Data | Stateful or Stateless | POJO Feature or SBB Feature |
|---|---|---|---|---|---|---|---|
MMTEL |
Yes |
Originating and Terminating |
|
Yes |
Yes |
Stateless |
POJO |
Prerequisite features
These features must run before DetermineSharedUndisclosedIdentities:
-
SubscriberDataLookupFromHlr/SubscriberDataLookupFromHss
Session input variables
| Session State variable name | Variable type |
|---|---|
SentinelSelectionKey |
SentinelSelectionKey |
MetaswitchCompanionDevice |
CompanionDeviceData |
Subscriber |
String |
Session output variables
| Session State variable name | Variable type | Comments |
|---|---|---|
SharedIdentitySip |
String |
SIP shared identity used by the companion device. |
SharedIdentityTel |
String |
TEL shared identity used by the companion device. |
UndisclosedIdentity |
String |
The undisclosed identity of the companion device. |
HideUndisclosedIdentities |
Boolean |
Set to true if call is to the undisclosed identity of the companion device. Used by the HideUndisclosedIdentity feature. |
BarIncomingCall |
Boolean |
Set to true if the call is made to undisclosed identity and configuration is set to bar. |
Network operator data
This feature reads HideUndisclosedIdentities in the feature configuration profile table HideUndisclosedIdentityConfigProfileTable to determine if the feature should execute.
| Parameter | Type | Description | Default |
|---|---|---|---|
HideUndisclosedIdentities |
Boolean |
Determines if calls to Undisclosed Identities should be hidden. |
true |
Statistics
DetermineSharedUndisclosedIdentities statistics are tracked by the sentinel.volte.sip SBB
and can be found under the following parameter set in REM:
SLEE-Usage → sentinel.volte.sip service → sentinel.volte.sip SBB → feature → DetermineSharedUndisclosedIdentities
or with rhino-stats:
"SLEE-Usage.Services.ServiceID[name=sentinel.volte.sip,vendor=OpenCloud,version=4.0.0].SbbID[name=sentinel.volte.sip,vendor=OpenCloud,version=4.0.0].feature.DetermineSharedUndisclosedIdentities"
| Name | Type | Description |
|---|---|---|
Started |
Counter |
Incremented each time the feature runs |
FailedToStart |
Counter |
Incremented when a fatal error occurs before feature execution |
IssuedWarning |
Counter |
Incremented when a non-fatal error occurs during feature execution |
FailedDuringExecution |
Counter |
Incremented when a fatal error occurs during feature execution |
TimedOut |
Counter |
Incremented when feature execution does not complete within a reasonable time frame |
UnableToDetermineUndisclosedIdentity |
Counter |
Incremented when the feature fails to find the subscriber id, sharedIdentitySip, and sharedIdentityTel when determining if undisclosed and shared identity logic should be applied. |
SubscriberIsUndisclosedIdentity |
Counter |
Incremented if the subscriber is a companion device undisclosed identity. |
SubscriberIsSharedIdentity |
Counter |
Incremented if the subscriber is a companion device shared identity. |
HideUndisclosedIdentities |
Counter |
Incremented if the subscriber is undisclosed and the call will be barred. |
Behaviour
The feature checks session state, feature configuration, and the incoming SIP request in order to set session state fields, which are subsequently used by downstream features associated with companion calls.
-
If triggered in the originating execution plan the feature sets session state fields to hide the companion device number from the callee.
-
If triggered in the terminating execution plan, when the call is made to an undisclosed identity, then the feature sets the
BarIncomingCallsession state field. This is used by the General Barring feature to bar the incoming call.
Values examined
| Value Name | Source | Notes |
|---|---|---|
MetaswitchCompanionDevice |
Session State |
Store information used to determine if the call is from or to a companion device. |
SharedIdentitySip |
Session State |
Set by the DetermineSharedUndisclosedIdentities feature which is used by the HideUndisclosedIdentity feature. |
SharedIdentityTel |
Session State |
Set by the DetermineSharedUndisclosedIdentities feature which is used by the HideUndisclosedIdentity feature. |
UndisclosedIdentity |
Session State |
Set by the DetermineSharedUndisclosedIdentities feature. |
HideUndisclosedIdentities |
Session State |
Flag set by the DetermineSharedUndisclosedIdentities feature to indicate to the HideUndisclosedIdentity feature to "hide" the identity of the caller by replacing SIP headers with the shared identity of the companion device. |
BarIncomingCall |
Session State |
Set by the DetermineSharedUndisclosedIdentities feature which is used by the GeneralBarring Feature to bar the call. |
