SuppressSdpCdr is a system feature which prevents SDP-change initiated CDRs from being written by the VolteInterimCdr feature for non-roaming Mobile Terminating calls.

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Statistics

SuppressSdrCdr statistics are tracked by the volte.sentinel.sip SBB and can be found under the following parameter set in REM:
SLEE-Usage → volte.sentinel.sip service → volte.sentinel.sip SBB → feature → SuppressSdpCdr
or with rhino-stats:
"SLEE-Usage.Services.ServiceID[name=volte.sentinel.sip,vendor=OpenCloud,version=2.7.0].SbbID[name=volte.sentinel.sip,vendor=OpenCloud,version=2.7.0].feature.SuppressSdpCdr"

Name

Description

Started

Incremented each time the feature runs

NoPendingSdpCdr

Incremented when the feature runs but there is no pending SDP CDR to suppress

SdpCdrWriteSuppressed

Incremented each time an SDP CDR is suppressed

SdpCdrWriteAllowed

Incremented each time the feature runs but doesn’t suppress a pending SDP CDR

Functionality

This feature uses information available in session state to suppress interim CDRs from being written in response to SDP changes for non-roaming Mobile Terminating calls. The mechanism it uses to suppress the CDRs from being written by the VolteInterimCdr feature is to unset the WriteCdrOnSDPChange session state field.

When this feature runs, if the session state variable RoamingIndicator is False, and CallType is MobileTerminating, the WriteCdrOnSDPChange session state field will be set to False.

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Sentinel VoLTE Version 2.7.0