This feature is responsible for building a Call Detail Record that reflects the actions taken whilst processing a session.

It runs once when a session is ending and creates a CDR based on information gathered from session state, and then writes it out using the cdr-ra.

Warning This feature is deprecated and not enabled by default. It has been superseded by the VoLTE SIP AVP CDR feature


Feature script name


Applicable contexts

SIP service

Prerequisite features

None, but information from various features is used if available

Session state inputs and outputs


If any of these fields are unset the feature will skip writing them to the CDR file.

This feature uses the same session state fields as the Sentinel SIP Legacy CDR feature. This page will only discuss the additions to the fields described there.

Name Type Description Where set



The accepted terminating domain in a T-ADS scenario

MMTelWifiChargingFinalisation feature, SCCTADSParallelRouting feature


VolteSipLegacyCdr 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 → VolteSipLegacyCdr
or with rhino-stats:

Name Description

Incremented each time the feature runs


Incremented when a fatal error occurs before feature execution


Incremented when a non fatal error occurs while the feature is executing


Incremented when a fatal error occurs while the feature is executing


Incremented when feature execution does not complete within a reasonable time frame


Incremented when a CDR is written successfully


Incremented when a CDR is not written successfully due to an error


This features uses the information from the session state fields mentioned above and constructs a protobuf message out of it for output. See Legacy CDR Format for the format of these messages.

Also see Charging Information for general information about the contents of CDRs and CCRs.

Note This feature only supports writing binary CDRs. If the cdr-ra is configured to write string CDRs the feature will fail to execute.

Feature responses

Response Reason


feature has finished

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Sentinel VoLTE Version 2.7.0