B.1 Originating filter criteria for OIR service

24.6073GPPOriginating Identification Presentation (OIP) and Originating Identification Restriction (OIR) using IP Multimedia (IM) Core Network (CN) subsystemProtocol specificationRelease 16TS

All outgoing SIP requests are forwarded to an Application Server providing the OIR service under the following conditions:

– the user is subscribed to the OIR service in permanent mode; or

– the request does not include a Privacy header field.