23.2043GPPRelease 16Stage 2Support of Short Message Service (SMS) over generic 3GPP Internet Protocol (IP) accessTS
For the purposes of the present document, the terms and definitions given in TR 21.905  and the following definitions apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 :
Converged IP Messaging: as defined in OMA-RD-CPM-V1_0 . Converged IP Messaging supports one-to-one, one-to-many personal communications, and also communication with Applications.
CPM Message: as defined in OMA-RD-CPM-V1_0 : Information that is sent to one or more recipients. A CPM Message can contain several discrete Media (e.g. text, images, audio-clips, video-clips).
CPM AS: An application server supporting the functionality of a CPM Participating Function and/or a CPM Controlling Function as defined in OMA-RD-CPM-V1_0 .
IM origination: origination of an Instant Message by an IMS UE.
IM termination: termination of an Instant Message by an IMS UE.
IMS core: refers to the core session control elements of the IM CN Subsystem, i.e. the CSCFs, and the IBCF.
Instant Message: an Instant Message as defined in the OMA-TS-SIMPLE_IM-V1_0  and TS 24.247 . The term Instant Message is also used to designate a CPM Message.
Interworking Selection Function: as defined in OMA-AD-CPM-V1_0 . The Interworking Selection Function selects an Interworking Function that should perform the actual interworking between CPM and SMS.
MSISDN-less SMS operation: operation to support SMS communication without the need of MSISDN in the UE’s IMS subscription profile.
MSISDN-less Correlation ID: information element which consists of Receiver Identity (i.e. SIP-URI of B party), Sender Identity (i.e. SIP-URI of A party), and HLR Identity (i.e., HLR that serves the B party).
Non-supporting MSISDN-less SMS UE: a UE which does not support MSISDN-less SMS operation as defined in this specification.
SIMPLE IM service: the Instant Messaging Service as defined in the OMA-TS-SIMPLE_IM-V1_0 .
SM origination: origination of a Short Message (including SMS over IP) by an SMS capable UE, as defined in TS 23.040  and this specification.
SM termination: termination of a Short Message (including SMS over IP) by an SMS capable UE, as defined in TS 23.040  and this specification.
SMS: the Short Message Service as defined in the TS 23.040 .
SMSF: the SMS Function as defined in TS 23.501 .
SMSIP MESSAGE: an immediate message as defined in TS 23.228 , which encapsulates a SM in its text body.
SMSIP UE: a UE which supports SMSIP MESSAGE.
For the purposes of the present document, the abbreviations given in TR 21.905  and the following apply:
CPM Converged IP Messaging
IM Instant Message
IMDN Instant Message Disposition Notification
ISF Interworking Selection Function
SM Short Message