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Content for  TS 24.629  Word version:  17.0.0

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1  Scopep. 6

The present document specifies the stage three (protocol description) of the Explicit Communication transfer (ECT) supplementary service, based on stage one and two of the ISDN ECT supplementary service. It provides the protocol details in the IP Multimedia (IM) Core Network (CN) subsystem based on the Session Initiation Protocol (SIP) and the Session Description Protocol (SDP).
The present document is applicable to User Equipment (UE) and Application Servers (AS) which are intended to support the ECT supplementary service.
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2  Referencesp. 6

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TS 24.229: "Internet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3".
[2]
RFC 3515:  "The Session Initiation Protocol (SIP) Refer Method".
[3]
RFC 3892:  "The Session Initiation Protocol (SIP) Referred-By Mechanism".
[4]
RFC 3891:  "The Session Initiation Protocol (SIP) "Replaces" Header".
[5]  Void.
[6]
RFC 3261:  "SIP: Session Initiation Protocol".
[7]
TS 29.228: "IP Multimedia (IM) Subsystem Cx and Dx Interfaces; Signalling flows and message contents".
[7A]
TS 29.229: "Cx and Dx interfaces based on the Diameter protocol; Protocol details".
[8]
TS 24.610: "Communication HOLD (HOLD) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification".
[9]
TS 24.605: "Conference (CONF) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification".
[10]
TS 24.628: "Common Basic Communication procedures using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification".
[11]
ETSI TS 183 029 V2.5.0: "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); PSTN/ISDN simulation services: Explicit Communication Transfer (ECT); Protocol specification".
[12]
TS 24.315: "IP Multimedia Subsystem (IMS) Operator Determined Barring (ODB); Stage 3".
[13]
RFC 7090  (April 2014): "Public Safety Answering Point (PSAP) Callback".
[14]
RFC 6665:  "SIP-Specific Event Notification".
[15]
RFC 4538:  "Request Authorization through Dialog Identification in the Session Initiation Protocol (SIP)".
[16]
RFC 7647  (September 2015): "Clarifications for the Use of REFER with RFC6665".
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3  Definitions and abbreviationsp. 7

3.1  Definitionsp. 7

For the purposes of the present document, the following terms and definitions apply:
ECT session identifier URI:
PSI created and inserted by an ECT AS that resolves to the AS itself
transferee:
party being transferred to the transfer target
transferor:
party initiating the transfer
transfer target:
party that the existing communication is transferred to
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3.2  Abbreviationsp. 7

For the purposes of the present document, the following abbreviations apply:
ACR
Anonymous Communication Rejection
AS
SIP Application Server
CDIV
Communication DIVersion
CONF
CONFerence
CSCF
Call Session Control Function
ECT
Explicit Communication Transfer
GRUU
Globally Routable User agent URI
HOLD
communication HOLD
IETF
Internet Engineering Task Force
IFC
Initial Filter Criteria
ISDN
Integrated Services Digital Network
MCID
Malicious Call IDentification
MGCF
Media Gateway Control Function
MiD
Multi-iDentity
MuD
Multi-Device
OCB
Outgoing Communication Barring
ODB
Operator Determined Barring
OIP
Originating Identification Presentation
OIR
Originating Identification presentation Restriction
PSAP
Public Safety Answering Point
PSTN
Public Switch Telephone Network
S-CSCF
Serving-CSCF
SIP
Session Initiation Protocol
TIP
Terminating Identification Presentation
TIR
Terminating Identification presentation Restriction
UE
User Equipment
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