C.2 Example of A REFER’s B to C

24.5293GPPProtocol specificationPSTN/ISDN simulation services: Explicit Communication Transfer (ECT)Release 8TISPANTS

This scenario is added to show that the solution presented in the present document is able to support classical charging models. Assumption in this scenario is that A originated the original call and is thus charged for initial A-B communication.

Figure C.2: Example of a REFER’s B to C

Table C.2

Initial Session Initiated By	Initial Session A-B	Transferred Session Transfer Target C
A=Transferee	Transferee (A): A-B	Transferee (A): A-B Transferor (B): B-C
A=Transferor	Transferor (A): A-B	Transferor (A): A-B Transferor (A): A-C

Annex D (informative):
Bibliography

ETSI ETS 300 367: "Integrated Services Digital Network (ISDN); Explicit Call transfer (ECT) supplementary service; Service description".

ETSI TS 181 002: "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Multimedia Telephony with PSTN/ISDN simulation services".

ETSI TS 181 006: "Service and Capabilities Requirements for TISPAN NGN; Release 1".

Annex E (informative):
Change history

TISPAN #	TISPAN Doc.	CR	Subject/Comment
13bis	13bTD183r2	001
13bis	13bTD185r2	002
13ter	13tTD058r1	003
13ter	13tTD059r1	004
14bis	14bTD157r1	005
14ter	14tTD376r1	006	Amendments on ECT
14ter	14tTD377r1	007	Clarifications on Transferor AS
14ter	14tTD378r1	008
14ter	14tTD379r1	009
14ter	14tTD380r1	010
15bis	15bTD109r4	011
15bis	15bTD274r2	012
15bis	15bT275r4	013
WG3	WG3TD075r5	014
WG3	WG3TD120r1	015

Change history
Date	TSG #	TSG Doc.	CR	Rev	Subject/Comment	Old	New
2008-01					Publication as ETSI TS 183 029		2.5.0
2008-01					Conversion to 3GPP TS 24.529		2.5.1
2008-03	CT#39	CP-080098			Based on the decision in CT#39 version 8.0.0 created by MCC.	2.5.1	8.0.0
2009-06	CT#44	CP-090407	0001		Clarification of ECT interaction with CONF	8.0.0	8.1.0
2012-12	CT#58	CP-120778	0002	2	Emergency call ECT suppression	8.1.0	8.2.0