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TS 22.091 (SA1)
Explicit Call Transfer (ECT) supplementary service – Stage 1

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V14.0.0 (PDF)    2017/03    17 p.
V13.0.0    2015/12    17 p.
V12.0.0    2014/10    17 p.
V11.0.0    2012/09    17 p.
V10.0.0    2011/04    17 p.
V9.0.0    2009/12    17 p.
V8.0.0    2009/01    17 p.
V7.0.0    2007/06    17 p.
V6.0.0    2004/12    17 p.
V5.0.0    2002/07    17 p.
V4.0.0    2001/04    17 p.
V3.1.0    2000/10    17 p.

Rapporteur:  Dr. Swetina, Joerg
Antecedent:  TS 02.91    
See also:  ECT-related TS/TR    

This TS specifies the stage 1 description of Explicit Call Transfer (ECT) from the service subscriber's and user's points of view, in particular:
  • the procedures for normal operation with successful outcome;
  • the action to be taken in exceptional circumstances;
  • the interaction with other supplementary services.
This TS does not deal with the Man-Machine Interface (MMI) requirements, but makes reference to the appropriate Technical Specifications. The charging principles applied to ECT are established in this TS in terms of the charging information required to be collected. Any subsequent charging implications are outside of the scope of this TS. Any interactions with other networks not dealt with in Clause 9 are outside the scope of this TS.


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1 Scope    2 References    3 Definitions and abbreviations    3.1 Definitions    3.2 Abbreviations    4 Description    4.1 Applicability to telecommunication services    5 Normal operation with successful outcome    5.1 Provision    5.2 Withdrawal    5.3 Registration    5.4 Erasure    5.5 Activation    5.6 Deactivation    5.7 Invocation    5.8 Normal operation    5.9 Interrogation    5.10 Charging requirements    6 Exception procedures or unsuccessful outcome    7 Alternate procedures    8 Interaction with other supplementary services    8.1 Calling Line Identification Presentation (CLIP)    8.2 Calling Line Identification Restriction (CLIR)    8.3 Connected Line Identification Presentation (COLP)    8.4 Connected Line Identification Restriction (COLR)    8.5 Call Forwarding Unconditional (CFU)    8.6 Call Forwarding on mobile subscriber Busy (CFB)    8.7 Call Forwarding on No Reply (CFNRy)    8.8 Call Forwarding on mobile subscriber Not Reachable (CFNRc)    8.9 Call Waiting (CW)    8.10 Call Hold (HOLD)    8.11 Multi-party (MPTY) service    8.12 Closed User Group (CUG)    8.13 Advice of Charge (AoC)    8.14 Barring of All Outgoing Calls (BAOC)    8.15 Barring of all Outgoing International Calls (BOIC)    8.16 Barring of all Outgoing International Calls except those direct to the Home PLMN Country (BOICexHC)    8.17 Barring of All Incoming Calls (BAIC)    8.18 Barring of Incoming Calls when roaming outside the home PLMN country (BIC-Roam)    8.19 Call Transfer (CT)    9 Interworking considerations    A Deviations of PLMN ECT to the ISDN specifications of ECT    A.1 Subclause 4.1 Applicability to telecommunication services    A.2 Subclause 5.8 Normal operation    A.3 Subclause 6 Exception procedures or unsuccessful outcome    A.4 Subclause 8.6 and 8.7    A.5 Annexes    B [N] Cross Phase compatibility    C Change history   


1   Scope   PDF-p. 6
2   References
3   Definitions and abbreviations
4   Description
5   Normal operation with successful outcome
6   Exception procedures or unsuccessful outcome
7   Alternate procedures
8   Interaction with other supplementary services      Up
9   Interworking considerations      Up
A   Deviations of PLMN ECT to the ISDN specifications of ECT   PDF-p. 13
B  (Normative)   Cross Phase compatibility   PDF-p. 14
C   Change history   PDF-p. 15

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