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

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for a better overview, the Table of Contents (ToC) is reproduced
V15.0.0 (PDF)  2018/06  17 p.
V14.0.0  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.
GSM Rel-98 v7.0.0  1999/06  16 p.
GSM Rel-97 v6.0.0  1998/10  16 p.
GSM Rel-96 v5.1.1  1997/02  17 p.


Rapporteur:  Dr. Swetina, Joerg
See also:

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.