A.5 Annexes

22.0913GPPExplicit Call Transfer (ECT) supplementary serviceStage 1TS

Annex A is missing in the ISDN specification.

Annex B (normative):
Cross Phase compatibility

As a operator option it is possible to support also the invocation of ECT by using Unstructured Supplementary Service Data (USSD).

The USSD string used should be the same as the standardised MMI code (4 SEND) for ECT.

The network shall send an indication towards the user if ECT was invoked successfully or unsuccessfully, though the mechanism for this indication is not specified.

If a remote party uses a non-ECT mobile station they may not receive the ECT notification.

Annex C (informative):
Change history

Change history

TSG SA#

SA Doc.

SA1 Doc

Spec

CR

Rev

Rel

Cat

Subject/Comment

Old

New

Work Item

Jun 1999

GSM 

02.91

Transferred to 3GPP SA1

7.0.0

SA#04

22.091

R99

3.0.0

SP-05

SP-99479

S1-99637

22.091

001

R99

D

Editorial changes for alignment

3.0.0

3.0.1

SP-09

SP-000377

S1-000587

22.091

002

R99

F

CR on CLI presentation modifications

3.0.1

3.1.0

SP-11

SP-010065

S1-010258

22.091

Rel-4

Transferred to 3GPP Release 4

3.1.0

4.0.0

SP-16

SP-020267

S1-021043

22.091

Rel-5

Updated from Rel-4 to Rel5

4.0.0

5.0.0

SP-26

SP-040744

S1-040997

22.091

Rel-6

Updated from Rel-5 to Rel-6

5.0.0

6.0.0

SP-36

22.091

Rel-7

Updated from Rel-6 to Rel-7

6.0.0

7.0.0

SP-42

–

–

Rel-8

Updated from Rel-7 to Rel-8

7.0.0

8.0.0

SP-46

–

–

–

–

–

–

–

Updated to Rel-9 by MCC

8.0.0

9.0.0

2011-03

–

–

–

–

–

–

–

Update to Rel-10 version (MCC)

9.0.0

10.0.0

2012-09

–

–

–

–

–

–

–

Updated to Rel-11 by MCC

10.0.0

11.0.0

2014-10

–

–

–

–

–

–

–

Update to Rel-12 version (MCC)

11.0.0

12.0.0

2015-12

–

–

–

–

–

–

–

Updated to Rel-13 by MCC

12.0.0

13.0.0

2017-03

–

–

–

–

–

–

–

Updated to Rel-14 by MCC

13.0.0

14.0.0

2018-06

–

–

–

–

–

–

–

Updated to Rel-15 by MCC

14.0.0

15.0.0

SA#88e

–

–

–

–

–

–

–

Updated to Rel-16 by MCC

15.0.0

16.0.0

2022-03

–

–

–

–

–

–

–

Updated to Rel-17 by MCC

16.0.0

17.0.0