A.4 Interrogation for non-supporting MSs

24.0933GPPCompletion of Calls to Busy Subscriber (CCBS)Release 17Stage 3TS

MS A shall send a REGISTER message to the network, with the Facility information element, indicating ProcessUnstructuredSS‑Request. Different MMI is required (as specified in 3GPP TS 22.030) for the two different interrogation operations, although each interrogation operation uses the USSD mechanism to transport the information to the network.

MS A NETWORK
REGISTER
——————————————————————————————————————————–>
Facility (Invoke = ProcessUnstructuredSS-Request (ussd-DataCodingScheme, ussd-String))

RELEASE COMPLETE
<——————————————————————————————————————————–
Facility (Return result = ProcessUnstructuredSS-Request (ussd-DataCodingScheme, ussd-String))

RELEASE COMPLETE
<- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Facility (Return Error (Error))

RELEASE COMPLETE
<- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Facility (Reject (Invoke_Problem))

Figure A.4: Interrogation of all CCBS requests or a single CCBS request for Non supporting MSs

Annex B (informative):
Change history

Change history

Date

Meeting

TDoc

CR

Rev

Cat

Subject/Comment

New version

Apr 1999

Transferred to 3GPP CN1

CN#03

Approved at CN#03

3.0.0

CN#11

Approved at CN#11

4.0.0

CN#16

References updated

4.0.1

CN#16

Rel-5 created after CN#16

5.0.0

CN#26

Rel-6 created after CN#26

6.0.0

CT#36

Upgraded unchanged from Rel-6

7.0.0

CT#42

Upgraded unchanged from Rel-7

8.0.0

2009-12

Update to Rel-9 version (MCC)

9.0.0

2011-03

Update to Rel-10 version (MCC)

10.0.0

2012-09

Update to Rel-11 version (MCC)

11.0.0

2014-09

Update to Rel-12 version (MCC)

12.0.0

2015-12

Update to Rel-13 version (MCC)

13.0.0

2017-03

Update to Rel-14 version (MCC)

14.0.0

2018-06

Update to Rel-15 version (MCC)

15.0.0

2020-07

Update to Rel-16 version (MCC)

16.0.0

2022-03

CT#95e

–

–

–

–

Update to Rel-17 version (MCC)

17.0.0