Content for TS 24.628 Word version: 18.0.0
A Signalling flows for announcements
B Signalling flows for Network Determined User Busy (NDUB)
D AS establishing multiple dialogs with originating UE
E Signalling flows for 3rd party call control
G AS actions using gateway model
$ Change history
A Signalling flows for announcements p. 20
A.1 Providing announcements to a user during the establishment of a communication session p. 20
A.1.1 Providing in-band announcement p. 20
A.1.2 Including Alert-Info header field in the 180 (Ringing) response p. 23
A.1.3 Announcements provided by the PSTN/ISDN p. 24
A.1.4 Announcement provided towards a user connected to the PSTN/ISDN p. 26
A.1.5 Providing in-band announcement after a reliable provisional response has been received by the terminating UE |R9| p. 27
A.2 Providing announcements to a user during an established communication p. 29
A.3 Communication request rejected p. 32
A.3.1 Sending the announcement as in-band information p. 32
A.3.2 Including an Error-Info header field in a 3xx, 4xx, 5xx and 6xx response p. 37
A.3.3 Announcements provided by the PSTN/ISDN p. 39
A.3.4 Announcement provided to a user connected to the PSTN/ISDN p. 39
A.4 Providing announcements to a user during the release of a communication session p. 39
A.5 Providing announcements to a terminating user just after the call is answered and before establishing direct communication session between end users |R10| p. 42
B Signalling flows for Network Determined User Busy (NDUB) p. 47
B.1 Basic call with UE busy with T-AS involvement (NDUB condition check) p. 47
B.2 Busy condition (NDUB) detected by terminating AS p. 48
C (Normative) Void
D (Normative) AS establishing multiple dialogs with originating UE p. 51
D.1 General p. 51
E Signalling flows for 3rd party call control p. 52
F Void
G (Normative) AS actions using gateway model |R13| p. 59
G.1 General p. 59
$ Change history p. 60
