F.3 PS to CS and CS to PS dual radio access transfer
24.2373GPPIP Multimedia (IM) Core Network (CN) subsystem IP Multimedia Subsystem (IMS) service continuityRelease 17Stage 3TS
F.3.1 Key to interpret dual radio access transfer scenarios
The key to interpret the PS-CS dual radio access transfer scenarios given in table F.3.1.1 is specified below:
– "MAM" represents support of MSC server assisted mid-call feature
– "ALP" represents support of PS to CS dual radio access transfer for calls in alerting phase and CS to PS dual radio access transfer for calls in alerting phase
– "PAP" represents support of PS to CS dual radio access transfer for originating calls in pre-alerting phase and CS to PS dual radio access transfer for originating calls in pre-alerting phase
– "CAS" represents a session with active speech media component, which is a confirmed dialog
– "CIS" represents a session with inactive speech media component, which is a confirmed dialog
– "EAS" represents a session with active speech media component in alerting phase
– "EAST" represents a terminating session with active speech media component in alerting phase
– "EASO" represents an originating session with active speech media component in alerting phase
– "EPS" represents a session with active speech media component in pre-alerting phase
– "EPST" represents a terminating session with active speech media component in pre-alerting phase
– "EPSO" represents an originating session with active speech media component in pre-alerting phase
– "CACS" represents a session with active speech media component and with conference control, which is a confirmed dialog
– "CICS" represents a session with inactive speech media component and with conference control, which is a confirmed dialog
– "Transfer CACS as CAS" refers to the behaviour of the UE to transfer CACS, but without conference control
– "Transfer CICS as CIS" refers to the behaviour of the UE to transfer CICS, but without conference control
– The TI value in the "Result in UE" column:
o (TI set by UE) or (TI set by MSC server) indicates that the TI flag and TI value will be set as part of the 3GPP TS 24.008 [8] procedures by either the UE or the MSC server; and
o TI=<value> indicates that the TI flag is assigned as in the terminating mobile case with the TI value according to the <value>.
NOTE: In the CS to PS dual radio access transfer the TI value is not required.
F.3.2 PS to CS dual radio access transfer scenarios
Table F.3.2.1: PS to CS dual radio access transfer scenarios
|
UE and Network Support Combination |
Access Transfer Scenario |
Result in UE |
|
UE supports at least MAM and Network supports MAM only or UE supports MAM only and Network supports at least MAM |
CAS only |
Transfer CAS (TI set by UE) (NOTE 4) |
|
CIS only |
Transfer CIS (TI set by UE) |
|
|
EAS only |
Release EAS |
|
|
EPS only |
Release EPS |
|
|
CAS + CIS |
Transfer CAS (TI set by UE) and transfer CIS (TI=1) |
|
|
CAS + EASO |
Transfer CAS (TI set by UE) and release EASO |
|
|
CAS + EPSO |
Transfer CAS (TI set by UE) and release EPSO |
|
|
CAS + EAST |
Transfer CAS (TI set by UE) and release EAST |
|
|
CAS + EPST |
Transfer CAS (TI set by UE) and release EPST |
|
|
CIS + EASO |
Transfer CIS (TI set by UE) and release EASO |
|
|
CIS + EAST |
Transfer CIS (TI set by UE) and release EAST |
|
|
CIS + EPSO |
Transfer CIS (TI set by UE) and release EPSO |
|
|
CAS + CIS + EAST |
Transfer CAS (TI set by UE), transfer CIS (TI=1) and release EAST |
|
|
CAS + CIS + EPST |
Transfer CAS (TI set by UE), transfer CIS (TI=1) and release EPST |
|
|
UE supports ALP only and Network supports at least ALP or UE supports at least ALP and network supports ALP only |
CAS only |
Transfer CAS (TI set by UE) (NOTE 4) |
|
CIS only |
Release CIS |
|
|
EASO only |
Transfer EASO (TI set by UE) |
|
|
EAST only |
Transfer EASO (TI set by MSC server) (NOTE 4) |
|
|
EPS only |
Release EPS |
|
|
CAS + CIS |
Transfer CAS (TI set by UE) and release CIS |
|
|
CAS + EASO |
Transfer CAS (TI set by UE) and release EASO (NOTE 1) |
|
|
CAS + EASP |
Transfer CAS (TI set by UE) and release EPSO |
|
|
CAS + EAST |
Transfer CAS (TI set by UE) and transfer EAST (TI set by MSC server) (NOTE 4) |
|
|
CAS + EPST |
Transfer CAS (TI set by UE) and release EPST |
|
|
CIS + EASO |
Transfer EASO (TI set by UE) and release CIS |
|
|
CIS + EAST |
Transfer EAST (TI set by UE) and release CIS |
|
|
CIS + EPSO |
Release CIS and release EPSO |
|
|
CAS + CIS + EAST |
Transfer CAS (TI set by UE), transfer EAST (TI set by MSC server) and release CIS |
|
|
CAS + CIS + EPST |
Transfer CAS (TI set by UE), release CIS released and release EPST |
|
|
UE supports ALP+PAP only and Network supports at least ALP+PAP or UE supports at least ALP+PAP and Network supports ALP+PAP only |
CAS only |
Transfer CAS (TI set by UE) (NOTE 4) |
|
CIS only |
Release CIS |
|
|
EAS only |
Transfer EAS (TI set by UE) |
|
|
EPSO only |
Transfer EPSO (TI set by UE) |
|
|
EPST only |
Release EPST |
|
|
CAS + CIS |
Transfer CAS (TI set by UE) and release CIS |
|
|
CAS + EASO |
Transfer CAS and release EASO (NOTE 1) |
|
|
CAS + EPSO |
Transfer CAS and release EPSO (NOTE 2) |
|
|
CAS + EAST |
Transfer CAS (TI set by UE) and transfer EAST (TI set by MSC server) (NOTE 4) |
|
|
CAS + EPST |
Transfer CAS (TI set by UE) and release EPST |
|
|
CIS + EASO |
Transfer EASO (TI set by UE) and release CIS |
|
|
CIS + EAST |
Transfer EAST (TI set by UE) and release CIS |
|
|
CIS + EPSO |
Transfer EPSO (TI set by UE) and release CIS |
|
|
CAS + CIS + EAST |
Transfer CAS (TI set by UE), transfer EAST (TI=1) and release CIS |
|
|
CAS + CIS + EPST |
Transfer CAS (TI set by UE), release CIS and release EPST |
|
|
UE and Network support MAM+ALP+PAP |
CAS only |
Transfer CAS (TI set by UE) (NOTE 4) |
|
CIS only |
Transfer CIS (TI set by UE) |
|
|
EAS only |
Transfer EAS (TI set by UE) |
|
|
EPSO only |
Transfer EPSO (TI set by UE) (NOTE 4) |
|
|
EPST only |
Release EPST |
|
|
CAS + CIS |
Transfer CAS (TI set by UE) and transfer CIS (TI=1) |
|
|
CAS + EASO |
Transfer CAS and release EASO (NOTE 1) |
|
|
CAS + EPSO |
Transfer CAS and release EPSO (NOTE 2) |
|
|
CAS + EAST |
Transfer CAS (TI set by UE) and transfer EAST (TI set by MSC server) |
|
|
CAS + EPST |
Transfer CAS (TI set by UE) and release EPST |
|
|
CIS + EASO |
Transfer CIS (TI set by UE) and transfer EASO (TI=1) |
|
|
CIS + EAST |
Transfer CIS (TI set by UE) and transfer EAST (TI=1) |
|
|
CIS + EPSO |
Transfer CIS (TI set by UE) and transfer EPSO (TI=1) |
|
|
CAS + CIS + EAST |
Transfer CAS (TI set by UE), transfer CIS (TI=1) and release EAST (NOTE 3) |
|
|
CAS + CIS + EPST |
Transfer CAS (TI set by UE), transfer CIS (TI set by MSC server) and release EPST |
|
|
UE supports MAM+ ALP only and Network supports at least MAM+ALP or UE supports at least MAM+ ALP and Network supports MAM+ALP only |
CAS only |
Transfer CAS (TI set by UE) (NOTE 4) |
|
CIS only |
Transfer CIS (TI set by UE) |
|
|
EAS only |
Transfer EAS (TI set by UE) |
|
|
EPS only |
Release EPS |
|
|
CAS + CIS |
Transfer CAS (TI set by UE) and transfer CIS (TI=1) |
|
|
CAS + EASO |
Transfer CAS and release EASO (NOTE 1) |
|
|
CAS + EASP |
Transfer CAS and release EPSO |
|
|
CAS + EAST |
Transfer CAS (TI set by UE) and transfer EAST (TI set by MSC server) |
|
|
CAS + EPST |
Transfer CAS (TI set by UE) and release EPST |
|
|
CIS + EASO |
Transfer CIS (TI set by UE) and transfer EASO (TI=1) |
|
|
CIS + EAST |
Transfer CIS (TI set by UE) and transfer EAST (TI=1) |
|
|
CIS + EPSO |
Transfer CIS (TI set by UE) and release EPSO |
|
|
CAS + CIS + EAST |
Transfer CAS (TI set by UE), transfer CIS (TI=1) and release EAST (NOTE 3) |
|
|
CAS + CIS + EPST |
Transfer CAS (TI set by UE), Transfer CIS (TI=1) and release EPST |
|
|
UE has no MAM support and Network supports MAM only or UE supports MAM only and Network has no MAM support |
CAS only |
Transfer CAS (TI set by UE) (NOTE 4) |
|
CIS only |
Release CIS |
|
|
EAS only |
Release CIS |
|
|
EPS only |
Release CIS |
|
|
CAS + CIS |
Transfer CAS (TI set by UE) and release CIS |
|
|
CAS + EAST |
Transfer CAS (TI set by UE) and release EAST |
|
|
CAS + EPST |
Transfer CAS (TI set by UE) and release EPST |
|
|
CIS + EASO |
Release CIS and release EASO |
|
|
CIS + EAST |
Release CIS and release EAST |
|
|
CIS + EPSO |
Release CIS and release EPSO |
|
|
CAS + CIS + EAST |
Transfer CAS (TI set by UE), release CIS and release EAST |
|
|
CAS + CIS + EPST |
Transfer CAS (TI set by UE), release CIS and release EPST |
|
|
NOTE 1: Even though the nework and the UE support transfer of EASO, the EASO is released since the combination CAS and EASO cannot occur in CS. NOTE 2: Even though the nework and the UE support transfer of EPSO, the EPSO is released since the combination CAS and EPSO cannot occur in CS. NOTE 3: Even though the UE and network can support the transfer of EAST, the UE will only transfer CAS and CIS and will release EAST since only two calls can be transferred to CS. NOTE 4: Transfer of CAS, EAST or CAS+EAST do not require a MSC server with a direct SIP interface to IMS. |
||
F.3.3 CS to PS dual radio access transfer scenarios
Table F.3.3.1: CS to PS dual radio access transfer scenarios
|
UE and Network Support Combination (NOTE) |
Access Transfer Scenario |
Result in UE |
|
UE supports at least MAM and Network supports MAM only or UE supports MAM only and Network supports at least MAM |
CAS only |
Transfer CAS |
|
CIS only |
Transfer CIS |
|
|
EAS only |
Release EAS |
|
|
EPS only |
Release EPS |
|
|
CAS + CIS |
Transfer CAS and transfer CIS |
|
|
CAS + EAST |
Transfer CAS and release EAST |
|
|
CAS + EPST |
Transfer CAS and transfer EPST |
|
|
CIS + EASO |
Transfer CIS and release EASO |
|
|
CIS + EAST |
Transfer CIS and release EAST |
|
|
CIS + EPSO |
Transfer CIS and release EPSO |
|
|
UE supports ALP only and Network supports at least ALP or UE supports at least ALP and network supports ALP only |
CAS only |
Transfer CAS |
|
CIS only |
Release CIS |
|
|
EAS only |
Transfer EAS |
|
|
EPS only |
Release EPS |
|
|
CAS + CIS |
Transfer CAS and release CIS |
|
|
CAS + EAST |
Transfer CAS and transfer EAST |
|
|
CAS + EPST |
Transfer CAS and release EPST |
|
|
CIS + EASO |
Transfer EASO and release CIS |
|
|
CIS + EAST |
Transfer EAST and release CIS |
|
|
CIS + EPSO |
CIS released by UE and release EPSO |
|
|
UE supports ALP+PAP only and Network supports at least ALP+PAP or UE supports at least ALP+PAP and Network supports ALP+PAP only |
CAS only |
Transfer CAS |
|
CIS only |
Release CIS |
|
|
EAS only |
Transfer EAS |
|
|
EPSO only |
Transfer EPSO |
|
|
EPST only |
Release EPST |
|
|
CAS + CIS |
Transfer CAS and release CIS |
|
|
CAS + EAST |
Transfer CAS and transfer EAST |
|
|
CAS + EPST |
Transfer CAS and release EPST |
|
|
CIS + EASO |
Transfer EASO and release CIS |
|
|
CIS + EAST |
Transfer EAST and release CIS |
|
|
CIS + EPSO |
Transfer EPSO and release CIS |
|
|
UE and Network support MAM+ALP+PAP |
CAS only |
Transfer CAS |
|
CIS only |
Transfer CIS |
|
|
EAS only |
Transfer EAS |
|
|
EPSO only |
Transfer EPSO |
|
|
EPST only |
Release EPST |
|
|
CAS + CIS |
Transfer CAS and transfer CIS |
|
|
CAS + EAST |
Transfer CAS and transfer EAST |
|
|
CAS + EPST |
Transfer CAS and release EPST |
|
|
CIS + EASO |
Transfer CIS and transfer EASO |
|
|
CIS + EAST |
Transfer CIS and transfer EAST |
|
|
CIS + EPSO |
Transfer CIS and transfer EPSO |
|
|
UE supports MAM+ ALP only and Network supports at least MAM+ALP or UE supports at least MAM+ ALP and Network supports MAM+ALP only |
CAS only |
Transfer CAS |
|
CIS only |
Transfer CIS |
|
|
EAS only |
Transfer EAS |
|
|
EPS only |
Release EPS |
|
|
CAS + CIS |
Transfer CAS and transfer CIS |
|
|
CAS + EAST |
Transfer CAS and transfer EAST |
|
|
CAS + EPST |
Transfer CAS and release EPST |
|
|
CIS + EASO |
Transfer CIS and transfer EASO |
|
|
CIS + EAST |
Transfer CIS and transfer EAST |
|
|
CIS + EPSO |
Transfer CIS and release EPSO |
|
|
UE has no MAM support and Network supports MAM only or UE supports MAM only and Network has no MAM support |
CAS only |
Transfer CAS |
|
CIS only |
Release CIS |
|
|
EAS only |
Release CIS |
|
|
EPS only |
Release CIS |
|
|
CAS + CIS |
Transfer CAS and release CIS |
|
|
CAS + EAST |
Transfer CAS and release EAST |
|
|
CAS + EPST |
Transfer CAS and release EPST |
|
|
CIS + EASO |
Release CIS and release EASO |
|
|
CIS + EAST |
Release CIS and release EAST |
|
|
CIS + EPSO |
Release CIS and release EASO |
|
|
NOTE: None of the CS to PS dual radio access transfer scenarios requires an MSC server with a direct SIP interface to IMS. |
||
F.3.4 PS to CS dual access transfer scenarios with conference control
Table F.3.4-1 describes PS to CS dual radio access transfer scenarios considering cases when at least one potential session to transfer is a conference initiated by the UE.
Table F.3.4-1: PS to CS dual radio access transfer scenarios with conference control
|
UE and Network Support Combination |
Access Transfer Scenario |
Result in UE |
|
UE supports at least MAM and Network supports MAM only or UE supports MAM only and Network supports at least MAM |
CACS only |
Transfer CACS (NOTE 1). |
|
CICS only |
Transfer CICS (NOTE 1). |
|
|
CACS + CIS |
Transfer CACS (NOTE 1) and transfer CIS (TI=1). |
|
|
CAS + CICS |
Transfer CAS (TI set by UE) and transfer CICS (NOTE 2). |
|
|
CACS + EAST |
Transfer CACS (NOTE 1) and release EAST. |
|
|
CACS + EPST |
Transfer CACS (NOTE 1) and release EPST. |
|
|
CICS + EASO |
Transfer CICS (NOTE 1) and release EASO. |
|
|
CICS + EPSO |
Transfer CICS (NOTE 1) and release EPSO. |
|
|
CACS + CIS + EAST |
Transfer CACS (NOTE 1), transfer CIS (TI=1) and release EAST. |
|
|
CAS + CICS + EAST |
Transfer CAS (TI set by UE), transfer CICS (NOTE 2) and release EAST. |
|
|
CACS + CIS + EPST |
Transfer CACS (NOTE 1), transfer CIS (TI=1) and release EPST. |
|
|
CAS + CICS + EPST |
Transfer CAS (TI set by UE) transfer CICS (NOTE 2) and release EPST. |
|
|
CACS + CICS |
Transfer CACS (NOTE 1) and transfer CICS as CIS (TI=1). |
|
|
CACS + CICS + EAST |
Transfer CACS (NOTE 1), transfer CICS as CIS (TI=1) and release EAST. |
|
|
CACS + CICS + EPST |
Transfer CACS (NOTE 1), transfer CICS as CIS (TI=1) and release EPST. |
|
|
UE supports ALP only and Network supports at least ALP or UE supports at least ALP and network supports ALP only |
CACS only |
Transfer CACS as CAS (TI set by UE). |
|
CICS only |
Release CICS. |
|
|
CACS + CIS |
Transfer CACS as CAS (TI set by UE) and release CIS. |
|
|
CAS + CICS |
Transfer CAS (TI set by UE) and release CICS. |
|
|
CACS + EAST |
Transfer CACS as CAS (TI set by UE) and release EAST. |
|
|
CACS + EPST |
Transfer CACS as CAS (TI set by UE) and release EPST. |
|
|
CICS + EASO |
Transfer EASO (TI set by UE) and release CICS |
|
|
CICS + EPSO |
Release CICS and release EPSO. |
|
|
CACS + CIS + EAST |
Transfer CACS as CAS (TI set by UE), transfer EAST (TEI=1) and release CIS. |
|
|
CAS + CICS + EAST |
Transfer CAS (TI=0), transfer EAST (TI=1) and release CICS. |
|
|
CACS + CIS + EPST |
Transfer CACS as CAS (TI set by UE), release CIS and release EPST. |
|
|
CAS + CICS + EPST |
Transfer CAS (TI set by UE), release CICS and release EPST. |
|
|
CACS + CICS |
Transfer CACS as CAS (TI set by UE) and release CICS. |
|
|
CACS + CICS + EAST |
Transfer CACS as CAS (TI set by UE), transfer EAST and release CICS. |
|
|
CACS + CICS + EPST |
Transfer CACS as CAS (TI set by UE), release CICS and release EPST. |
|
|
UE supports ALP+PAP only and Network supports at least ALP+PAP or UE supports at least ALP+PAP and Network supports ALP+PAP only |
CACS only |
Transfer CACS as CAS (TI set by UE). |
|
CICS only |
Release CICS. |
|
|
CACS + CIS |
Transfer CACS as CAS (TI set by UE) and release CIS. |
|
|
CAS + CICS |
Transfer CAS (TI set by UE) and release CICS. |
|
|
CACS + EAST |
Transfer CACS as CAS (TI set by UE) and transfer EAST (TI=1). |
|
|
CACS + EPST |
Transfer CACS as CAS (TI set by UE) and release EPST. |
|
|
CICS + EASO |
Transfer EASO (TI set by UE) and release CICS. |
|
|
CICS + EPSO |
Transfer EPSO (TI set by UE) and release CICS. |
|
|
CACS + CIS + EAST |
Transfer CACS as CAS (TI set by UE), release CIS and release EAST. |
|
|
CAS + CICS + EAST |
Transfer CAS (TI set by UE), transfer EAST (TI=1) and release CICS. |
|
|
CACS + CIS + EPST |
Transfer CACS as CAS (TI set by UE), release CIS and release EPST. |
|
|
CAS + CICS + EPST |
Transfer CAS (TI=0), release CICS and release EPST. |
|
|
CACS + CICS |
Transfer CACS as CAS (TI set by UE) and release CICS. |
|
|
CACS + CICS + EAST |
Transfer CACS as CAS (TI set by UE), transfer EAST (TI=1) and release CICS. |
|
|
CACS + CICS + EPST |
Transfer CACS as CAS (TI set by UE), release CICS and release EPST. |
|
|
UE and Network support MAM+ALP+PAP |
CACS only |
Transfer CACS (NOTE 1). |
|
CICS only |
Transfer CICS (NOTE 1). |
|
|
CACS + CIS |
Transfer CACS (NOTE 1) and transfer CIS (TI=1). |
|
|
CAS + CICS |
Transfer CAS (TI set by UE) and transfer CICS (NOTE 2). |
|
|
CACS + EAST |
Transfer CACS (NOTE 1) and transfer EAST (TI=1). |
|
|
CACS + EPST |
Transfer CACS (NOTE 1) and release EPST. |
|
|
CICS + EASO |
Transfer CICS (NOTE 1) and transfer EASO (TI=1). |
|
|
CICS + EPSO |
Transfer CICS (NOTE 1) and transfer EPSO (TI=1). |
|
|
CACS + CIS + EAST |
Transfer CACS (NOTE 1), transfer CIS (TI=1) and release EAST. |
|
|
CAS + CICS + EAST |
Transfer CAS (TI set by UE), transfer CICS (NOTE 2) and release EAST. |
|
|
CACS + CIS + EPST |
Transfer CACS (NOTE 1), transfer CIS (TI=1) and release EPST |
|
|
CAS + CICS + EPST |
Transfer CAS (TI set by UE), transfer CICS (NOTE 2) and release EPST. |
|
|
CACS + CICS |
Transfer CACS (NOTE 1), transfer CICS as CIS (TEI=1) |
|
|
CACS + CICS + EAST |
Transfer CACS (NOTE 1), transfer CICS as CIS (TEI=1) and release EAST. |
|
|
CACS + CICS + EPST |
Transfer CACS (NOTE 1), transfer CICS as CIS (TEI=1) and release EPST. |
|
|
UE supports MAM+ ALP only and Network supports at least MAM+ALP or UE supports at least MAM+ ALP and Network supports MAM+ALP only |
CACS only |
Transfer CACS (NOTE 1). |
|
CICS only |
Transfer CICS (NOTE 1). |
|
|
CACS + CIS |
Transfer CACS (NOTE 1) and transfer CIS (TI=1). |
|
|
CAS + CICS |
Transfer CAS (TI set by UE) and transfer CICS (NOTE 2). |
|
|
CACS + EAST |
Transfer CACS (NOTE 1) and transfer EAST (TI=1). |
|
|
CACS + EPST |
Transfer CACS (NOTE 1) and release EPST. |
|
|
CICS + EASO |
Transfer CICS (NOTE 1) and transfer EASO (TI=1). |
|
|
CICS + EPSO |
Transfer CICS (NOTE 1) and release EPSO. |
|
|
CACS + CIS + EAST |
Transfer CACS (NOTE 1), transfer CIS (TI=1) and release EAST. |
|
|
CAS + CICS + EAST |
Transfer CAS (TI=0), transfer CICS (NOTE 2) and release EAST. |
|
|
CACS + CIS + EPST |
Transfer CACS (NOTE 1), transfer CIS (TI=1) and release EPST. |
|
|
CAS + CICS + EPST |
Transfer CAS (TI set by UE), transfer CICS (NOTE 2) and release EAST. |
|
|
CACS + CICS |
Transfer CACS (NOTE 1) and transfer CICS as CIS (TEI=1). |
|
|
CACS + CICS + EAST |
Transfer CACS (NOTE 1), transfer CICS as CIS (TEI=1) and release EAST. |
|
|
CACS + CICS + EPST |
Transfer CACS (NOTE 1), transfer CICS as CIS (TEI=1) and release EPST. |
|
|
UE has no MAM support and Network supports MAM only or UE supports MAM only and Network has no MAM support |
CACS only |
Transfer CACS as CAS (TI set by UE). |
|
CICS only |
Release CIS. |
|
|
CACS + CIS |
Transfer CACS as CAS (TI set by UE) and release CIS. |
|
|
CAS + CICS |
Transfer CAS (TI set by UE) and release CICS. |
|
|
CACS + EAST |
Transfer CACS as CAS (TI set by UE) and release EAST. |
|
|
CACS + EPST |
Transfer CACS as CAS (TI set by UE) and release EPST. |
|
|
CICS + EASO |
Release CICS and release EASO. |
|
|
CICS + EPSO |
Release CICS and release EPSO. |
|
|
CACS + CIS + EAST |
Transfer CACS as CAS (TI set by UE) and release EAST. |
|
|
CAS + CICS + EAST |
Transfer CAS (TI set by UE), release CICS and release EAST. |
|
|
CACS + CIS + EPST |
Transfer CACS as CAS (TI set by UE), release CIS and release EPST. |
|
|
CAS + CICS + EPST |
Transfer CAS (TI set by UE), release CICS and release EAST. |
|
|
CACS + CICS |
Transfer CACS as CAS (TI set by UE) and release CICS. |
|
|
CACS + CICS + EAST |
Transfer CACS as CAS (TI set by UE), release CICS and release EAST. |
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CACS + CICS + EPST |
Transfer CACS as CAS (TI set by UE), release CICS and release EAST. |
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NOTE 1: The TI value for the conference is assigned by 3GPP TS 24.008 [8] procedures. TIs are calculated as in the table 9.2.1A-2 with the offsets 0, 2, 3, 4, 5 assigned to the participants in their order in the list of the extracted participants. The transaction identifier of the conference is identical to the transaction identifier assigned to the first participant (offset 0). NOTE 2: TIs for participants are calculated as in the table 9.2.1A-2 with the offsets 0, 1, 2, 3, 4 assigned to the participants in their order in the list of the extracted participants. The transaction identifier of the conference is identical to the transaction identifier assigned to the first participant (offset 0). |
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Annex G (informative):
Indication of support for access transfer features