Content for TS 23.283 Word version: 19.0.0
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10.3.2 Information flows for group call over interworking group p. 35
10.3.2.1 General p. 35
The following subclauses define information flows for group calls on the IWF-1 interface. Group call related information flows on reference points other than IWF-1 are defined in TS 23.379.
10.3.2.2 IWF group call request p. 35
Table 10.3.2.2-1 describes the information flow IWF group call request from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID (see NOTE 1) | M | The MCPTT ID of the calling party |
| Functional alias | O | The functional alias of the calling party |
| MCPTT group ID | M | The MCPTT group ID of the interworking group on which the call is initiated |
| SDP offer | M | Media parameters of MCPTT server |
| Implicit floor request (see NOTE 2) | O | Indicates that the originator requests the floor |
| Broadcast indicator | O | Indicates that the group call request is for a broadcast group call |
| Location | O | Location of the calling party |
|
NOTE 1:
If the LMR system does not provide the calling party identity when the group call is originated from the LMR system, then this information element may be set to a MCPTT ID reserved for LMR user at the IWF.
NOTE 2:
This element shall be included only when the originating client requests the floor.
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10.3.2.3 IWF group call response (IWF - MCPTT server) p. 35
Table 10.3.2.3-1 describes the information flow IWF group call response from the MCPTT server to the IWF and from the IWF to MCPTT server.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the target MCPTT group member |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is requested |
| SDP answer | M | Media parameters selected |
10.3.2.4 IWF Group-broadcast group call setup request p. 36
Table 10.3.2.4-1 describes the information flow IWF group-broadcast group call setup request from the MCPTT server to the IWF and from the IWF to the MCPTT server.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID (see NOTE 1) | M | The MCPTT ID of the calling party |
| Functional alias | O | The functional alias of the calling party |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is requested |
| SDP offer | M | Media parameters of MCPTT clients |
| Implicit floor request (see NOTE 2) | O | Indicates that the originating client requests the floor |
| Location | O | Location of the calling party |
|
NOTE 1:
If the LMR system does not provide the calling party identity when the group-broadcast group call setup request is originated from the LMR system, then this information element may be set to a MCPTT ID reserved for the LMR user at the IWF.
NOTE 2:
This element shall be included only when the originating client requests the floor.
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10.3.2.5 IWF Group-broadcast group call setup response p. 36
Table 10.3.2.5-1 describes the information flow IWF group-broadcast group call setup response from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the calling party |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is requested |
| SDP answer | M | Media parameters selected |
10.3.2.6 IWF Group-broadcast group call release request p. 36
Table 10.3.2.6-1 describes the information flow IWF group-broadcast group call release request from the MCPTT server to the IWF and from the IWF to the MCPTT server.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M (see NOTE) | The MCPTT ID of the MCPTT group member |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released |
|
NOTE:
If the LMR system does not provide the calling party identity when the group-broadcast group call release request is originated from the LMR system, then this information element may be set to a MCPTT ID reserved for the LMR user at the IWF.
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10.3.2.7 IWF group-broadcast group call release response p. 37
Table 10.3.2.7-1 describes the information flow IWF group-broadcast group call release request from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the target MCPTT group member |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released |
10.3.2.8 IWF group join request p. 37
Table 10.3.2.8-1 describes the information flow IWF group join request from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the originator of the request. (see NOTE 1) |
| Functional alias | O | The functional alias of the calling party |
| MCPTT group ID | M | The MCPTT group ID of the group to which the group communication is requested |
| SDP offer | M | Media parameters of originator |
| Implicit floor request (see NOTE 2) | O | Indicates that the originating client requests the floor |
|
NOTE 1:
The IWF is configured with an MCPTT ID for use when the IWF is affiliating itself to the group on behalf of the LMR system.
NOTE 2:
This element is included only when the originating client requests the floor.
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10.3.2.9 IWF group join response p. 37
Table 10.3.2.9-1 describes the information flow group join response from the MCPTT server to the IWF and from the IWF to the MCPTT server.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the originator of the request.
(see NOTE) |
| MCPTT group ID | M | The MCPTT group ID of the group to which the group communication is requested |
| SDP answer | M | Media parameters selected |
|
NOTE:
The IWF is configured with an MCPTT ID for use when the IWF is affiliating itself to the group on behalf of the LMR system.
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10.3.2.10 IWF group call leave request p. 38
Table 10.3.2.10-1 describes the information flow IWF group call leave request from the MCPTT server to the IWF and from the IWF to the MCPTT server.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member |
| MCPTT group ID | M | The MCPTT group ID of the group from which the user is leaving |
10.3.2.11 IWF group call leave response p. 38
Table 10.3.2.11-1 describes the information flow IWF group call leave response from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member |
| MCPTT group ID | M | The MCPTT group ID of the group from which the user is leaving |
10.3.2.12 IWF group call release request p. 38
Table 10.3.2.12-1 describes the information flow IWF group call release request from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID
(see NOTE) | O | The MCPTT ID of the initiating MCPTT group member |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released |
| Release reason | O | The reason why the call is released |
|
NOTE:
This IE is not included if the group call release is initiated by the server (e.g. due to timeout).
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10.3.2.13 IWF group call release response p. 39
Table 10.3.2.13-1 describes the information flow IWF group call release response from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the target MCPTT group member |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released |
10.3.2.14 IWF pre-configured regroup request |R16| p. 39
Table 10.3.2.14-1 describes the information flow IWF pre-configured regroup request from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the requester |
| MCPTT group ID | M | MCPTT group ID of the regroup group |
| MCPTT group ID | M | MCPTT group ID of the MCPTT group from which configuration is to be taken |
| MCPTT group ID list | O (see NOTE) | List of MCPTT groups to be regrouped into the pre-configured regroup group |
| MCPTT ID list | O (see NOTE) | List of MCPTT IDs to be regrouped into the pre-configured user regroup group |
|
NOTE:
One and only one of these shall be present.
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10.3.2.15 IWF pre-configured regroup response |R16| p. 39
Table 10.3.2.15-1 describes the information flow IWF pre-configured regroup response from IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the requester of the regrouping operation |
| MCPTT group ID | M | MCPTT group ID of the regroup group |
| Result | M | Result of the regrouping operation |
10.3.2.16 IWF pre-configured regroup cancel request |R16| p. 39
Table 10.3.2.16-1 describes the information flow pre-configured regroup cancel request from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the requester |
| MCPTT group ID | M | MCPTT group ID of the regroup group |
10.3.2.17 IWF pre-configured regroup cancel response |R16| p. 40
Table 10.3.2.17-1 describes the information flow IWF pre-configured regroup cancel response from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the requester of the regroup removal |
| MCPTT group ID | M | MCPTT group ID of the regroup group |
| Result | M | Result of the regroup removal operation |
10.3.2.18 IWF pre-configured regroup reject (IWF - MCPTT server, MCPTT server - IWF) |R16| p. 40
Table 10.3.2.18-1 describes the information flow IWF pre-configured regroup reject from the IWF to the MCPTT server and from the MCPTT server to the IWF.
| Information Element | Status | Description |
|---|---|---|
| MCPTT group ID | M | MCPTT group ID of the regroup group |
| Reject reason | M | Reason for rejecting the regrouping operation |
