Content for TS 23.379 Word version: 19.5.0
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10.6 Group call
10.6.1 General
10.6.2 On-network group call
10.6.2.1 General
10.6.2.2 Information flows for group call in on-network
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10.6 Group call p. 35
10.6.1 General p. 35
Group calls are enabled in both on-network and off-network.
10.6.2 On-network group call p. 35
10.6.2.1 General p. 35
This subclause contains procedures for group call across a single and multiple MCPTT servers, and associated functions such as emergency call, broadcast call and others.
Two variations of group call model are described in subclause 10.6.2.3, the pre-arranged group call and the chat group call. Each of the subsequent group call types in subclause 10.6.2.4 onwards are applicable to either call model.
10.6.2.2 Information flows for group call in on-network p. 36
10.6.2.2.1 MCPTT emergency group call request p. 36
Table 10.6.2.2.1-1 describes the information flow MCPTT emergency group call request from the MCPTT client to the MCPTT server, from the MCPTT server to the group host MCPTT server, and from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The identity of the calling party. |
| Functional alias | O | The functional alias of the calling party. |
| MCPTT group ID | M | The MCPTT group ID on which the call is to be conducted. |
| Emergency indicator | M | Indicates that the group call request is an MCPTT emergency call. |
| Alert indicator | O | Indicates whether an emergency alert is to be sent. |
| Implicit floor request (see NOTE) | O | Indicates that the originating client requests the floor. |
| Requested priority | O | Priority level requested for the call. |
| Location | O | Location of the calling party. |
|
NOTE:
This information element shall be included only when this information flow is from the client to the MCPTT server or from the MCPTT server to the group host MCPTT server and the originating client requests the floor.
|
||
10.6.2.2.1a MCPTT emergency group call response p. 36
Table 10.6.2.2.1a-1 describes the information flow MCPTT emergency group call response from the MCPTT client to the MCPTT server, from the MCPTT server to the MCPTT server, and from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The identity of the calling party. |
| MCPTT group ID | M | The MCPTT group ID on which the call is to be conducted. |
| Result | M | Result of the MCPTT emergency group call request (success or failure). |
10.6.2.2.2 MCPTT in-progress emergency group state cancel request p. 36
Table 10.6.2.2.2-1 describes the information flow MCPTT in-progress emergency group state cancel request from the MCPTT client to the MCPTT server, from the MCPTT server to the MCPTT server and from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The identity of the cancelling party. |
| MCPTT group ID | M | The MCPTT group ID on which the MCPTT in-progress emergency state is to be cancelled. |
| Alert indicator | O | Indicates whether the emergency alert of the cancelling party is to be cancelled. |
10.6.2.2.2a MCPTT in-progress emergency group state cancel response p. 37
Table 10.6.2.2.2a-1 describes the information flow MCPTT in-progress emergency group state cancel response from the MCPTT server to the MCPTT client, from the MCPTT server to the MCPTT server and from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The identity of the cancelling party. |
| MCPTT group ID | M | The MCPTT group ID on which the MCPTT in-progress emergency in-progress is to be cancelled. |
| Result | M | Result of the MCPTT in-progress emergency group state cancel request (success or failure). |
10.6.2.2.3 Void
10.6.2.2.3a Void
10.6.2.2.3b Void
10.6.2.2.4 Void
10.6.2.2.4a Void
10.6.2.2.5 MCPTT imminent peril group call request p. 37
Table 10.6.2.2.5-1 describes the information flow MCPTT imminent peril group call request from the MCPTT client to the MCPTT server, from the MCPTT server to the group host MCPTT server, and from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The identity of the calling party. |
| Functional alias | O | The functional alias of the calling party. |
| MCPTT group ID | M | The MCPTT group ID on which the call is to be conducted. |
| Imminent peril indicator | M | Indicates that the group call request is an imminent peril call. |
| Implicit floor request (see NOTE) | O | Indicates that the originating client requests the floor. |
| Requested priority | O | Priority level requested for the call. |
| Location | O | Location of the calling party. |
|
NOTE:
This information element shall be included only when this information flow is from the client to the MCPTT server or from the MCPTT server to the group host MCPTT server and the originating client requests the floor.
|
||
10.6.2.2.5a MCPTT imminent peril group call response p. 38
Table 10.6.2.2.5a-1 describes the information flow MCPTT imminent peril group call response from the MCPTT client to the MCPTT server, from the MCPTT server to the MCPTT server, and from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The identity of the calling party. |
| MCPTT group ID | M | The MCPTT group ID on which the call is to be conducted. |
| Result | M | Result of the MCPTT imminent peril group call request (success or failure). |
10.6.2.2.6 MCPTT in-progress imminent peril group state cancel request p. 38
Table 10.6.2.2.6-1 describes the information flow MCPTT in-progress imminent peril group state cancel request from the MCPTT client to the MCPTT server, from the MCPTT server to the MCPTT server, and from the MCPTT server to the MCPTT client.
Table 10.6.2.2.6-1: MCPTT in-progress imminent peril group state cancel request information elements
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The identity of the cancelling party. |
| MCPTT group ID | M | The MCPTT group ID on which the imminent peril group state is to be cancelled. |
10.6.2.2.6a MCPTT in-progress imminent peril group state cancel response p. 38
Table 10.6.2.2.6a-1 describes the information flow MCPTT in-progress imminent peril group state cancel response from the MCPTT client to the MCPTT server, from the MCPTT server to the MCPTT server, and from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The identity of the cancelling party. |
| MCPTT group ID | M | The MCPTT group ID on which the imminent peril group state is to be cancelled. |
| Result | M | Result of the MCPTT in-progress imminent peril group state cancel request (success or failure). |
10.6.2.2.7 Group call request (MCPTT client - MCPTT server) p. 39
Table 10.6.2.2.7-1 describes the information flow group call request from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | 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 | O | When originating client requests the floor, this element shall be included. |
| Broadcast indicator | O | Indicates that the group call request is for a broadcast group call. |
| Location information | O | Location of the calling party. |
| Requested priority | O | Application priority level requested for this call. |
| Remotely initiated call request indicator | O | Indicates that the MCPTT group call request is a result of receiving of a remotely initiated call request and may be included only for remotely initiated call. |
10.6.2.2.8 Group call request (MCPTT server - group host MCPTT server) p. 39
Table 10.6.2.2.8-1 describes the information flow group call request between the MCPTT server and the group host MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | 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 initiated. |
| SDP offer | M | Media parameters of MCPTT server. |
| Broadcast indicator | O | Indicates that the group call request is for a broadcast group call. |
| Implicit floor request (see NOTE) | O | Indicates that the originating client requests the floor. |
| Requested priority | O | Priority level requested for the call. |
| Location information | O | Location of the calling party. |
| Remotely initiated call request indicator | O | Indicates that the MCPTT group call request is a result of receiving of a remotely initiated call request and may be included only for remotely initiated call. |
|
NOTE:
This information element shall be included only when the originating client requests the floor.
|
||
10.6.2.2.9 Group call request (MCPTT server - MCPTT client) p. 40
Table 10.6.2.2.9-1 describes the information flow group call request from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the calling party. |
| MCPTT ID | M | The identity of the MCPTT user towards which the request is sent. |
| 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 initiated. |
| SDP offer | M | Media parameters of MCPTT server. |
| Broadcast indicator | O | Indicates that the group call request is for a broadcast group call. |
| Remotely initiated call request indicator | O | Indicates that the MCPTT group call request is a result of receiving of a remotely initiated call request and may be included only for remotely initiated call. |
10.6.2.2.10 Group call response (MCPTT server - MCPTT client) p. 40
Table 10.6.2.2.10-1 describes the information flow group call response from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | 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 answer | M | Media parameters selected. |
| Result | M | Result of the group call request (success or failure). |
10.6.2.2.11 Group call response (MCPTT server - MCPTT server) p. 41
Table 10.6.2.2.11-1 describes the information flow group call response between the MCPTT servers.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the target MCPTT group member. |
| Functional alias | O | The functional alias 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. |
| Result | M | Result of the group call request (success or failure). |
10.6.2.2.12 Group call response (MCPTT client - MCPTT server) p. 41
Table 10.6.2.2.12-1 describes the information flow group call response from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the target MCPTT group member. |
| Functional alias | O | The functional alias of the target MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is initiated. |
| SDP answer | M | Media parameters selected. |
| Result | M | Result of the group call request (success or failure). |
10.6.2.2.13 Group call notify (MCPTT server - MCPTT client) p. 41
Table 10.6.2.2.13-1 describes the information flow group call notify from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the calling party. |
| MCPTT ID | M | The identity of the MCPTT user towards which the notify is sent. |
| 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. |
| MCPTT ID list (see NOTE) | O | The list of the affiliated MCPTT group members who did not acknowledge the group call request. |
|
NOTE:
Only applicable to acknowledged group calls.
|
||
10.6.2.2.14 Group call release request (MCPTT server - MCPTT client) p. 42
Table 10.6.2.2.14-1 describes the information flow group call release request from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released. |
10.6.2.2.14a Group call release request (MCPTT client - MCPTT server) p. 42
Table 10.6.2.2.14a-1 describes the information flow group call release request from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released. |
10.6.2.2.15 Group call release request (MCPTT server - MCPTT server) p. 42
Table 10.6.2.2.15-1 describes the information flow group call release request between the MCPTT servers.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released. |
10.6.2.2.16 Group call release response (MCPTT client - MCPTT server) p. 43
Table 10.6.2.2.16-1 describes the information flow group call release response from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released. |
10.6.2.2.17 Group call release response (MCPTT server - MCPTT server) p. 43
Table 10.6.2.2.17-1 describes the information flow group call release response between the MCPTT servers.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released. |
10.6.2.2.18 Group call rejoin request (MCPTT client - MCPTT server) p. 43
Table 10.6.2.2.18-1 describes the information flow group call rejoin request from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the re-joining MCPTT group member. |
| Functional alias | O | The functional alias of the re-joining MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is on-going. |
| SDP offer | M | Media parameters of MCPTT client. |
10.6.2.2.19 Group call rejoin response (MCPTT server - MCPTT client) p. 44
Table 10.6.2.2.19-1 describes the information flow group call rejoin response from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member rejoining the group call. |
| Functional alias | O | The functional alias of the MCPTT group member re-joining the group call. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is on-going. |
| SDP answer | M | Media parameters selected. |
| Emergency indicator | O | Indicates that the ongoing group call is an MCPTT emergency group call. |
| Imminent peril indicator | O | Indicates that the ongoing group call is an MCPTT imminent peril group call. |
10.6.2.2.20 Group join request p. 44
Table 10.6.2.2.20-1 describes the information flow group join request from the MCPTT client to the MCPTT server and from the (MCPTT user's primary) MCPTT server to the group host MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member joining the group communications for the group. |
| Functional alias | O | The functional alias of the MCPTT group member joining the group communication for the group. |
| MCPTT group ID | M | The MCPTT group ID of the group to which the group communication is requested. |
| SDP offer | M | Media parameters of MCPTT client. |
| Implicit floor request (see NOTE) | O | Indicates that the originating client requests the floor. |
| Requested priority | O | Application priority level requested for this call. |
|
NOTE:
This information element shall be included only when the originating client requests the floor.
|
||
10.6.2.2.21 Group join response p. 44
Table 10.6.2.2.21-1 describes the information flow group join response from the MCPTT server to the MCPTT client and from the group host MCPTT server to the (MCPTT user's primary) MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member joining the group communications for the group. |
| Functional alias | O | The functional alias of the MCPTT group member joining the group communication for the group. |
| MCPTT group ID | M | The MCPTT group ID of the group to which the group communication is requested. |
| SDP answer | M | Media parameters selected. |
10.6.2.2.22 Group call leave request (MCPTT server - MCPTT client) p. 45
Table 10.6.2.2.22-1 describes the information flow group call leave request from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member which has been de-affiliated. |
| Functional alias | O | The functional alias of the MCPTT group member which has been de-affiliated. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is on-going. |
10.6.2.2.22a Group call leave request (MCPTT client - MCPTT server) |R16| p. 45
Table 10.6.2.2.22a-1 describes the information flow group call leave request from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member leaving the group call. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is on-going. |
10.6.2.2.23 Group call leave response (MCPTT client - MCPTT server) p. 45
Table 10.6.2.2.23-1 describes the information flow group call leave response from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member which has been de-affiliated. |
| Functional alias | O | The functional alias of the MCPTT group member which has been de-affiliated. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is on-going. |
10.6.2.2.23a Group call leave response (MCPTT server - MCPTT client) |R16| p. 46
Table 10.6.2.2.23a-1 describes the information flow group call leave response from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member leaving the group call. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is on-going. |
10.6.2.2.24 Group interrogate request (MCPTT server - MCPTT server) p. 46
Table 10.6.2.2.24-1 describes the information flow group interrogate request between two MCPTT servers.
| Information element | Status | Description |
|---|---|---|
| MCPTT group ID | M | The MCPTT group ID of the group being interrogated. |
10.6.2.2.25 Group interrogate response (MCPTT server - MCPTT server) p. 46
Table 10.6.2.2.25-1 describes the information flow group interrogate response between two MCPTT servers.
| Information element | Status | Description |
|---|---|---|
| MCPTT group ID | M | The MCPTT group ID of the group being interrogated. |
| MCPTT ID list | M | List of the MCPTT IDs for the MCPTT group members that are members of the MCPTT group ID. |
10.6.2.2.26 Group-broadcast group call request (MCPTT client - MCPTT server) p. 46
Table 10.6.2.2.26-1 describes the information flow group-broadcast group call request from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | 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 | M | When originating client requests the floor, this element shall be included. |
| Broadcast indicator | M | Indicates that the group call request is for a broadcast group call. |
| Location information | O | Location of the calling party. |
| Requested priority | O | Application priority level requested for this call. |
10.6.2.2.27 Group-broadcast group call request (MCPTT server - MCPTT client) p. 47
Table 10.6.2.2.27-1 describes the information flow group-broadcast group call request from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the calling party. |
| MCPTT ID | M | The identity of the MCPTT user towards which the request is sent. |
| 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. |
| Broadcast indicator | M | Indicates that the group call request is for a broadcast group call. |
10.6.2.2.28 Group-broadcast group call response (MCPTT client - MCPTT server) p. 47
Table 10.6.2.2.28-1 describes the information flow group-broadcast group call response from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the target MCPTT group member. |
| Functional alias | O | The functional alias of the target MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is initiated. |
| SDP answer | M | Media parameters selected. |
| Result | M | Result of the group-broadcast group call request (success or failure). |
10.6.2.2.29 Group-broadcast group call response (MCPTT server - MCPTT client) p. 48
Table 10.6.2.2.29-1 describes the information flow group-broadcast group call response from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | 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 answer | M | Media parameters selected. |
| Result | M | Result of the group-broadcast group call request (success or failure). |
10.6.2.2.30 Group-broadcast group call release request (MCPTT client - MCPTT server) p. 48
Table 10.6.2.2.30-1 describes the information flow group-broadcast group call release request from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released. |
10.6.2.2.31 Group-broadcast group call release request (MCPTT server - MCPTT client) p. 48
Table 10.6.2.2.31-1 describes the information flow group-broadcast group call release request from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released. |
10.6.2.2.32 Group-broadcast group call release response (MCPTT server - MCPTT client) p. 49
Table 10.6.2.2.32-1 describes the information flow group-broadcast group call release response from the MCPTT server to the MCPTT client.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released. |
10.6.2.2.33 Group-broadcast group call release response (MCPTT client - MCPTT server) p. 49
Table 10.6.2.2.33-1 describes the information flow group-broadcast group call release response from the MCPTT client to the MCPTT server.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The MCPTT ID of the MCPTT group member. |
| Functional alias | O | The functional alias of the MCPTT group member. |
| MCPTT group ID | M | The MCPTT group ID of the group on which the call is released. |
10.6.2.2.34 Void
10.6.2.2.35 Void
10.6.2.2.36 Void
10.6.2.2.37 Void
10.6.2.2.38 Void
10.6.2.2.39 Void
10.6.2.2.40 Void
10.6.2.2.41 Void
10.6.2.2.42 Void
10.6.2.2.43 Void
10.6.2.2.44 Void
10.6.2.2.45 Void
10.6.2.2.46 Void
10.6.2.2.47 Void
10.6.2.2.48 Void
10.6.2.2.49 Void
10.6.2.2.50 Void
10.6.2.2.51 MCPTT emergency floor remote trigger |R19| p. 50
Table 10.6.2.2.51-1 describes the information flow MCPTT emergency floor remote trigger, from the MCPTT client to the MCPTT server, to trigger the target MCPTT client, who has initiated the emergency communication, to send a floor request.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The identity of the requester, e.g. dispatcher. |
| Functional alias | O | Functional alias of the requester. |
| MCPTT ID | M | The identity of the target, who is triggered to send a floor request and automatically open the microphone. |
| Functional alias | O | Functional alias of the target. |
Table 10.6.2.2.51-2 describes the information flow MCPTT emergency floor remote trigger, from from the MCPTT server to the target MCPTT client, who has initiated the emergency communication, to send a floor request.
| Information element | Status | Description |
|---|---|---|
| MCPTT ID | M | The identity of the requester, e.g. dispatcher. |
| Functional alias | O | Functional alias of the requester. |
| MCPTT ID | M | The identity of the target, who is triggered to send a floor request and automatically open the microphone. |
