Content for TS 23.281 Word version: 19.5.0
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7 Procedures and information flows
7.1 Group call
7.1.1 General
7.1.2 On-network group call
7.1.2.1 General
7.1.2.2 Information flows for group call in on-network
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7 Procedures and information flows p. 22
7.1 Group call p. 22
7.1.1 General p. 22
Group calls are enabled in both on-network and off-network.
7.1.2 On-network group call p. 22
7.1.2.1 General p. 22
This subclause contains procedures for group call across a single and multiple MCVideo servers, and associated functions such as emergency call, broadcast call and others.
Two variations of group call model are described in subclause 7.1.2.3, the pre-arranged group call and the chat group call. Each of the subsequent group call types in subclause 7.1.2.4 onwards are applicable to either call model.
7.1.2.2 Information flows for group call in on-network p. 22
7.1.2.2.1 Group call request (MCVideo client - MCVideo server) p. 22
Table 7.1.2.2.1-1 describes the information flow group call request from the MCVideo client to the MCVideo server.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the calling party. |
| Functional alias | O | The functional alias of the calling party. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is requested. |
| SDP offer | M | Media parameters of MCVideo clients. |
| Implicit transmit media request | O | When originating client requests the permission to transmit media, this element shall be included. |
| Broadcast indicator | O | Indicates that the group call request is for a broadcast group call. |
| Requested priority | O | Application priority level requested for this call. |
| Location information | O | Location of the calling party. |
7.1.2.2.2 Group call request p. 22
Table 7.1.2.2.2-1 describes the information flow group call request from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the calling party. |
| Functional alias | O | The functional alias of the calling party. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is initiated. |
| SDP offer | M | Media parameters of MCVideo server. |
| Broadcast indicator | O | Indicates that the group call request is for a broadcast group call. |
| Location information | O | Location of the calling party. |
7.1.2.2.3 Group call response p. 23
Table 7.1.2.2.3-1 describes the information flow group call response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the calling party. |
| MCVideo group ID | M | The MCVideo 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). |
7.1.2.2.4 Group call response (MCVideo client - MCVideo server) p. 23
Table 7.1.2.2.4-1 describes the information flow group call response from the MCVideo client to the MCVideo server.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the target MCVideo group member. |
| MCVideo group ID | M | The MCVideo 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). |
7.1.2.2.5 Group call release request p. 23
Table 7.1.2.2.5-1 describes the information flow group call release request from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the MCVideo group member. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is released. |
7.1.2.2.6 Group call release request (MCVideo client - MCVideo server) p. 24
Table 7.1.2.2.6-1 describes the information flow group call release request from the MCVideo client to the MCVideo server.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the MCVideo group member. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is released. |
7.1.2.2.7 Group call release response p. 24
Table 7.1.2.2.7-1 describes the information flow group call release response from the MCVideo server to the MCVideo server and from the MCVideo client to the MCVideo server.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the MCVideo group member. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is released. |
7.1.2.2.8 Group call rejoin request p. 24
Table 7.1.2.2.8-1 describes the information flow group call rejoin request from the MCVideo server to the MCVideo server and from the MCVideo client to the MCVideo server.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the re-joining MCVideo group member. |
| Functional alias | O | The functional alias of the re-joining MCVideo group member. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is on-going. |
| SDP offer | M | Media parameters of MCVideo client. |
7.1.2.2.9 Group call rejoin response p. 25
Table 7.1.2.2.9-1 describes the information flow group call rejoin response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the MCVideo group member rejoining the group call. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is on-going. |
| SDP answer | M | Media parameters selected. |
7.1.2.2.10 Group join request p. 25
Table 7.1.2.2.10-1 describes the information flow group join request from the MCVideo server to the MCVideo server and from the MCVideo client to the MCVideo server.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the MCVideo group member joining the group communications for the group. |
| MCVideo group ID | M | The MCVideo group ID of the group to which the group communication is requested. |
| SDP offer | M | Media parameters of MCVideo client. |
| Implicit transmit media request | O | An indication that the user is also requesting the permission to transmit video. |
| Requested priority | O | Application priority level requested for this call. |
7.1.2.2.11 Group join response p. 25
Table 7.1.2.2.11-1 describes the information flow group join response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the MCVideo group member joining the group communications for the group. |
| MCVideo group ID | M | The MCVideo group ID of the group to which the group communication is requested. |
| SDP answer | M | Media parameters selected. |
7.1.2.2.12 Group call leave request p. 25
Table 7.1.2.2.12-1 describes the information flow group call leave request from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the MCVideo group member which has been de-affiliated. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is on-going. |
7.1.2.2.12a Group call leave request |R16| p. 26
Table 7.1.2.2.12a-1 describes the information flow group call leave request from the MCVideo client to the MCVideo server and from the MCVideo server to the MCVideo server.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the MCVideo group member leaving the group call. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is on-going. |
7.1.2.2.13 Group call leave response p. 26
Table 7.1.2.2.13-1 describes the information flow group call leave response from the MCVideo client to the MCVideo server and from the MCVideo server to the MCVideo server.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the MCVideo group member which has been de-affiliated. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is on-going. |
7.1.2.2.13a Group call leave response |R16| p. 26
Table 7.1.2.2.13a-1 describes the information flow group call leave response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The MCVideo ID of the MCVideo group member leaving the group call. |
| MCVideo group ID | M | The MCVideo group ID of the group on which the call is on-going. |
7.1.2.2.14 Void
7.1.2.2.15 Void
7.1.2.2.16 Void
7.1.2.2.17 Void
7.1.2.2.18 MCVideo emergency group call request p. 27
Table 7.1.2.2.18-1 describes the information flow emergency group call request from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The identity of the calling party. |
| Functional alias | O | The functional alias of the calling party. |
| MCVideo group ID | M | The MCVideo group ID on which the call is to be conducted. |
| Emergency indicator | M | Indicates that the group call request is an MCVideo emergency call. |
| Alert indicator | M | Indicates whether an emergency alert is to be sent. |
| Requested priority | O | Priority level requested for the call. |
| Implicit transmit media request (see NOTE) | O | Indicates that the originating client requests the permission to transmit media. |
|
NOTE:
This element shall be included only when the originating client requests the the permission to transmit media.
|
||
7.1.2.2.19 MCVideo emergency group call response p. 27
Table 7.1.2.2.19-1 describes the information flow emergency group call response from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The identity of the calling party. |
| MCVideo group ID | M | The MCVideo group ID on which the call is to be conducted. |
| Result | M | Result of the MCVideo emergency group call request (success or failure). |
7.1.2.2.20 MCVideo in-progress emergency group state cancel request p. 27
Table 7.1.2.2.20-1 describes the information flow MCVideo in-progress emergency group state cancel request from the MCVideo client to the MCVideo server and from the MCVideo server to the MCVideo server.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The identity of the cancelling party. |
| MCVideo group ID | M | The MCVideo group ID on which the MCVideo in-progress emergency state is to be cancelled. |
| Alert indicator | O | Indicates whether the emergency alert of the cancelling party is to be cancelled. |
7.1.2.2.21 MCVideo in-progress emergency group state cancel response p. 28
Table 7.1.2.2.21-1 describes the information flow MCVideo in-progress emergency group state cancel response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The identity of the cancelling party. |
| MCVideo group ID | M | The MCVideo group ID on which the MCVideo in-progress emergency state is to be cancelled. |
7.1.2.2.22 MCVideo imminent peril group call request p. 28
Table 7.1.2.2.22-1 describes the information flow MCVideo imminent peril group call request from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The identity of the calling party. |
| Functional alias | O | The functional alias of the calling party. |
| MCVideo group ID | M | The MCVideo group ID on which the call is to be conducted. |
| Requested priority | O | Priority level requested for the call. |
| Imminent peril indicator | M | Indicates that the group call request is an imminent peril call. |
7.1.2.2.23 MCVideo imminent peril group call response p. 28
Table 7.1.2.2.23-1 describes the information flow MCVideo imminent peril group call response from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The identity of the calling party. |
| MCVideo group ID | M | The MCVideo group ID on which the call is to be conducted. |
| Result | M | Result of the MCVideo imminent peril group call request (success or failure). |
7.1.2.2.24 MCVideo imminent peril group call cancel request p. 29
Table 7.1.2.2.24-1 describes the information flow MCVideo imminent peril group call cancel request from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The identity of the cancelling party. |
| MCVideo group ID | M | The MCVideo group ID on which the imminent peril is to be cancelled. |
7.1.2.2.25 MCVideo imminent peril group call cancel response p. 29
Table 7.1.2.2.25-1 describes the information flow MCVideo imminent peril group call cancel response from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.
| Information element | Status | Description |
|---|---|---|
| MCVideo ID | M | The identity of the cancelling party. |
| MCVideo group ID | M | The MCVideo group ID on which the imminent peril is to be cancelled. |
