Content for TS 23.281 Word version: 19.1.0

1… 5… 6… 7… 7.1.2.3… 7.1.2.3.1.2… 7.1.2.3.2… 7.1.2.4… 7.1.2.5.2… 7.1.3… 7.2… 7.2.2.3… 7.2.2.4… 7.2.3… 7.3… 7.4… 7.4.3… 7.5… 7.5.2.3… 7.6… 7.7… 7.7.1.3… 7.7.1.3.2A… 7.7.1.3.4… 7.7.1.3.6… 7.7.2… 7.7.2.7… 7.7.2.9… 7.8… 7.11… 7.17… 7.19… 7.19.2.8… 7.19.3… 7.19.3.1.4… 7.19.3.2… 7.19.3.2.3… 7.19.3.2.6… A…

7.2 Private call 7.2.1 General 7.2.2 Private call on-network 7.2.2.1 General 7.2.2.2 Information flows for private call in on-network 7.2.2.2.1 MCVideo private call request (MCVideo client - MCVideo server) 7.2.2.2.2 MCVideo private call request 7.2.2.2.3 MCVideo private call response (MCVideo client - MCVideo server) 7.2.2.2.4 MCVideo private call response 7.2.2.2.5 MCVideo call end request 7.2.2.2.6 MCVideo emergency private call request (MCVideo client to MCVideo server) 7.2.2.2.7 MCVideo emergency private call request 7.2.2.2.8 Emergency MCVideo private call response (MCVideo client - MCVideo server) 7.2.2.2.9 Emergency MCVideo private call response 7.2.2.2.10 MCVideo progress indication 7.2.2.2.11 MCVideo functional alias resolution response
...

7.2 Private call p. 66

7.2.1 General p. 66

Private calls are enabled in both on-network and off-network.

Private calls can be setup in two different commencement modes, automatic commencement mode and manual commencement mode.

7.2.2 Private call on-network p. 66

The private call setup in automatic commencement mode is described in subclause 7.2.2.3.1, manual commencement mode in subclause 7.2.2.3.2 and private call release (client or server initiated) in subclause 7.2.2.3.3.

7.2.2.2 Information flows for private call in on-network p. 66

7.2.2.2.1 MCVideo private call request (MCVideo client - MCVideo server) p. 66

Table 7.2.2.2.1-1 describes the information flow MCVideo private call request from the MCVideo client to the MCVideo server.

Table 7.2.2.2.1-1: MCVideo private call request (MCVideo client - 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 ID (see Note)	O	The MCVideo ID of the called party
Functional alias (see Note)	O	The functional alias of the called party
Transmit media request indication	M	This element indicates whether transmission control will be used for the private call.
SDP offer	M	Media parameters of MCVideo client.
Requested commencement mode	O	An indication that is included if the user is requesting a particular commencement mode
Implicit transmit media request	O	An indication that the user is also requesting the permission to transmit video
Push indication	O	Indicates that the private call request is for a one-to-one push call
Pull indication	O	Indicates that the private call request is for a one-to-one pull call
Requested priority	O	Application priority level requested for this call
NOTE: Either an MCVideo ID or a functional alias shall be present, but not both.

7.2.2.2.2 MCVideo private call request p. 67

Table 7.2.2.2.2-1 describes the information flow MCVideo private call request from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.

Table 7.2.2.2.2-1: MCVideo private call request

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 ID	M	The MCVideo ID of the called party
Transmit media request indication	M	This element indicates whether transmission control will be used for the private call.
SDP offer	M	Media parameters of MCVideo client.
Requested commencement mode	O	An indication that is included if the user is requesting a particular commencement mode
Implicit transmit media request (see Note)	O	An indication that the user is also requesting the permission to transmit video
Push indication	O	Indicates that the private call request is for a one-to-one push call
Pull indication	O	Indicates that the private call request is for a one-to-one pull call
NOTE: This element shall not be included when the request is sent from the MCVideo server to the MCVideo client.

7.2.2.2.3 MCVideo private call response (MCVideo client - MCVideo server) p. 68

Table 7.2.2.2.3-1 describes the information flow MCVideo private call response from the MCVideo client to the MCVideo server.

Table 7.2.2.2.3-1: MCVideo private call response (MCVideo client - MCVideo server)

Information Element	Status	Description
MCVideo ID	M	The MCVideo ID of the calling party
MCVideo ID	O	The MCVideo ID of the called party
SDP answer	M	Media parameters selected
Requested commencement mode	O	An indication of the commencement mode to be used.
Implicit transmit media request (see Note)	O	An indication that the user is also requesting the permission to transmit video
NOTE: This element shall be included when the response is associated to a request including a pull indication.

7.2.2.2.4 MCVideo private call response p. 68

Table 7.2.2.2.4-1 describes the information flow MCVideo private call response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.

Table 7.2.2.2.4-1: MCVideo private call response

Information Element	Status	Description
MCVideo ID	M	The MCVideo ID of the calling party
MCVideo ID	O	The MCVideo ID of the called party
Acceptance confirmation	O	An indication whether the user has positively accepted the call.
SDP answer	M	Media parameters selected
Implicit transmit media request (see NOTE)	O	An indication that the user is also requesting the permission to transmit video
NOTE: This element shall not be included when the request is sent from the MCVideo server to the MCVideo client.

7.2.2.2.5 MCVideo call end request p. 69

Table 7.2.2.2.5-1 describes the information flow MCVideo call end 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.

Table 7.2.2.2.5-1: MCVideo call end request

Information Element	Status	Description
MCVideo ID	M	The MCVideo ID of the calling party
MCVideo ID	M	The MCVideo ID of the called party
MCVideo call end reason	O	Indicate that the reason to end the call, e.g., due to migration, or due to user request.

7.2.2.2.6 MCVideo emergency private call request (MCVideo client to MCVideo server) |R15| p. 69

Table 7.2.2.2.6-1 describes the information flow MCVideo emergency private call request from the MCVideo client to the MCVideo server.

Table 7.2.2.2.6-1: MCVideo emergency private call request (MCVideo client to 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 ID	M	The MCVideo ID of the called party
Emergency indicator	M	Indicates that the private call request is an MCVideo emergency call
Alert indicator	M	Indicates whether an emergency alert is to be sent
Requested commencement mode	O	An indication of the commencement mode to be used.
Implicit transmit media request	O	An indication that the user is also requesting to transmit media
SDP offer	M	Media parameters of MCVideo client.
Requested priority	O	Priority level requested for the call

7.2.2.2.7 MCVideo emergency private call request |R15| p. 70

Table 7.2.2.2.7-1 describes the information flow MCVideo emergency private call request from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.

Table 7.2.2.2.7-1: MCVideo emergency private call request

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 ID	M	The MCVideo ID of the called party
Emergency indicator	M	Indicates that the private call request is an MCVideo emergency call
Alert indicator	M	Indicates whether an emergency alert is to be sent
Requested commencement mode	O	An indication of the commencement mode to be used.
Implicit transmit media request	O	An indication that the user is also requesting to transmit media.
SDP offer	M	Media parameters of MCVideo client.

7.2.2.2.8 Emergency MCVideo private call response (MCVideo client - MCVideo server) |R15| p. 70

Table 7.2.2.2.8-1 describes the information flow emergency MCVideo private call response from the MCVideo client to the MCVideo server.

Table 7.2.2.2.8-1: Emergency MCVideo private call response (MCVideo client - MCVideo server)

Information Element	Status	Description
MCVideo ID	M	The MCVideo ID of the calling party
MCVideo ID	O	The MCVideo ID of the called party
SDP answer	M	Media parameters selected
Requested commencement mode	O	An indication of the commencement mode to be used.

7.2.2.2.9 Emergency MCVideo private call response |R15| p. 70

Table 7.2.2.2.9-1 describes the information flow Emergency MCVideo private call response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client.

Table 7.2.2.2.9-1: Emergency MCVideo private call response

Information Element	Status	Description
MCVideo ID	M	The MCVideo ID of the calling party
MCVideo ID	O	The MCVideo ID of the called party
Acceptance confirmation	O	An indication whether the user has positively accepted the call.
SDP answer	M	Media parameters selected

7.2.2.2.10 MCVideo progress indication |R17| p. 71

Table 7.2.2.2.10-1 describes the information flow MCVideo progress indication from the MCVideo server to the MCVideo client.

Table 7.2.2.2.10-1: MCVideo progress indication information elements

Information Element	Status	Description
MCVideo ID	M	The MCVideo ID of the calling party
MCVideo ID	M	The MCVideo ID of the called party
Progress indication	O	Indication to the caller.

7.2.2.2.11 MCVideo functional alias resolution response |R17| p. 71

Table 7.2.2.2.11-1 describes the information flow MCVideo functional alias resolution response from the MCVideo server to the MCVideo client.

Table 7.2.2.2.11-1: MCVideo functional alias resolution response information elements

Information Element	Status	Description
MCVideo ID	M	The MCVideo ID of the calling party
MCVideo ID	M	The corresponding MCVideo ID of the called functional alias