Content for TS 22.179 Word version: 19.3.0
5.6 Private Call
5.6.1 Private Call overview
5.6.2 Private Call (with Floor control) general requirements
5.6.3 Private Call (with Floor control) commencement requirements
5.6.4 Private Call (with Floor control) termination
5.6.5 Private Call (with Floor control) administration
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5.6 Private Call p. 25
5.6.1 Private Call overview p. 25
Private Calls allow two MCPTT Users to communicate directly with each other without the use of MCPTT Groups. They leverage many of the functions and features of MCPTT Group Calls, such as MCPTT User identity and alias information, location information, encryption, privacy, priority, and administrative control. Private Calls can use Floor control or not (i.e., be full voice duplex calls between users), though Private Calls without Floor control are only supported on the network.
Two commencement modes of Private Calls are supported: Manual Commencement Private Call and Automatic Commencement Private Call. The two commencement modes can be used in conjunction with Private Calls with/without Floor control.
Manual Commencement Private Calls mimic a telephone conversation where the called party receives a notification that they are being requested to join a Private Call, and the called party may accept, reject, or ignore the call request. Once the call setup is accepted, the Private Call is established and both Participants may communicate with each other.
Automatic Commencement Private Calls mimic the immediate setup and voice propagation of Group Call operation between two users where the calling party initiates an Automatic Commencement Private Call to another user and sends audio without any additional call setup delay beyond Group Calls. If available and able to accept the Private Call from the calling party, the called party immediately joins the Private Call and processes the calling party's audio.
5.6.2 Private Call (with Floor control) general requirements p. 25
[R-5.6.2-001]
The MCPTT Service shall provide the status (e.g., ringing, accepted, rejected, active) of an MCPTT Private Call (with Floor control) to the relevant MCPTT User that is a Participant of the MCPTT Private Call (with Floor control).
[R-5.6.2-002]
The MCPTT Service shall support Private Calls with Floor control.
[R-5.6.2-003]
The MCPTT Service shall provide a mechanism for an authorized MCPTT User that is a called party in an MCPTT Private Call (with Floor control), to restrict providing the reason why an MCPTT Private Call (with Floor control) setup has failed to the calling MCPTT User.
[R-5.6.2-004]
The MCPTT Service shall provide a mechanism for the Private Call (with Floor control) to be set up with the MCPTT UE designated by the called MCPTT User to be used for Private Calls (with Floor control) when the called MCPTT User has signed on to the MCPTT Service with multiple MCPTT UEs.
[R-5.6.2-005]
Void
5.6.3 Private Call (with Floor control) commencement requirements p. 26
[R-5.6.3-001]
The MCPTT Service shall support Call Commencement Modes for Private Calls (with Floor control), which determine the conditions under which Private Calls (with Floor control) are set up.
[R-5.6.3-002]
Void
[R-5.6.3-003]
The MCPTT Service shall provide a mechanism for an MCPTT User to cancel an MCPTT Private Call (with Floor control) prior to the call setup.
[R-5.6.3-004]
The MCPTT Service shall provide a means by which an authorized MCPTT User initiates an MCPTT Private Call (with Floor control).
[R-5.6.3-005]
The MCPTT Service shall provide a means by which an MCPTT UE initiates an MCPTT Private Call (with Floor control) to any MCPTT User for which the MCPTT UE's current MCPTT User is authorized.
[R-5.6.3-006]
The MCPTT Service shall provide a means by which an MCPTT User initiates a Manual Commencement Private Call (with Floor control) to any MCPTT User for which the MCPTT User is authorized.
[R-5.6.3-007]
The MCPTT Service shall require that the called MCPTT User accepts a Manual Commencement Private Call (with Floor control) setup request before the call proceeds.
[R-5.6.3-008]
The MCPTT Service shall provide a means for an MCPTT User to accept a Manual Commencement Private Call (with Floor control) request from another MCPTT User.
[R-5.6.3-009]
The MCPTT Service shall provide a means by which an MCPTT User initiates an Automatic Commencement Private Call (with Floor control) to any MCPTT User for which the MCPTT User is authorized.
[R-5.6.3-010]
The MCPTT UE shall support automatic commencement mode and manual commencement mode for Private Calls (with Floor control).
[R-5.6.3-011]
The MCPTT Service shall provide a manual commencement mode countermand by which an authorized MCPTT User may request that the invited MCPTT UE answer automatically.
[R-5.6.3-012]
The MCPTT Service shall provide a means by which the calling authorized MCPTT User is notified the called MCPTT User received the Private Call (with Floor control) request.
[R-5.6.3-013]
The MCPTT Service shall require that the called MCPTT UE acknowledge receipt of an Automatic Commencement Private Call (with Floor control) setup request before the audio transmission proceeds.
[R-5.6.3-014]
The MCPTT Service shall provide a mechanism for an authorized MCPTT User to transfer an ongoing MCPTT Private Call (with Floor control) to another MCPTT user.
[R-5.6.3-015]
The MCPTT Service shall provide a mechanism for an authorized MCPTT User to configure forwarding of incoming MCPTT Private Calls (with Floor control) to another MCPTT user in the following situations:
- Always
- If the MCPTT User is not reachable
- If the incoming private call is a call with manual commencement mode and the MCPTT User does not answer within a configured period
- Based on manual input of the MCPTT User
5.6.4 Private Call (with Floor control) termination p. 27
[R-5.6.4-001]
The MCPTT Service shall provide a mechanism for an MCPTT User to reject an MCPTT Private Call (with Floor control).
[R-5.6.4-002]
The MCPTT Service shall provide a means by which an authorized MCPTT User ignores a Manual Commencement Private Call (with Floor control) request from another MCPTT User.
[R-5.6.4-003]
The MCPTT Service shall provide a means by which an MCPTT User ends a Private Call (with Floor control) in which the MCPTT User is a Participant.
5.6.5 Private Call (with Floor control) administration p. 27
[R-5.6.5-001]
The MCPTT Service shall provide a mechanism for an MCPTT Administrator to configure which MCPTT Users, within their authority, are authorized to place a Manual Commencement Private Call (with Floor control).
[R-5.6.5-002]
The MCPTT Service shall provide a mechanism for an MCPTT Administrator to configure which MCPTT Users, within their authority, are authorized to place an Automatic Commencement Private Call (with Floor control).
[R-5.6.5-003]
The MCPTT Service shall provide a mechanism for an MCPTT Administrator to configure for a particular authorized MCPTT User, a set of MCPTT Users under the same authority to which an MCPTT Private Call (with Floor control) can be made.
[R-5.6.5004]
The MCPTT Service shall provide a mechanism for an MCPTT Administrator to configure the maximum duration for MCPTT Private Calls (with Floor control) for MCPTT Users within their authority.
[R-5.6.5-005]
The MCPTT Service shall provide a mechanism for an MCPTT Administrator to configure a timeout value in which an MCPTT Private Call (with Floor control) without a transmitting or receiving MCPTT User ends, for MCPTT Users within their authority.
[R-5.6.5-006]
The MCPTT Service shall provide a mechanism for an MCPTT Administrator to configure whether an MCPTT User, within their authority, that is a called party in an MCPTT Private Call (with Floor control), may restrict providing the reason why an MCPTT Private Call (with Floor control) setup has failed to the calling MCPTT User.
