Telnyx Conference Commands API

openapi: 3.1.0
info:
  contact:
    email: support@telnyx.com
  description: Telnyx provides global communications and connectivity APIs for developers — including SIP trunking, programmable voice, SMS, MMS, WhatsApp Business Messaging, Call Control, Fax, Wireless (IoT & eSIM), Phone Numbers (DID provisioning & porting), Emergency Services, and Network APIs for private interconnects and edge connectivity. Build, scale, and manage voice, messaging, and data networks with Telnyx's carrier-grade global infrastructure and API-first platform.
  title: Telnyx Access Tokens Conference Commands API
  version: 2.0.0
  x-endpoint-cost: light
servers:
- description: Version 2.0.0 of the Telnyx API
  url: https://api.telnyx.com/v2
security:
- bearerAuth: []
tags:
- description: Conference command operations
  name: Conference Commands
paths:
  /conferences:
    get:
      description: Lists conferences. Conferences are created on demand, and will expire after all participants have left the conference or after 4 hours regardless of the number of active participants. Conferences are listed in descending order by `expires_at`.
      operationId: ListConferences
      parameters:
      - $ref: '#/components/parameters/ConferenceRegion'
      - $ref: '#/components/parameters/call-control_FilterConsolidated'
      - $ref: '#/components/parameters/call-control_PageConsolidated'
      responses:
        '200':
          $ref: '#/components/responses/ListConferencesResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: List conferences
      tags:
      - Conference Commands
      x-group-parameters: 'true'
      x-latency-category: responsive
    post:
      description: 'Create a conference from an existing call leg using a `call_control_id` and a conference name. Upon creating the conference, the call will be automatically bridged to the conference. Conferences will expire after all participants have left the conference or after 4 hours regardless of the number of active participants.


        **Expected Webhooks:**


        - `conference.created`

        - `conference.participant.joined`

        - `conference.participant.left`

        - `conference.ended`

        - `conference.recording.saved`

        - `conference.floor.changed`

        '
      operationId: CreateConference
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateConferenceRequest'
        description: Create a conference
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Create conference
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{conference_id}/participants:
    get:
      description: Lists conference participants
      operationId: ListConferenceParticipants
      parameters:
      - description: Uniquely identifies the conference by id
        in: path
        name: conference_id
        required: true
        schema:
          type: string
      - $ref: '#/components/parameters/ConferenceRegion'
      - $ref: '#/components/parameters/call-control_PageConsolidated'
      - description: 'Consolidated filter parameter (deepObject style). Originally: filter[muted], filter[on_hold], filter[whispering]'
        explode: true
        in: query
        name: filter
        schema:
          properties:
            muted:
              description: If present, participants will be filtered to those who are/are not muted
              type: boolean
            on_hold:
              description: If present, participants will be filtered to those who are/are not put on hold
              type: boolean
            whispering:
              description: If present, participants will be filtered to those who are whispering or are not
              type: boolean
          type: object
        style: deepObject
      responses:
        '200':
          $ref: '#/components/responses/ListParticipantsResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: List conference participants
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}:
    get:
      description: Retrieve an existing conference
      operationId: RetrieveConference
      parameters:
      - description: Uniquely identifies the conference by id
        in: path
        name: id
        required: true
        schema:
          type: string
      - $ref: '#/components/parameters/ConferenceRegion'
      responses:
        '200':
          $ref: '#/components/responses/ConferenceResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
      summary: Retrieve a conference
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/end:
    post:
      description: End a conference and terminate all active participants.
      operationId: EndConference
      parameters:
      - description: Uniquely identifies the conference.
        in: path
        name: id
        required: true
        schema:
          format: uuid
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/EndConferenceRequest'
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: End a conference
      tags:
      - Conference Commands
      x-endpoint-cost: 0.01
      x-latency-category: interactive
  /conferences/{id}/actions/gather_using_audio:
    post:
      description: Play an audio file to a specific conference participant and gather DTMF input.
      operationId: ConferenceGatherUsingAudio
      parameters:
      - description: Uniquely identifies the conference.
        in: path
        name: id
        required: true
        schema:
          format: uuid
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ConferenceGatherUsingAudioRequest'
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Gather DTMF using audio prompt in a conference
      tags:
      - Conference Commands
      x-endpoint-cost: 0.01
      x-latency-category: interactive
  /conferences/{id}/actions/hold:
    post:
      description: Hold a list of participants in a conference call
      operationId: HoldConferenceParticipants
      parameters:
      - description: Uniquely identifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ConferenceHoldRequest'
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Hold conference participants
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/join:
    post:
      description: "Join an existing call leg to a conference. Issue the Join Conference command with the conference ID in the path and the `call_control_id` of the leg you wish to join to the conference as an attribute. The conference can have up to a certain amount of active participants, as set by the `max_participants` parameter in conference creation request. \n\n**Expected Webhooks:**\n\n- `conference.participant.joined`\n- `conference.participant.left`\n"
      operationId: JoinConference
      parameters:
      - description: Uniquely identifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/JoinConferenceRequest'
        description: Join Conference request object
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Join a conference
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/leave:
    post:
      description: "Removes a call leg from a conference and moves it back to parked state. \n\n**Expected Webhooks:**\n\n- `conference.participant.left`\n"
      operationId: LeaveConference
      parameters:
      - description: Uniquely identifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/LeaveConferenceRequest'
        description: Leave Conference request object
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Leave a conference
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/mute:
    post:
      description: Mute a list of participants in a conference call
      operationId: MuteConferenceParticipants
      parameters:
      - description: Uniquely identifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ConferenceMuteRequest'
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Mute conference participants
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/play:
    post:
      description: Play audio to all or some participants on a conference call.
      operationId: PlayConferenceAudio
      parameters:
      - description: Uniquely identifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ConferencePlayRequest'
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Play audio to conference participants
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/record_pause:
    post:
      description: Pause conference recording.
      operationId: PauseConferenceRecording
      parameters:
      - description: Specifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PauseConferenceRecordingRequest'
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Conference recording pause
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/record_resume:
    post:
      description: Resume conference recording.
      operationId: ResumeConferenceRecording
      parameters:
      - description: Specifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ResumeConferenceRecordingRequest'
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Conference recording resume
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/record_start:
    post:
      description: 'Start recording the conference. Recording will stop on conference end, or via the Stop Recording command.


        **Expected Webhooks:**


        - `conference.recording.saved`'
      operationId: StartConferenceRecording
      parameters:
      - description: Specifies the conference to record by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/StartConferenceRecordingRequest'
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Conference recording start
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/record_stop:
    post:
      description: 'Stop recording the conference.


        **Expected Webhooks:**


        - `conference.recording.saved`

        '
      operationId: StopConferenceRecording
      parameters:
      - description: Specifies the conference to stop the recording for by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/StopRecordingConferenceRequest'
        description: Stop recording conference request
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Conference recording stop
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/send_dtmf:
    post:
      description: Send DTMF tones to one or more conference participants.
      operationId: ConferenceSendDTMF
      parameters:
      - description: Uniquely identifies the conference.
        in: path
        name: id
        required: true
        schema:
          format: uuid
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ConferenceSendDTMFRequest'
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Send DTMF to conference participants
      tags:
      - Conference Commands
      x-endpoint-cost: 0.01
      x-latency-category: interactive
  /conferences/{id}/actions/speak:
    post:
      description: Convert text to speech and play it to all or some participants.
      operationId: SpeakTextToConference
      parameters:
      - description: Specifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ConferenceSpeakRequest'
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Speak text to conference participants
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/stop:
    post:
      description: Stop audio being played to all or some participants on a conference call.
      operationId: StopConferenceAudio
      parameters:
      - description: Uniquely identifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ConferenceStopRequest'
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Stop audio being played on the conference
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/unhold:
    post:
      description: Unhold a list of participants in a conference call
      operationId: UnholdConferenceParticipants
      parameters:
      - description: Uniquely identifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ConferenceUnholdRequest'
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Unhold conference participants
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/unmute:
    post:
      description: Unmute a list of participants in a conference call
      operationId: UnmuteConferenceParticipants
      parameters:
      - description: Uniquely identifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ConferenceUnmuteRequest'
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Unmute conference participants
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/actions/update:
    post:
      description: Update conference participant supervisor_role
      operationId: UpdateConference
      parameters:
      - description: Uniquely identifies the conference by id or name
        in: path
        name: id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateConferenceRequest'
        description: Update Conference request object
        required: true
      responses:
        '200':
          $ref: '#/components/responses/ConferenceCommandResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Update conference participant
      tags:
      - Conference Commands
      x-latency-category: interactive
  /conferences/{id}/participants/{participant_id}:
    get:
      description: Retrieve details of a specific conference participant by their ID or label.
      operationId: RetrieveConferenceParticipant
      parameters:
      - description: Uniquely identifies the conference.
        in: path
        name: id
        required: true
        schema:
          format: uuid
          type: string
      - description: Uniquely identifies the participant by their ID or label.
        in: path
        name: participant_id
        required: true
        schema:
          type: string
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ConferenceParticipantResource'
          description: Successful response
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Retrieve a conference participant
      tags:
      - Conference Commands
      x-endpoint-cost: 0.01
      x-latency-category: interactive
    patch:
      description: Update properties of a conference participant.
      operationId: UpdateConferenceParticipant
      parameters:
      - description: Uniquely identifies the conference.
        in: path
        name: id
        required: true
        schema:
          format: uuid
          type: string
      - description: Uniquely identifies the participant.
        in: path
        name: participant_id
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateConferenceParticipantRequest'
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ConferenceParticipantResource'
          description: Successful response
        '401':
          $ref: '#/components/responses/UnauthorizedResponse'
        '404':
          $ref: '#/components/responses/NotFoundResponse'
        '422':
          $ref: '#/components/responses/UnprocessableEntityResponse'
      summary: Update a conference participant
      tags:
      - Conference Commands
      x-endpoint-cost: 0.01
      x-latency-category: interactive
components:
  responses:
    ConferenceCommandResponse:
      content:
        application/json:
          schema:
            properties:
              data:
                $ref: '#/components/schemas/ConferenceCommandResult'
            title: Conference Command Response
            type: object
      description: Successful response upon making a conference command.
    NotFoundResponse:
      content:
        application/json:
          examples:
            audio_file_not_found:
              summary: Audio file not found
              value:
                errors:
                - code: '10005'
                  detail: Provided audio file URL couldn't be found.
                  title: Audio file not found
            conference_not_found:
              summary: Conference not found
              value:
                errors:
                - code: '90058'
                  detail: The conference does not exist.
                  title: Invalid conference_id
            recording_not_found:
              summary: Recording not found
              value:
                errors:
                - code: '10005'
                  detail: The recording could not be found. Please check the recording_id and try again.
                  source:
                    pointer: /recording_id
                  title: Recording not found
            resource_not_found:
              summary: Generic resource not found
              value:
                errors:
                - code: '10007'
                  detail: Resource not found
                  title: Resource not found
          schema:
            $ref: '#/components/schemas/call-control_Errors'
      description: 'Resource not found. The requested resource does not exist. Common causes include: invalid call_control_id, conference not found, audio file not found, or recording not found.'
    ConferenceResponse:
      content:
        application/json:
          schema:
            properties:
              data:
                $ref: '#/components/schemas/Conference'
            title: Conference Response
            type: object
      description: Successful response with details about a conference.
    ListParticipantsResponse:
      content:
        application/json:
          schema:
            properties:
              data:
                items:
                  $ref: '#/components/schemas/Participant'
                type: array
              meta:
                $ref: '#/components/schemas/PaginationMeta'
            title: List Participants Response
            type: object
      description: Successful response with a list of conference participants.
    ListConferencesResponse:
      content:
        application/json:
          schema:
            properties:
              data:
                items:
                  $ref: '#/components/schemas/Conference'
                type: array
              meta:
                $ref: '#/components/schemas/PaginationMeta'
            title: List Conferences Response
            type: object
      description: Successful response with a list of conferences.
    UnprocessableEntityResponse:
      content:
        application/json:
          examples:
            ai_assistant_already_active:
              summary: AI Assistant already active
              value:
                errors:
                - code: '90061'
                  detail: AI Assistant cannot be started more than once.
                  title: AI Assistant is already in progress
            call_already_ended:
              summary: Call has already ended
              value:
                errors:
                - code: '90018'
                  detail: This call is no longer active and can't receive commands.
                  title: Call has already ended
            call_already_in_queue:
              summary: Call already in queue
              value:
                errors:
                - code: '90038'
                  detail: Call can't be added to a queue it's already in.
                  title: Call already in queue
            call_not_answered:
              summary: Call not answered yet
              value:
                errors:
                - code: '90034'
                  detail: This call can't receive this command because it has not been answered yet.
                  title: Call not answered yet
            cannot_record_before_audio_started:
              summary: Cannot record before audio started
              value:
                errors:
                - code: '90020'
                  detail: Call recording cannot be started until audio has commenced on the call.
                  title: Call recording triggered before audio started
            conference_already_ended:
              summary: Conference has already ended
              value:
                errors:
                - code: '90019'
                  detail: This conference is no longer active and can't receive commands.
                  title: Conference has already ended
            conference_name_conflict:
              summary: Conference name conflict
              value:
                errors:
                - code: '90033'
                  detail: Conference with given name already exists and it's active.
                  title: Unable to execute command
            fork_not_found:
              summary: Call is not forked
              value:
                errors:
                - code: '90031'
                  detail: Can't stop forking, because the call isn't currently forked.
                  title: Call is not currently forked
            invalid_call_control_id:
              summary: Invalid call control ID
              value:
                errors:
                - code: '90015'
                  detail: The call_control_id provided was not valid.
                  source:
                    pointer: /call_control_id
                  title: Invalid Call Control ID
            invalid_connection_id:
              summary: Invalid connection ID
              value:
                errors:
                - code: '10015'
                  detail: The requested connection_id (Call Control App ID) is either invalid or does not exist. Only Call Control Apps with valid webhook URL are accepted.
                  source:
                    pointer: /connection_id
                  title: Invalid value for connection_id (Call Control App ID)
            invalid_enumerated_value:
              summary: Invalid enumerated value
              value:
                errors:
                - code: '10032'
                  detail: 'The value must be one of: dual, single.'
                  source:
                    pointer: /record_channels
                  title: Invalid enumerated value
            invalid_phone_number_format:
              summary: Invalid phone number format
              value:
                errors:
                - code: '10016'
                  detail: The 'to' parameter must be in E164 format.
                  source:
                    pointer: /to
                  title: Phone number must be in +E164 format
            max_participants_reached:
              summary: Maximum participants reached
              value:
                errors:
                - code: '90032'
                  detail: The maximum allowed value of `max_participants` has been reached at 100.
                  title: Maximum number of participants reached
            media_streaming_used:
              summary: Media streaming in use
              value:
                errors:
                - code: '90045'
                  detai

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# Full source: https://raw.githubusercontent.com/api-evangelist/telnyx/refs/heads/main/openapi/telnyx-conference-commands-api-openapi.yml