SignalWire SIP Credentials API

openapi: 3.2.0
info:
  title: SignalWire REST SIP Credentials API
  version: 1.0.0
  contact:
    name: SignalWire
    url: https://support.signalwire.com/portal/en/newticket?departmentId=1029313000000006907&layoutId=1029313000000074011
    email: support@signalwire.com
  license:
    name: MIT
    url: https://github.com/signalwire/docs/blob/main/LICENSE
  termsOfService: https://signalwire.com/legal/signalwire-cloud-agreement
  description: Manage SIP credentials for authenticating SIP endpoints.
servers:
- url: https://{space_name}.signalwire.com
  description: SignalWire API
  variables:
    space_name:
      default: '{Your_Space_Name}'
      description: Your SignalWire Space name
security:
- SignalWireBasicAuth: []
tags:
- name: SIP Credentials
  description: Manage SIP credentials for authenticating SIP endpoints.
  externalDocs:
    url: https://signalwire.com/docs/apis
    description: Developer documentation on SIP Credentials, Fabric API endpoints
paths:
  /api/fabric/resources/sip_endpoints:
    get:
      operationId: list_sip_credentials
      summary: List SIP credentials
      description: 'A list of SIP Credentials


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_, _Messaging_, _Fax_, or _Video_.


        Learn more about API scopes.'
      parameters: []
      responses:
        '200':
          description: The request has succeeded.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/SipEndpointListResponse'
        '401':
          description: Access is unauthorized.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode401'
        '404':
          description: The server cannot find the requested resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode404'
        '500':
          description: An internal server error occurred.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode500'
      tags:
      - SIP Credentials
    post:
      operationId: create_sip_credential
      summary: Create SIP credential
      description: 'Creates a SIP Credential


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_, _Messaging_, _Fax_, or _Video_.


        Learn more about API scopes.'
      parameters: []
      responses:
        '200':
          description: The request has succeeded.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SipEndpointResponse'
        '401':
          description: Access is unauthorized.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode401'
        '404':
          description: The server cannot find the requested resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode404'
        '422':
          description: The request contains invalid parameters. See errors for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ResourceSipEndpointCreateStatusCode422'
        '500':
          description: An internal server error occurred.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode500'
      tags:
      - SIP Credentials
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SipEndpointCreateRequest'
  /api/fabric/resources/sip_endpoints/{id}:
    get:
      operationId: get_sip_credential
      summary: Get SIP credential
      description: 'Returns a SIP Credential by ID


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_, _Messaging_, _Fax_, or _Video_.


        Learn more about API scopes.'
      parameters:
      - $ref: '#/components/parameters/SipEndpointPathID'
      responses:
        '200':
          description: The request has succeeded.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SipEndpointResponse'
        '401':
          description: Access is unauthorized.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode401'
        '404':
          description: The server cannot find the requested resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode404'
        '500':
          description: An internal server error occurred.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode500'
      tags:
      - SIP Credentials
    put:
      operationId: update_sip_credential
      summary: Update SIP credential
      description: 'Updates a SIP Credential by ID


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_, _Messaging_, _Fax_, or _Video_.


        Learn more about API scopes.'
      parameters:
      - $ref: '#/components/parameters/SipEndpointPathID'
      responses:
        '200':
          description: The request has succeeded.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SipEndpointResponse'
        '401':
          description: Access is unauthorized.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode401'
        '404':
          description: The server cannot find the requested resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode404'
        '422':
          description: The request contains invalid parameters. See errors for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ResourceSipEndpointUpdateStatusCode422'
        '500':
          description: An internal server error occurred.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode500'
      tags:
      - SIP Credentials
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SipEndpointUpdateRequest'
    delete:
      operationId: delete_sip_credential
      summary: Delete SIP credential
      description: 'Deletes a SIP Credential by ID


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_, _Messaging_, _Fax_, or _Video_.


        Learn more about API scopes.'
      parameters:
      - $ref: '#/components/parameters/SipEndpointPathID'
      responses:
        '204':
          description: 'There is no content to send for this request, but the headers may be useful. '
        '401':
          description: Access is unauthorized.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode401'
        '404':
          description: The server cannot find the requested resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode404'
        '500':
          description: An internal server error occurred.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode500'
      tags:
      - SIP Credentials
  /api/fabric/resources/sip_endpoints/{id}/addresses:
    get:
      operationId: list_sip_credential_addresses
      summary: List SIP credential Addresses
      description: 'A list of addresses assigned to a SIP Credential.


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_, _Messaging_, _Fax_, or _Video_.


        Learn more about API scopes.'
      parameters:
      - $ref: '#/components/parameters/SipEndpointAddressPathID'
      responses:
        '200':
          description: The request has succeeded.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SipEndpointAddressListResponse'
        '401':
          description: Access is unauthorized.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode401'
        '404':
          description: The server cannot find the requested resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode404'
        '500':
          description: An internal server error occurred.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode500'
      tags:
      - SIP Credentials
  /api/fabric/resources/{id}/sip_endpoints:
    post:
      operationId: assign_resource_to_sip_credential
      summary: Assign Resource to SIP credential
      description: 'This endpoint assigns a specific resource to a SIP endpoint, allowing inbound calls to be handled by the resource.


        Currently only supports `calling` as a handler and automatically defaults to it.


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_, _Messaging_, _Fax_, or _Video_.


        Learn more about API scopes.'
      parameters:
      - $ref: '#/components/parameters/ResourceSipEndpointPathID'
      responses:
        '200':
          description: The request has succeeded.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ResourceSipEndpointResponse'
        '401':
          description: Access is unauthorized.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode401'
        '404':
          description: The server cannot find the requested resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode404'
        '422':
          description: The request contains invalid parameters. See errors for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ResourceSubSipEndpointCreateStatusCode422'
        '500':
          description: An internal server error occurred.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Types.StatusCodes.StatusCode500'
      tags:
      - SIP Credentials
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ResourceSipEndpointAssignRequest'
components:
  schemas:
    ResourceSipEndpointUpdateStatusCode422:
      type: object
      required:
      - errors
      properties:
        errors:
          type: array
          items:
            $ref: '#/components/schemas/Types.StatusCodes.RestApiErrorItem'
          description: List of validation errors.
      unevaluatedProperties:
        not: {}
      description: The request contains invalid parameters. See errors for details.
      examples:
      - statusCode: 422
        errors:
        - type: validation_error
          code: invalid_parameter_value
          message: 'encryption must be one of: disabled, optional, required'
          attribute: encryption
          url: https://signalwire.com/docs/apis/error-codes
    ResourceSubSipEndpointCreateStatusCode422:
      type: object
      required:
      - errors
      properties:
        errors:
          type: array
          items:
            $ref: '#/components/schemas/Types.StatusCodes.RestApiErrorItem'
          description: List of validation errors.
      unevaluatedProperties:
        not: {}
      description: The request contains invalid parameters. See errors for details.
      examples:
      - statusCode: 422
        errors:
        - type: validation_error
          code: missing_required_parameter
          message: username is required
          attribute: username
          url: https://signalwire.com/docs/apis/error-codes
    Types.StatusCodes.StatusCode401:
      type: object
      required:
      - error
      properties:
        error:
          type: string
          enum:
          - Unauthorized
      unevaluatedProperties:
        not: {}
      description: Access is unauthorized.
    SipEndpointAddressListResponse:
      type: object
      required:
      - data
      - links
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/FabricAddressCall'
          description: An array of objects that contain a list of SIP Endpoint Addresses
        links:
          allOf:
          - $ref: '#/components/schemas/SipEndpointAddressPaginationResponse'
          description: Object containing pagination links
      unevaluatedProperties:
        not: {}
    FabricAddressCall:
      type: object
      required:
      - id
      - name
      - display_name
      - cover_url
      - preview_url
      - locked
      - channels
      - created_at
      - type
      properties:
        id:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: Unique ID of the Fabric Address.
          examples:
          - 691af061-cd86-4893-a605-173f47afc4c2
        name:
          type: string
          description: Name of the Fabric Address.
          examples:
          - justice-league
        display_name:
          type: string
          description: Display name of the Fabric Address.
          examples:
          - Justice League
        cover_url:
          type: string
          description: Cover url of the Fabric Address.
          examples:
          - https://coverurl.com
        preview_url:
          type: string
          description: Preview url of the Fabric Address.
          examples:
          - https://previewurl.com
        locked:
          type: boolean
          description: Locks the Fabric Address. This is used to prevent the Fabric Address from accepting calls.
          examples:
          - true
        channels:
          allOf:
          - $ref: '#/components/schemas/AddressChannel'
          description: Channels of the Fabric Address.
        created_at:
          type: string
          format: date-time
          description: Fabric Address Creation Date.
          examples:
          - '2024-05-06T12:20:00Z'
        type:
          type: string
          enum:
          - call
          description: The display type of a fabric address pointing to call.
          examples:
          - call
      unevaluatedProperties:
        not: {}
      title: Call Address
    SipEndpointResponse:
      type: object
      required:
      - type
      - id
      - username
      - caller_id
      - send_as
      - ciphers
      - codecs
      - encryption
      - call_handler
      - calling_handler_resource_id
      - call_request_url
      - call_request_method
      - call_fallback_url
      - call_fallback_method
      - call_status_callback_url
      - call_status_callback_method
      - call_laml_application_id
      - call_dialogflow_agent_id
      - call_relay_topic
      - call_relay_topic_status_callback_url
      - call_relay_context
      - call_relay_context_status_callback_url
      - call_relay_application
      - call_video_room_id
      - call_relay_script_url
      properties:
        type:
          type: string
          description: A string representation of the type of object this record is.
          examples:
          - sip_endpoint
        id:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier of the SIP endpoint.
          examples:
          - 67075301-69b2-4fc3-8a2c-c95a69a5665e
        username:
          type: string
          description: The username for the SIP endpoint.
          examples:
          - c3p0
        caller_id:
          anyOf:
          - type: string
          - type: 'null'
          description: Friendly Caller ID used as the CNAM when dialing a phone number or the From when dialing another SIP Endpoint.
          examples:
          - C-3P0
        send_as:
          type: string
          description: When dialing a PSTN phone number, you must send it From a number you have purchased or verified. send_as indicates which number this endpoint has set as its origination. random indicates it will randomly choose a purchased or verified number from within the project.
          examples:
          - random
        ciphers:
          type: array
          items:
            type: string
          description: A list of encryption ciphers this endpoint will support.
        codecs:
          type: array
          items:
            type: string
          description: A list of codecs this endpoint will support.
        encryption:
          type: string
          enum:
          - default
          - required
          - optional
          description: Whether connections to this endpoint require encryption or if encryption is optional.
          examples:
          - required
        call_handler:
          anyOf:
          - $ref: '#/components/schemas/SipEndpointCallHandler'
          - type: 'null'
          description: What type of handler you want to run on inbound calls.
          examples:
          - ai_agent
        calling_handler_resource_id:
          anyOf:
          - $ref: '#/components/schemas/uuid'
          - type: 'null'
          description: The unique identifier of the calling handler resource.
          examples:
          - fe4093d9-58c2-4931-b4b9-5679f82652c6
        call_request_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the LaML URL to access when a call is received. This is only used (and required) when call_handler is set to laml_webhooks.
        call_request_method:
          anyOf:
          - type: string
            enum:
            - GET
            - POST
          - type: 'null'
          description: A string representing the HTTP method to use with call_request_url. Valid values are GET and POST.
          examples:
          - POST
        call_fallback_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the LaML URL to access when the call to call_request_url fails. This is only used (and required) when call_handler is set to laml_webhooks.
        call_fallback_method:
          anyOf:
          - type: string
            enum:
            - GET
            - POST
          - type: 'null'
          description: A string representing the HTTP method to use with call_fallback_url. Valid values are GET and POST.
          examples:
          - POST
        call_status_callback_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing a URL to send status change messages to. This is only used (and required) when call_handler is set to laml_webhooks.
        call_status_callback_method:
          anyOf:
          - type: string
            enum:
            - GET
            - POST
          - type: 'null'
          description: A string representing the HTTP method to use with call_status_callback_url. Valid values are GET and POST.
          examples:
          - POST
        call_laml_application_id:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the ID of the LaML application to forward incoming calls to. This is only used (and required) when call_handler is set to laml_application.
        call_dialogflow_agent_id:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the ID of the Dialogflow agent to forward incoming calls to. This is only used (and required) when call_handler is set to dialogflow.
        call_relay_topic:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the Relay topic to forward incoming calls to. This is only used (and required) when call_handler is set to relay_topic.
          examples:
          - office
        call_relay_topic_status_callback_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing a URL to send status change messages to. This is only used (and required) when call_handler is set to relay_topic.
          examples:
          - https://myapplication/handle_relay_callbacks
        call_relay_context:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the Relay context to forward incoming calls to. This is only used (and required) when call_handler is set to relay_context.
        call_relay_context_status_callback_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing a URL to send status change messages to. This is only used (and required) when call_handler is set to relay_context.
          examples:
          - https://myapplication/handle_relay_callbacks
        call_relay_application:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the Relay application to forward incoming calls to. This is only used (and required) when call_handler is set to relay_application.
        call_video_room_id:
          anyOf:
          - $ref: '#/components/schemas/uuid'
          - type: 'null'
          description: A string representing the ID of the Video Room to forward incoming calls to. This is only used (and required) when call_handler is set to video_room.
        call_relay_script_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing a URL of a SWML script to respond to incoming calls. This is only used (and required) when call_handler is set to relay_script.
          examples:
          - https://dev.signalwire.com/relay-bins/f9d13f68-f71e-4042-95bb-b07b9e2f2f92
      unevaluatedProperties:
        not: {}
      description: Response containing a single SIP endpoint.
    Ciphers:
      type: string
      enum:
      - AEAD_AES_256_GCM_8
      - AES_256_CM_HMAC_SHA1_80
      - AES_CM_128_HMAC_SHA1_80
      - AES_256_CM_HMAC_SHA1_32
      - AES_CM_128_HMAC_SHA1_32
    Types.StatusCodes.RestApiErrorItem:
      type: object
      required:
      - type
      - code
      - message
      - url
      properties:
        type:
          type: string
          description: The category of error.
          examples:
          - validation_error
        code:
          type: string
          description: A specific error code.
          examples:
          - invalid_parameter
        message:
          type: string
          description: A description of what caused the error.
          examples:
          - Name must be present
        attribute:
          anyOf:
          - type: string
          - type: 'null'
          description: The request parameter that caused the error, if applicable.
          examples:
          - name
        url:
          type: string
          description: A link to documentation about this error.
          examples:
          - https://signalwire.com/docs/apis/error-codes
      unevaluatedProperties:
        not: {}
      description: Details about a specific error.
    ResourceSipEndpointResponse:
      type: object
      required:
      - id
      - name
      - type
      - cover_url
      - preview_url
      - channels
      properties:
        id:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier of the SIP endpoint.
          examples:
          - 3fa85f64-5717-4562-b3fc-2c963f66afa6
        name:
          type: string
          description: The name for the SIP endpoint.
          examples:
          - sip_user
        type:
          type: string
          enum:
          - call
          description: The Resource type
          examples:
          - call
        cover_url:
          anyOf:
          - type: string
            format: uri
          - type: 'null'
          description: The cover URL for the SIP endpoint.
          examples:
          - https://example.com/cover.jpg
        preview_url:
          anyOf:
          - type: string
            format: uri
          - type: 'null'
          description: The preview URL for the SIP endpoint.
          examples:
          - https://example.com/preview.jpg
        channels:
          allOf:
          - $ref: '#/components/schemas/AddressChannel'
          description: An object containing the resource addresses with the specified comunication channels
      unevaluatedProperties:
        not: {}
    SipEndpoint:
      type: object
      required:
      - type
      - id
      - username
      - caller_id
      - send_as
      - ciphers
      - codecs
      - encryption
      - call_handler
      - calling_handler_resource_id
      - call_request_url
      - call_request_method
      - call_fallback_url
      - call_fallback_method
      - call_status_callback_url
      - call_status_callback_method
      - call_laml_application_id
      - call_dialogflow_agent_id
      - call_relay_topic
      - call_relay_topic_status_callback_url
      - call_relay_context
      - call_relay_context_status_callback_url
      - call_relay_application
      - call_video_room_id
      - call_relay_script_url
      properties:
        type:
          type: string
          description: A string representation of the type of object this record is.
          examples:
          - sip_endpoint
        id:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier of the SIP endpoint.
          examples:
          - 67075301-69b2-4fc3-8a2c-c95a69a5665e
        username:
          type: string
          description: The username for the SIP endpoint.
          examples:
          - c3p0
        caller_id:
          anyOf:
          - type: string
          - type: 'null'
          description: Friendly Caller ID used as the CNAM when dialing a phone number or the From when dialing another SIP Endpoint.
          examples:
          - C-3P0
        send_as:
          type: string
          description: When dialing a PSTN phone number, you must send it From a number you have purchased or verified. send_as indicates which number this endpoint has set as its origination. random indicates it will randomly choose a purchased or verified number from within the project.
          examples:
          - random
        ciphers:
          type: array
          items:
            type: string
          description: A list of encryption ciphers this endpoint will support.
        codecs:
          type: array
          items:
            type: string
          description: A list of codecs this endpoint will support.
        encryption:
          type: string
          enum:
          - default
          - required
          - optional
          description: Whether connections to this endpoint require encryption or if encryption is optional.
          examples:
          - required
        call_handler:
          anyOf:
          - $ref: '#/components/schemas/SipEndpointCallHandler'
          - type: 'null'
          description: What type of handler you want to run on inbound calls.
          examples:
          - ai_agent
        calling_handler_resource_id:
          anyOf:
          - $ref: '#/components/schemas/uuid'
          - type: 'null'
          description: The unique identifier of the calling handler resource.
          examples:
          - fe4093d9-58c2-4931-b4b9-5679f82652c6
        call_request_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the LaML URL to access when a call is received. This is only used (and required) when call_handler is set to laml_webhooks.
        call_request_method:
          anyOf:
          - type: string
            enum:
            - GET
            - POST
          - type: 'null'
          description: A string representing the HTTP method to use with call_request_url. Valid values are GET and POST.
          examples:
          - POST
        call_fallback_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the LaML URL to access when the call to call_request_url fails. This is only used (and required) when call_handler is set to laml_webhooks.
        call_fallback_method:
          anyOf:
          - type: string
            enum:
            - GET
            - POST
          - type: 'null'
          description: A string representing the HTTP method to use with call_fallback_url. Valid values are GET and POST.
          examples:
          - POST
        call_status_callback_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing a URL to send status change messages to. This is only used (and required) when call_handler is set to laml_webhooks.
        call_status_callback_method:
          anyOf:
          - type: string
            enum:
            - GET
            - POST
          - type: 'null'
          description: A string representing the HTTP method to use with call_status_callback_url. Valid values are GET and POST.
          examples:
          - POST
        call_laml_application_id:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the ID of the LaML application to forward incoming calls to. This is only used (and required) when call_handler is set to laml_application.
        call_dialogflow_agent_id:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the ID of the Dialogflow agent to forward incoming calls to. This is only used (and required) when call_handler is set to dialogflow.
        call_relay_topic:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the Relay topic to forward incoming calls to. This is only used (and required) when call_handler is set to relay_topic.
          examples:
          - office
        call_relay_topic_status_callback_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing a URL to send status change messages to. This is only used (and required) when call_handler is set to relay_topic.
          examples:
          - https://myapplication/handle_relay_callbacks
        call_relay_context:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing the Relay context to forward incoming calls to. This is only used (and required) when call_handler is set to relay_context.
        call_relay_context_status_callback_url:
          anyOf:
          - type: string
          - type: 'null'
          description: A string representing a URL to send status change messages to. This is only used (and required) whe

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