Assigns an existing resource as the calling handler for a SIP Credential. Use it when calls placed by the registered SIP device should run that resource’s instructions. This operation does not create a credential; use Create SIP credential first when the device does not yet have one.
Currently only supports calling as a handler and automatically defaults to it.
The API token used to authenticate must have the following scope(s) enabled to make a successful request: Voice, Messaging, Fax, or Video.
SignalWire Basic Authentication using Project ID and API Token.
The client sends HTTP requests with the Authorization header containing the word Basic followed by a space and a base64-encoded string of project_id:token. The project ID will be used as the username and the API token as the password.
Example: