OptionaldialThe amount of time that a phone will ring.
OptionalinterceptionThe maximum time that a phone call verification will be active and can be completed. If the phone number hasn't been verified successfully during this time, then the verification request will fail. By default, the Sinch dashboard will automatically optimize dial time out during a phone call.
An optional configuration for Flash Call Verification, should be used only when the verification request originates from your backend (not an end user device) and request is signed via an Application signed request.