TransUnion Verification Service API
Currently, a RESTful API client is required to provide an 'apiKey' query parameter with a pre-provisioned value to access API calls that are restricted. If the 'apiKey' parameter is not specified, the client IP address may be used as the backup authentication mechanism if pre-provisioned. Three different API entry points are defined for SIP Identity header verification: * Accepts requests in JSON format and produces responses in JSON format * Accepts text messages and produces responses in JSON format * Accepts text messages and produces responses in SIP format