Distinctive call waiting based on a redirecting number

摘要

A method includes receiving a query message at a controller communicatively coupled to a destination device. The query message includes inbound call data associated with a call to the destination device. The method includes determining that the call to the destination device is from a redirecting number based on the inbound call data. The redirecting number is compared to an authorized set of numbers. When the authorized set of numbers includes the redirecting number, the controller formulates a response message to the query message. The response message includes a distinctive tone for use at the destination device that is identified based on the redirecting number. The response message is sent as a reply to the query message.