Multimedia spam determination using speech conversion

Determining unwanted multimedia message originated from a multimedia call. An interface receives a multimedia message from a telecommunication service operator, and multimedia message is stored on a storage area. A unified communication system manages communication message delivery to at least one of the following access points for the recipient, and the unified communication system includes a processor configured to execute computer-executable instructions for identifying a voice portion from content of the received multimedia message. An anti-spam engine is applied to analyze a textual representation of the identified voice portion, and a confidence ranking of the representation is generated in response to the analyzed representation. It is determined whether the multimedia message is an unwanted multimedia message as a function of the confidence ranking and the analyzed representation.