It allows you to send and receive instant messages with Microsoft Lync.
Microsoft Lync 2010 Conversation Translator allows you to send and receive instant messages with Microsoft Lync using the Microsoft Bing translation service.
Once installed you can find Conversation Translator on the More options >> menu in a Lync conversation. Be sure to enable Microsoft Lync 2010 Conversation Translator before you need it. For privacy reasons Microsoft Lync 2010 Conversation Translator cannot access messages that you received prior to it being started.