Attended (Announced) Transfer - Occurs when you want to speak with the person to whom the call is being transferred before actually connecting the original caller to this person. This type of transfer is sometimes referred to as a "warm transfer," "consulted transfer," "supervised transfer," or "announced transfer." It is generally regarded as more professional to perform a warm (announced) transfer.
When you are in a call, you can connect it to a colleague or an external party.
Click on transfer button and choose attended. Call the person you want to transfer the call to and then select transfer