How do I transfer a call directly to voicemail?
Perform a blind transfer and instead of dialing just the extension number, dial 7 before the extension number (7+ext) . For example, if the extension is 123 you would dial 7+123 or simply 7123. Then, on most Yealink phones, the process to transfer a caller directly to voicemail would look like this: Transfer Button->7123->Transfer Button Easy-peasy!!