We have no issue with Blind but Attended transfers elude us. Phones are T48 3CX is v12 If you push "Trfr", dial an extension, you get a blind transfer. If you push "hold" then "trfr" then an extension.... you get a blind transfer. This link - http://www.3cx.com/blog/voip-howto/blind-attended-transfer-yealink/ - is wrong, it says Hold then Trfr the "New Call" but there is no NewCall button. This link - http://www.3cx.com/blog/voip-howto/blind-attended-transfer-yealink-t48-t46/ - is wrong. After pressing "new call" and dialing the target extension, *I* get hold music, the caller has had hold music since "hold", and the recipient extension has a ringing tone (from, presumably, his voicemail).