No, TM will install a new fibre optic line for your UNIFI, the FO line serves internet, IPTV and VOIP all at the same time. You can cancel your fixed line (copper line) and Streamyx after that if you want, i did that.

im from putrajaya presint 8.  Have been using unifi few weeks ago. Registration is prompt, waiting period for installation 5-7 days.  But you have to call the unifi support to make sure that they received your order.

Check outside your house if you have those greenbox at the side of your street. Those are fiber distribution point.