ur unifi now is on fiber right?

the existing tel line can be used, but u have to disconnect the main cable from outside/pole at the "junction box" on ur ceiling/roof.

after that, just connect tel cable from unifi modem to 1 of the tel wall socket which ever nearest.
use splitter if u want to use telephone near the modem.

all other tel wall socket now can be use for ur telephone.

hope this help. 

Initially all telephones were conencted and i tried using only 1 phone but problem still persists, i logged a call to Unifi last night and just 10 mins ago, their technician came and discovered the old phone line apparently was paired again altough it was disconnected. They suspect some other TM technician would have reconnect it back "Itchy Hands". They then dc it again and pair it correctly to my alarm system  as well and it finally work with no issues. Before they left, they even stick a note near my wire joints pole stating "Jangan Usik / kacau kabel"
Thanks alot for your advise and assistance. Appreciate it

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Added on February 28, 2012, 12:22 pm

That's true bro. Finally got it resolved. Thanks for your advise.