Dumb question from first time VoIP user

[salukis]

I am very new to BT business and have recently purchased a Hub.  I have successfully activated  my VoIP line and went to plug in my phone but there is no suitable socket to plug it in to.  Do I need a special phone or adapter or something?  Nobody told me about that when they were selling it to me. (BTW I have the free VoIP, when I mean selling I mean selling me the BT virtues).  

Many thanks

Saluki

[alastair]

yes you do. with the BT 2700 you get a "voice doubler" thing. its like the filter but its grey. you need that

[alastair]

it comes with the bt business hub BTW