well I previously was using COX cable which supplied me with internet, cable, and phone. Under that setup I had all of my analog phones connected and running off of the RJ-11 port on my Cox modem in my server closet.
Now I have a VOIP account with Broadvoice which I set up on my core. I took the analog phone line out of the port on my Cox modem and plugged it into the HT-286. So it is just a standard analog phone line.
HTH,
-Krys