Sorry, but your post is still confusing/confused. You've got several different issues colliding here: DSL service wiring, and how to use a OBi 202's two different PHONE ports.
Let's start with telephone wiring. DSL service piggy-backs a higher-frequency signal on top of the same two-wire pair of copper wires coming from the phone company, that also carry the lower-frequency human voice. There are different types of installations, depending on the hardware your telco uses, and how long ago it was installed. The "big picture" is that the main connection from the telco has both signals on the wire pair, and you
must remove the high-frequency data signal from that pair
before connecting it to any telephone equipment. There are a couple ways this is done. In some cases, the DSL filter is installed in the telco's "demarcation" or demarc box, with clearly-labeled RJ-11 jack(s) for your telephone service. In other installations, the combined signals are fed all throughout the house, and filters must be installed inline on each telephone plugged into the wall jacks.
So: if you want to remove your telco's telephone service from your house wiring, how that's done depends on how your house was wired. If you attempt to connect your OBi's PHONE port(s) to the combined DSL/voice wiring, it won't work correctly. We can't tell you exactly how to re-wire things because we're not there, looking at your demarc box, etc. You'll have to figure it out.
One way: DSL is filtered out at the demarc, or at the DSL modem, and you plug telephone(s) and your OBi PHONE port into the centrally-filtered jack(s). Another way: the signal isn't split and filtered at the demarc, so you must install a DSL filter in-line with the OBi's PHONE jack, and with any telephone bases you use. The third way: don't use your house wiring at all for telephones. Plug the cordless phone base station's telephone cord directly into the OBi's PHONE jack.
Now, as for your OBi 202: it has two different PHONE jacks, that are
not the same. You can configure your OBi such that one or more of the up-to-four service providers you have set up, will ring on one or the other or both of the PHONE 1 and / or PHONE 2 jacks.
See my discussion here for more details on connecting two different telephone lines to one OBi 202:
http://www.obitalk.com/forum/index.php?topic=10526.0