Two Line Setup Angst

[FredFlintstone]

Ok, maybe I am missing something simple here.  I'm moving from a Talkswitch to an Obihai202.  I have a VOIP provider babytel that gives me two phone numbers - one for phone and one for fax.  Anyway I enter the  'AuthUserName' and 'AuthPassword' for the first line on SP1.  I enter the same info on SP2 for the second line, but it does not have a 'lineid' field like talkswitch does.  How to I tell Obihai phone number 1 registers on SP1 and phone number 2 registers on SP2 without entering the phone number/line id?  Both SP1 and SP2 show registered and when I call phone number 1 it rings.  But calling phone number 2 fails (apparently because it's not registered according to Babytel)...  This has to be a very simple setup... Thanks for any help!! Signed puzzled....