Setting up new Clarity C4230 phone and extra handset, but cannot get dial tone.  Other phones get dial tone on same line, so it's phone setup issue. Even after re-registering main handset to main base,  using register menu and waiting for beep, main handset screen still identifies itself as handset #2.  And re-registered auxiliary handset seems to identify itself as handset # 3 or #4.  Is there any way to "clear," or "reset," all handset registrations, before re-registering them thru normal menu procedure? I'm guessing the I am, for some reason, failing to properly register, match up, each handset to base, resulting in dial tone not coming thru on either. Either than are phone is defective and simply does not pick up dial tone at all? Any suggestions? Thanks.

Lands Phones - Clarity - C4230 Cordless Phone