Verify that the wall jack has a dial tone.
Connect a regular telephone directly to the wall jack. Lift the handset of the telephone and listen for a dial tone. If there is a dial tone, continue to STEP 4.
If there is no dial tone from the wall jack, test on another phone jack.
If there is still no dial tone, you have a problem with the wall jack or line. You need to contact your local telephone company for service.