Merlin 3070 Service And Maintenance Manual page 76

TROUBLE ON SEVERAL TELEPHONES
Dialing
Symptom:
Dial tone is not present on a particular line but is heard on other lines.
Possible Cause
1 . Local telephone company line
is faulty.
B2-4
Recommended Action
1 . Verify local telephone company line operation
by plugging in a basic telephone at the
network interface or jack field line jack.
If dial tone is not present, arrange for the local
telephone company to repair the line.