Merlin 3070 Service And Maintenance Manual page 73

TROUBLE ON SEVERAL TELEPHONES
Dialing Symptoms
Dial tone is present on all lines, but users cannot dial out on all lines
Dial tone is not present on a particular line but is heard on other lines
Users of 5- and 10-button sets wish to access the ninth and tenth outside lines
Users with basic Touch-Tone telephones hear each Touch-Tone signal twice while
dialing
B2-3
B2-4
B2-6
B2-6
B2-1