System information

58 LINGO TECHNICIAN’S GUIDE
Tone Analysis Worksheet
Task Result
Simulate dial tone.
Simulate busy tone.
LEARNING CALL PROGRESS TONES
1 Go off-hook on a single-line set.
2 Note how long before the dial tone
begins.
❑ Dial tone begins immediately.
❑ Dial tone begins after _______ seconds.
Adjust system option 570.
1 Go off-hook on a single-line set.
2 Dial the other telephone.
3 Note how long before the ring back
tone begins.
❑ Ring back tone begins immediately.
❑ Ring back tone begins after _______
seconds. Adjust system option 571.
1 Go off-hook on a single-line set. Leave it
off-hook.
2 Go off-hook on the second single-line
set, and dial the busy extension.
3 Note how long before the busy tone
begins.
❑ Busy tone begins immediately.
❑ Busy tone begins after _______ seconds.
Adjust system option 572.
3 Note whether you hear dial tone for a
minimum of five seconds.
❑ Dial tone lasts five seconds.
❑ Dial tone lasts less than five seconds.
Adjust the telephone system programming.
Simulate ring back tone.
4 Note whether you hear the ring back
tone for a minimum of six rings.
❑ Ring back tone lasts six rings.
❑ Ring back tone lasts fewer than six rings.
Adjust the telephone system programming.
❑ Busy tone lasts six tones.
❑ Busy tone lasts fewer than six tones.
Adjust the telephone system programming.
4 Note whether you hear the busy tone
for a minimum of six tones.