16 Optiset E QRG
Sounds
Your telephone makes different sounds to indicate what is
going on. Rings occur on free lines, indicating an incoming call.
Tones occur while you are using your telephone and provide
information about calls and features.
Table 1: Rings
Table 2: Tones
Sound
Meaning
Single (repeated)
Internal call
Double (repeated)
External call
Triple (repeated)
Callback
Sound
Meaning
Busy tone
The party you dialed is on the
telephone.
Dial tone
You can make a call or invoke a
feature.
Fast busy tone
Invalid call.
Short tone every 20 sec.
Internal call waiting.
3 short tones (confirmation
tone)
A feature has been successfully
activated.
3 short tones followed by dial
tone
Additional input, such as a PIN,
is required.
2 short tones every 20 secs.
External call waiting.
Wavering (error) tone
Invalid feature request.
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