4
Sounds
Your phone makes different sounds to let you know what’s
going on. Rings occur on a line that you are not using to indicate
that you have an incoming call. Tones occur while you are using
your phone and provide information about calls and features.
Table 2. Rings
Sound Meaning
Single (repeated)
Internal or Emergency
call
Double (repeated) External call
Triple (repeated) Callback
Table 3. Tones
Sound Meaning
Busy tone The party you called is
on the phone.
Dial tone You can make a call or
invoke a feature.
Fast busy tone Invalid call
Short tone every 20
secs.
Internal call waiting
3 short tones (confir-
mation tone)
A feature has been suc-
cessfully 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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