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5.4 What is This Tone?
Appendix
273
When going off-hook [SA]
Ring Tone 5 / Hold Recall
Tone
<SLT>
• An intercom call is
ringing.
• An intercom call is held
for more than a specified
time (default: 60
seconds).
Ring Tone 6 / Hold Recall
Tone
<SLT>
• An outside call is
ringing.
• An outside call is held for
more than a specified
time (default: 60
seconds).
Ring Tone 7
<SLT>
• A doorphone call is
ringing.
• The pre-set alarm time
has arrived (Timed
Reminder).
Ring Tone 8
<SLT>
• A reserved outside line
or extension became
idle
(Automatic Callback
Busy).
Dial Tone 1
Normal (No features stated in
Dial Tone 2 through 4 are set.)
3 s
3 s
3 s
3 s
1 s