Aastra DT390 User Manual page 28
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Also See for DT390:
- Quick reference manual (160 pages) ,
- User manual (121 pages) ,
- Quick reference manual (56 pages)
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DT390 D
ESCRIPTION
Tone (Cont.) Description (Cont.)
Special dial
tone
Ringing tone
or queue tone
Busy tone
Congestion
tone
Number
unobtainable
tone
Call waiting
tone
Intrusion tone
Conference
every 15 seconds (to all parties)
tone
Verification
tone
Warning tone,
expensive
route
1424-EN/LZT 103 087 Uen G 2014-04-14
28
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