Aastra Dialog 4220 Dialog 4220 Lite for BusinessPhone, user guide - Page 13
Signals, Internal ringing signal, Automatic Callback signal
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Description Internal ringing signal Signals Ringing signals are emitted from the phone. - repeated after 4 s External ringing signal - repeated after 4 s Automatic Callback signal Note: The tones and ringing signals in this guide refer to the standard system but may vary between countries. BusinessPhone - Dialog 4220 Lite / Dialog 3210 13
13
BusinessPhone – Dialog 4220 Lite / Dialog 3210
Description
Signals
Ringing signals are emitted from the phone.
Note:
The tones and ringing signals in this guide refer to the
standard system but may vary between countries.
Internal ringing signal
- repeated after 4 s
External ringing signal
- repeated after 4 s
Automatic Callback signal