Aastra Dialog 4223 Professiona User Manual page 17

Internal ringing signal
External ringing signal
Automatic Callback signal
BusinessPhone — Dialog 4223 Professional / Dialog 3213
Signals
Ringing signals are emitted from the phone.
- repeated after 4 s
- repeated after 4 s
Note: The tones and ringing signals in this guide refer to the
standard system but may vary between countries.
Description
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