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Signals – AASTRA DT4x2 for BusinessPhone User Guide EN User Manual

Page 23

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23

BusinessPhone – Cordless DT412/DT422/DT432

Description

Signals

Ringing signals are emitted from the phone.

Note: The tones and ringing signals in this User 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