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i2021 ISDN Teleset
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2. On this screen you choose the ringing pattern (RingPattern).
This selection returns a screen prompting you to select a ringing pattern
(0-9). As an example, we press the digit 3 on the keypad. We confirm 3
on the following screen and press Accept to enter your choice.
NOTE: Before accepting, the ring volume can be adjusted by
using the volume key and saved by pressing SaVol.