User Guide for the SIP-T48S IP Phone
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To adjust the volume when the phone is during a call:
1. Press to adjust the volume of currently engaged audio device (handset,
speakerphone or headset).
You can also press to adjust the volume when playing back the recording calls. For
more information, refer to Playing Back Recorded Calls on page 194.
Ring Tones
Ring tones are used to indicate incoming calls. You can select different ring tones to distinguish
different accounts registered on your phone, or to distinguish your phone from your neighbor’s.
To select a ring tone for the phone via phone user interface:
1. Tap ->Basic->Sound->Ring Tones->Common.
2. Tap the desired ring tone.
3. (Optional.) Press to adjust the ringer volume.
4. Tap the Save soft key to accept the change or to cancel.
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