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4.8.4.
Time out
Set up the no answer forwarding time. When the call is beyond the time
(the default is 30 seconds) without answering, it will forward to the target
number. The range value is 0 to 120 second.
4.8.5.
Do Not Disturb
DND function is to prevent foreign phone from disturbing, if DND is open,
external phone call is unable to call in, and turned off by default.
Configuration on the phone:
1. Phone Settings-> Call Settings-> Do not Disturb
2. Select the desired account on the Account bar.
3. Check to enable Do not Disturb feature.
