Dahua Digital VTH

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Recent calls
 Call back: Tap a call record to call back.
 Delete: Tap Edit, and then tap Delete to delete a record.
If storage is full, the oldest records will be overwritten. Back up the records as needed.
 Clear: Clear all record in the current tab (All or Missed Call).
4.2.2 Contact
Tap Call > Contact, and then add or edit the users.
Contact
 Add a user.
Tap Add.