User manual

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Advanced settings for voice call functions.
Caller ID: Calling number identification, two methods: FSK, DTMF.
Dialing timeout: the default value is 3 seconds.
Use # to end dialing: Enable or Disable the “Use # to end dialing”.
Call log: Enable or Disable the logs of Missed Call / Incoming Calls / Outgoing Calls
Call Forwarding
Auto-forwarding incoming calls to a designated number in different conditions: All calls / No
Answer / Unreachable / Busy 。
3.2.5.5. Call Waiting
Suspend current call, and be able to talk to a new incoming call.