Oki OKIFAX 5750 Service Manual page 307

2.9.2.5 TAD mode
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TAD: Telephone Answering Device
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TAD can be connected to external telephone terminal to record your messages.
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TAD records your speech and switches an automatic voice message response to the calling station.
Note 1:
A choice of TAD mode is available by technical Function (Setup No.06).
Note 2:
The predetermined time is selectable between 20 or 30 sec.
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TAD mode flow chart
In case of TYPE 1;
Even though the fax does not detect CNG signal, the fax will go to receiving mode.
Service Guide OKIFAX 5750/5950
Chapter 2 Installation
Page: 112