Setting For Isdn; Switch Type; Analog Coding - D-Link DU-128TA+ User Manual

Usb isdn ta

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3-3. Setting for ISDN

The USB ISDN TA supports "Normal Switch", "DDI point to point switch" and

"DDI point to multipoint switch". You can use the default setting, "Normal

Switch", as your switch type. If your local switch provider has already

informed you that your switch type is DDI ( Direct Dial In), you shall select the

DDI switch type for using the USB ISDN TA.

This is for analog coding method. It is A-law in Europe, u-law for USA and

Taiwan. For other area, please make sure what analog coding method is

being adopted by your local Telecom. Otherwise, there will have problems for

Fax, V.23 and V.22 connection.

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