Connect 128Kbps Using Ndiswan - D-Link DU-128TA+ User Manual

B. Connect 128Kbps using NDISWAN
If you select NDISWAN (D-Link NDISWAN-Line0X ) as your device then can
bind the other device for multilink (128Kbps). To establish a 128Kbps
(multi-link PPP) connection, please proceed as follows:
Right-click on the "ISDN TA" icon and select the "Properties".