ADTRAN ISU 2X64 user manual Setting the Dial Options

Chapter 6. Configuration

Feature buttons are buttons that are normally available on ISDN telephone sets. The ISU 2x64 simulates pressing a feature button when the Busy Out Port option is changed. When the Busy Out Port option is changed, the ISU 2x64 sends a Feature Activation message to the switch using the feature button number stored in S-register 23. If S-register 23 is not programmed with the correct button number for the Make Busy feature, the switch will not change the busy status of the ISU 2x64. The telephone company will need to tell you which feature button number was assigned to the Make Busy feature.

Enabled

To turn on the Make Busy feature, configure Busy Out Port for

Enabled.

Disabled

To turn off the Make Busy feature, configure Busy Out Port for

Disabled.

Multi-point lines must be used for per-port operation of the Busy Out Port feature.

Setting the Dial Options

The ISU 2x64 can be configured to dial using the Front Panel, RS- 366 port, AT Commands, or V.25 bis Commands.

Front Panel

To establish and disconnect calls from the front panel keypad configure Dial options for Front Panel. See Front Panel Dialing Options on page 63 for more detail.

RS-366

Configuring the ISU 2x64 for RS-366 enables out-of-band dialing over the RS-366 port. To establish and disconnect calls using the

34 ISU 2x64 Dual Port ISDN Service Unit User Manual 61200051L1-1D