Technical data

4.2 Phones and Devices 65
4.2.5 Edit ISDN Device
The HorstBox allows for up to four ISDN devices to be connected.
All four devices are already configured. Adjust those settings to
your needs. Use an ISDN hub, if you need to connect more than
one ISDN device.
To edit the settings of an ISDN device click on EDIT.
In the field NAME enter an unique name for the phone.
For internal calls dial * * (double asterisk) as a prefix, e.g. * *
2 2 to call the MSN 21. You may configure several ISDN devices
to answer to the same MSN. For outgoing calls simply dial the
phone number.
Choose the default account and the fallback account.
Choose one or more comfort options, see 4.2.2 Comfort Options
on p.59.
To save the settings, click on SAVE.
Saving successfully is reported in a success message (green
frame).
If an error occurs you will see an error message (red frame).
Change the settings in the box with the red frame and again click
on SAVE.
To cancel the dialog, click on CANCEL. The previous page will be
displayed.
4.2.6 Configure ISDN Device
Next you have to configure your ISDN device(s) to answer to
an internal MSN, as set up before. Please refer to the devices
documentation.
One ISDN device may answer to several MSN and two devices
may answer to the same MSN.