Technical data

4.9 How To Telephone 81
4.9 How To Telephone
Note: Diverting calls to external numbers may cause additional
costs.
Please refer to the documentation of your phones to find out
which features they support. Sometimes your telephone service
provider has to (de-)activate certain features.
After you have connected and set up all devices to the HorstBox
and added all neccessary (dial or call) rules, you may now use the
phones. Internal calls are free, while external calls may generate
costs.
Most of the known ISDN services will function with the HorstBox
as well, even with analog phones, as long as they provide the
necessary funcions, e.g. a display.
Some of the HorstBox’s PBX funcions can be configured via the
keys of a phone in addition to the graphical user interface (see
overview 4.10 How to control the HorstBox via a phone on p.86
at the end of this chapter).
4.9.1 Answering A Call
You may answer in-bound calls on any registered phone. If due
to call rules a phone does not ring, pick up the receiver and dial
* 8 2 .
4.9.2 Internal Calls
You can do internal calls between all registered phones.
For internal calls first press * * , then dial the internal phone
number (MSN).
The quantity of internal phone numbers depends on how many
devices were registered with the HorstBox.