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Protection of data link
You are in the middle of sending out several fax messages. The feature »Call waiting« is configured at the connection for your fax machine. If
you receive a call at a different fax device at the same time, data transfer will be interfered with, or even disrupted completely by the call wai-
ting signal.
»Call waiting« is suppressed at the analog port for fax devices to ensure correct data exchange at all times and to prevent any possible inter-
ference signal.
You can define certain types of terminal devices for analog ports in PC Configuration. As soon as you specify an different type of connection
than »Telephone«, e. g.»Modem« or »fax group 3«, the call waiting function will be deactivated for that connection.
Emergency call priority
For »Emergencies«: Emergency numbers are not affected by any call authorization parameters or dial ranges.
For the function »Making calls with direct exchange line access« the external ISDN connection is taken and calling is permitted. If the exter-
nal B channels are busy, a B channel is freed (released) and the parties conducting their call on that channel will hear a busy signal. An emer-
gency call already in progress is not interrupted.
For the function »Making calls without direct exchange line access« the internal connection is busy and internal calls can be made. You must
dial a "0" before making an external call. If all of the external B channels are busy, one B channel is disconnected and the parties conducting
their call on that channel will hear a busy signal. An emergency call already in progress is not interrupted.
If calls are in progress using two ISDN telephones on the same internal ISDN bus, it is not possible to initiate an emer-
gency call from a third ISDN telephone on this bus.
Dial ranges
During configuration you can define restrictions for placing external calls for certain terminal devices.
Dialing regions are not activated in the default settings. In PC configuration you can assign each terminal device individually to call control.
The numbers listed in the Restricted Numbers table (in the Section »Restricted Numbers«) can not be dialed using the analog terminal devi-
ces included in the associated dialing region. For example, the entry of the number »0190« in the list would prevent calls being made to costly
service providers.
The entries in the unrestricted numbers table (in the Section »Unrestricted numbers«) can cancel a portion of the restrictions imposed on
numbers in call restriction.For example, if the number »0190123456« is entered in the unrestricted numbers table, this number may be di-
aled, even if all »0190« numbers have been inhibited by call restriction.
If two identical numbers (identical sequence of digits and same number of digits) are entered as both barred and restricted, then these
numbers can not be dialed.
If the prefix number for a different network service provider is dialed from a number that is inhibited by the dialing region, that dialing regi-
on is not active.
Subscribers without authorization for external calls can obtain the authorization to make external calls to these
numbers.
Another possible setting option is the regional numbers. The users can not make any domestic long-distance or international calls. Ten (10)
special numbers can be configured for these calling privileges; these numbers can be used to make domestic long-distance or international
calls. A special number can consist of a complete phone number or parts of a number (for example the first few digits).
Time acceptance
You can activate or deactive the time acceptance function from the ISDN network. This feature is required, in case the ISDN network does
not transmit the time correctly. In the event of a loss of power, all stored contents (program and application data) are retained in the PABX
without any changes. The internal clock for the PABX system is updated automatically during the next external call (if configured). Activat-
ion of accepting the updated time is set via PC configuration.
Features without user action
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