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Option: MAGIC DC7/AC1 Keypad
6.5 ISDN alarm messages in the display
If the connection cannot be established, ISDN provides a variety of alarm
messages. Please have a look at the table below for an explanation. The LCD
display indicates the relevant B channel first followed by the alarm message.
TAB. 5 ISDN ALARM MESSAGES
Alarm message Description
Unassigned number The number is not known by the ISDN network. Please
check your entry.
No route Usually, the ISDN network is overloaded when this alarm
message occurs.
Normal call clearing The connection has been dropped.
User busy The remote side is busy.
No user responding The partner is not responding. Maybe the call was made
with the wrong service indicator.
Call rejected The call was rejected. Maybe the remote side rejected your
call.
Number changed The number you called has been changed.
Destination ouit of order The remote side is not ready. Maybe the system is turned off.
Invalid number format Invalid number format.
No channel available Maybe both B channels are already busy (also with e.g. other
systems connected to the ISDN bus).
Network out of order Please check your ISDN connection.
Service indicator error The required service indicator is not available.
ISDN error: x General ISDN error because of reason x.
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