Technical data

PAGE 85
Option: b-line XT Keypad
– If there is a connection error, the ISDN provides various alarm messages.
Please see the following table for their meanings. The LCD display shows
the relevant B channel first followed by the alarm message.
TAB. 2 ISDN ALARM MESSAGES
Alarm message Description
Unass. number The number is not recognised by the ISDN. Please check your entry
No route No route. When this message appears the ISDN is normally overloaded.
Please dial again.
Normal disc. The connection has been cleared.
User busy The number called is busy.
No user resp. The called number is not responding. Possibly the wrong number was di-
alled.
Call rejected The call was rejected. Possibly the partner has rejected your call.
Number chang. The dialled number has been changed.
Destin. error The called end is not operational. Maybe the unit is switched off.
Inval. number Invalid Number.
No line avai. No B channel available.
No Network No ISDN available. Check your ISDN line.
Netw. failure Temporary ISDN failure.
Congestion ISDN network error. Maybe the wrong ISDN protocol is selected.
Bearer capab. The wanted service is not available.
Bearer serv. The wanted service is not implemented.
Remote disc. Connection has been dropped by the partner
Procedure er. Remote or local ISDN procedure error.
Cannot dial System cannot dial.