Telephoning
General Functions
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Least Cost Routing (LCR)
Whenever you make an external call, your system automatically uses LCR to
set up a connection to a network operator that has been selected by the
system administrator. If you do not wish to use this preferred connection and
want to select a network operator yourself for each call (i.e. on a call-by-call
basis), then before making the call, select the
LCR off
entry from the menu
described in the section entitled
MenuCard “Selection” in the Idle State
.
This is only necessary if LCR has been configured for you in the Forum 500 /
Forum 5000. Consult your system administrator about this.
Note:
Baby call and external call forwarding are not automatically
switched via preferred connections. In this case, if the network
operator you wish to use is not the default operator, you can
key in the appropriate operator’s code digits before entering the
call number.
Transmission of Call Numbers
With ISDN there are different features which allow or prevent the trans-
mission of (external) call numbers between subscribers.
“CLIP” Feature
“CLIP” is an abbreviation for “Calling Line Identification Presentation”. The
caller’s call number (if transmitted) is displayed by means of the corre-
sponding call key. If this number is also stored in your telephone book, the
caller’s name is displayed.
“CLIP no screening” Feature
Using “CLIP no screening” outgoing connections instead of sending the real
call number of the caller, send another call number. Thus, instead of being
shown your number, the subscriber you have called is shown, for example, a
service call number. The feature “CLIP no screening” must be enabled by the
network provider and activated in the system configuration by the system
administrator. When you receive an external call where the caller indicates a
different number than the one actually being transmitted, your display will
show a “?” next to the call number. If the indicated call number is saved as a
phone book entry, as usual, the name will be shown along with a question
mark.