Lucent Technologies 8.2 User Manual

Page of 1707
DEFINITY ECS Release 8.2
Administrator’s Guide  
555-233-506  
Issue 1
April 2000
Features and technical reference 
1197
Call Charge Information 
20
Int-ISDN (International ISDN expanded)
Int-process 
Unformatted (Enhanced 24-word standard ASCII)
If you want call charges to restart at 0 for calls that are forwarded or 
transferred, administer Outg Trk Call Splitting.
Attendant consoles
Automatic Charge Display Mode does not apply to attendant consoles. The 
attendant must always press a button to enter display mode. 
Performance impact
Call Charge Information can impact system performance in several ways. The 
information coming in over ISDN trunks takes up bandwidth, and reduces the 
maximum amount of traffic the ISDN D-channel can handle. This is especially 
true in countries such as Germany and France, where the network sends charging 
information updates as often as every 3 to 10 seconds for each active international 
call.
The number of sets that display charge information and the frequency of updates 
also affect performance. Normally, the update frequency should match the average 
rate at which call charge updates are received from the public network.
!
CAUTION:
Updating displays too frequently can cause unnecessary system 
performance degradation. If performance slows to an unacceptable rate, you 
may need to lengthen the amount of time between updates.
Button operations
If you administer a button for charge display, the display-set user can press the 
disp-chrg button at any time during the call to see the current charges. If your 
public network sends charge information only at the end of a call, display-set 
users must have this button and press it just before they hang up. After the call 
drops, the charge will appear.
Other display functions
If a user invokes the elapsed-timer display, the timer may overwrite part of the 
charge display. If the user has a local directory (Dir button), and presses this 
button while a call is in charge display mode, the call-charge information will 
overwrite the directory any time an update comes in. To avoid this, the user must 
press Exit or Normal.