Siemens 70isdn - Manual (Page 70)

Convenient and secure telephone communication
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kap09.fm5 Profiset 70isdn, GB: A30853-X300-B501-3-7619 20.5.99
Charge display
You must apply to your local network provider for this fea-
ture (premium rate access). There are two methods of
transferring call charge information:
1. Call charge information is only transferred at the end
of the call. If you program a key for displaying charges,
you can extend the display duration while the call
charge information is being displayed.
2. Call charge information displayed during and at the
end of a call. The call charge information is automati-
cally displayed during a call for approx. 3.5 seconds
for each new call charge unit. If you program a key for
displaying charges, you can query charges at any
time.
Tracing a call (MCID)
You can find out the origin of a call, in order for example
to identify a malicious caller. You must apply to your local
network provider for this feature. Your telephone must be
configured accordingly, as otherwise the service will be
rejected with the advisory message "Identification not
possible".
You can use this function in the following situations:
● During a call.
● Call signal is heard, you lift the handset, the caller has
already hung up. You have 20 seconds after the caller
replaced the handset in which to initiate call tracing.
● At the end of the call. The anonymous caller hangs
up. You have 30 seconds in which to initiate call trac-
ing.
On no account must you replace the handset until the
identification is concluded.
You can initiate caller identification if you have pro-
grammed a "Trace" function (➔ page 42).
Press the "Charge display" key. Charge display
The "Charge display" key can be pressed to que-
ry the charges even if "Charge display off"
(➔ page 23) has been programmed.
c Lift the handset.