DETEWE OPENPHONE 52, Руководство пользователя

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Features
Call Filter
Features
Other features are specific to your
OpenPhone 52, e.g. call filter, trans-
mission of your telephone number
during calls, call charge display,
telephone lock, etc. The following
sections describe how to use the
various ISDN and OpenPhone 52
features. Your OpenPhone 52 and your ISDN
line offer many functions above and
beyond simply making calls. Some
of these features are network servic-
es, e.g. call forwarding, conference
calls, display of caller telephone
numbers, etc., which you can use on
your terminal.
Call Filter
You can activate a call filter if you
wish. If the filter is active, calls are
only signalled if the caller is listed in
the telephone book.
The call filter treats all calls in the
same way, even calls arriving during
another call (call waiting).
Press the
Menu
softkey.
Select the Terminal menu with the
arrow keys and then press the
Trminal
softkey.
Select the
FiltOn
or
FiltOff
softkey.
The call filter is activated or deacti-
vated accordingly.
Depending on whether the filter is
active or inactive the
FiltOn
or
FiltOff
softkey, with which you
can set the relevant state, is visible.
Calls where the caller withholds
his/her telephone number are never
signalled when the call filter is
active as there is no telephone
number available to compare with a
telephone book entry.
By pressing the
≥
arrow key you
can see that the feature is active.
Making a Call
Keypad Protocol
DTMF Post-Dialling /
Remote Answerphone
Access
If a connection is live, you can use
the digit keys and the
±
and
‘
keys to send standardised DTMF sig-
nals, e.g. to control answerphones,
voicemail systems, etc.
You are making a call and want, for
example, to access an answerphone.
Press the digit keys. The relevant
DTMF signals are produced.
Keypad Protocol
If you press the digit keys during a
call your OpenPhone 52 produces
the standardised DTMF signals used
for controlling answerphones or
entering messages for paging serv-
ices. You can, however, also convert
the keys to the keypad protocol, e.g.
to control new ISDN services in the
exchange.
You are making a call.
Press the
DTMFoff
softkey. The
keypad now no longer sends DTMF
signals, but keypad protocol codes
instead.
Press the
DTMFon
softkey to return
to DTMF transmission.