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Convenient and secure telephone communication, Dtmf signalling, Keypad signalling – Siemens 70isdn User Manual

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Convenient and secure telephone communication

61

kap09.fm5

Profiset 70isdn, GB: A30853-X300-B501-3-7619

20.5.99

Sending info texts

Prerequisite: "info text" is permitted (➔ page 25).

Reading info texts

The LED for the "read info text" feature key flashes when

an info text is received (a programmed function key is a

prerequisite ➔ page 42). The message "Info" is displayed.

Prerequisite: "info text" is permitted (➔ page 25).

DTMF signalling

When a connection is set up, you can use the keypad to

transmit DTMF signals (tones in dual-tone multifrequen-

cy), e.g. to control an answering machine remotely.

Prerequisite: a connection is set up.

Keypad signalling

Instead of DTMF signalling, keypad information elements

(IE) can also be transmitted, e.g. in order to activate CEN-

TREX features (➔ page 63).

Since DTMF signalling is set by default for your tele-

phone, it must first be deactivated. To do this, program a

feature key (➔ page 42) with the function "24=DTMF sig-

nals off?".

Prerequisite: a line has been seized, a connection set up,

or an existing connection has not yet been cleared down.

>

Service?

? >

4=feature keys

? >

19=send info text

?

<>

and

?

Select and confirm info text.

Press the "info text" key. The info text is displayed two

lines at a time. In the case of long directory numbers, the

info text is represented as a run-on text.

read info text

o

Enter the control digits. The digits entered appear on the

display preceded by "D:" for several seconds.

Press the programmed feature key "DTMF signals: off".

o

Enter control codes. The digits entered are shown on the

display.

DTMF signals: off