Siemens 70isdn - Manual (Page 76)

Convenient and secure telephone communication
64
kap09.fm5 Profiset 70isdn, GB: A30853-X300-B501-3-7619 20.5.99
Internal calls
(country-specific version set to "Italian")
Transmitting keypad information elements (IE) via the keypad
In order to enter keypad information elements for CEN-
TREX features, CENTREX call processing must be set
(➔ page 17).
Because DTMF signalling is the default setting for Profiset
70isdn, this must first be deactivated. To do this, a key
must be programmed with the function "24=DTMF sig-
nals off?" (➔ page 42) .
Prerequisite: a line has been seized, a connection set up,
or an existing connection has not yet been cleared down.
Transmitting character strings as keypad information elements (IE) using a feature key
In order to transmit keypad information elements for CEN-
TREX features using feature keys, CENTREX call process-
ing must be set (➔ page 17).
The key which you wish to use for transmitting keypad in-
formation elements must be programmed with the re-
quired character string. This is achieved using the function
"26=DTMF/keypad number?" (➔ page 42).
Prerequisite: a line has been seized, a connection set up,
or an existing connection has not yet been cleared
down.
Tone (0.6 seconds) followed tone (0.2 seconds)
at 0.2-second intervals
Pause (4 seconds)
etc.
Press the programmed feature key "DTMF signals: off".
o
Enter keypad information elements. The digits entered
are shown on the display.
DTMF signals: off
Press the programmed feature key DTMF/keypad
number.
DTMF/keypad number