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Step by step
j
Wait for the dial tone and enter the code for example,
*
97 for Do not disturb on. If necessary, make further
entries; refer also to the user guide for dial pulse/DTMF
phones.
or
j Dial the external number.
Using functions in ISDN via code
dialing (keypad dialing)
If authorized (contact your service personnel), you can
access ISDN functions in some regions using codes.
N Press the key shown.
Confirm the option shown.
j Enter the required trunk number (contact your service
personnel).
j Entering a code for required ISDN function (contact your
service personnel).
You can only perform one function/establish one
outgoing connection at a time.
The connection is cleared as soon as the function
is successfully activated.
In the case of an external call, the connection is
cleared as soon as one of the call partners hangs
up.
*503=Keypad dialing?
Contact your network provider to find out which
ISDN functions can be code-operated in your
country.
Siemens Enterprise Communications
GmbH & Co. KG shall not be liable for damages/
costs which may be incurred by fraudulent activi-
ties or remote operation (such as toll fraud).