Step by Step
Program/Service
*
503=Keypad dialing?
Using functions in ISDN via code
dialing (keypad dialing)
If authorized (contact System Suppor t), you can set
ISDN functions via code dialing in some countries.
Press the key. The LED lights up.
Confirm.
or
Enter the code.
Enter the number of the trunk you wish to use (contact
System Suppor t).
Entering a code for required ISDN function.
Contact your network provider to find out which
ISDN functions can be code-controlled in your
country.
Siemens AG shall not be liable for damages/
costs which may be incurred by fraudulent activi-
ties or remote operation (e.g. toll fraud).
Using Other Functions
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