*What is my Area code?
+49 211 123456
49 = country code
211 = area code for DÜsseldorf
123456 = the phone number you would like to call
The area code is the code for your current location.
*You can enable this feature by opening the options screen in your client:
Tools > Options
Go to the call settings tab
Enter you local area code:
ADVANTAGE FOR YOU:
After you have done this, you will only have to insert the fixed phone number you would like to call: 123456 in this case.