Abstract: When people dial a wrong international telephone number from a regular phone or a mobile phone, the telephone switches intercept the call and the let the caller know that the number they have dialed is incorrect and they should try again. Generally the caller dials the same telephone number and receives the same message. The present invention analyses the dialed telephone number and based on a knowledge base, plays an intelligent message to the caller and instructs the caller what to dial, and what the different parts of the telephone number mean. The caller has a much better idea of dialing international telephone numbers, after listening to the invention's intelligent messages.