15. The method of claim 10 , further comprising generating the SVM transmission request at a predetermined time in order to try retransmission of the second SVM, if the SVM transmission fails.
10. The method of claim 9 , further comprising: recording and storing a second SVM in response to a user input; and requesting a normal voice call setup with a receiving terminal in response to an SVM transmission request, wherein the requesting the normal voice call setup includes: sensing generation of the SVM transmission request; and sending a call setup message including a value indicating a normal voice call setup message for SVM transmission.