Method for processing outgoing call in voice over internet protocol (VIP) gateway

摘要

A method for processing an outgoing call in a VIP gateway system includes the steps of setting a port of an ITM card of a VIP gateway when an outgoing telephone number is inputted, recognizing an area code of the inputted number as an access code of an ITM card of a VIP gateway of the called party, adding a trunk access code matching the ITM access code to the telephone number to obtain an augmented number, and transferring the augmented number to the ITM card of the VIP gateway of the called party.