Telecommunication companies used to deploy Voice over IP (VOIP) service to serve their own subscribers while they want to make an international call instead of using International Direct Dial (IDD) service from their competitor. It is different with IDD service, VOIP service required subscriber to dial using certainty prefix number created by its telecommunication company while they want make an international call. Meanwhile on the IDD service, telecommunication companies should have a IDD license given by telecommunication regulatory
Voice over IP (VOIP) can be done by using Continue reading Voice over IP (VOIP) service