VOIP services are needed by telecommunication company since many subscribers has many purposes by doing that such business activity, contacting their family etc. Telecommunication Company prefer to provide international call service with VOIP rather than International Direct Dial (IDD) service which need a license from the regulatory institution beside it gives cheaper tariff. From subscribers’ view, the different between both VOIP and IDD service is while they make a dial session. VOIP service is valid to their subscribers only and subscribers should dial with additional prefix. Meanwhile, IDD service is valid Continue reading Building a Voice Over IP (VOIP) Service