The world’s seven was experiencing problems in different branches of a company’s internal communications within the country, and it was costly.
A company should make FREE international calls if their own branch. Therefore, IP telephony systems, providing communication over the Internet rather than regular phone infrastructure should be used. This company has established an IP PBX in each branch and other companies connected with the IP Power Plants. Each user was given a short code numbers in a specific order. Thus, users, users that want anywhere in the world connected to the IP telephony network within the company is able FREE call.