“Extension” - is the extension of the telephone line (PBX) or the Centrex system. It works as an association and allows calling to certain telephone sets without the necessity of dialing the telephone number, but only by dialing a short combination of digits, reaching the desired subscriber.
World Venture Group Telecom is a VoIP system integration leader in this environment. It deploys turn key projects for service providers as well as for multinational enterprises located in Latin America, USA and Europe.