When you receive an incoming call to your phone number, your other telephones (cell, home phone, car phone) will ring as well and the first one answered will be connected to the caller. Basically the call will be routed to all phone sets, which you will list in simultaneous ring option.
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.