Traditional phone networks use copper wires to communicate with your in-house PBX. With SIP trunking, there is no need for traditional copper lines from the incumbent telco. SIP trunking uses Voice over Internet Protocol (VoIP) to create a virtual phone line or “trunk” to send voice traffic to your phone system. This allows you to reduce telecom expenses and gives you a much more flexible and expandable means of communicating. SIP simply means Session Initiated Protocol which is more internet jargon.
GlobalPhone supports native SIP trunking with SIP capable equipment like Asterisk, Trixbox and Fonality. In addition, connectivity to older legacy PBX systems is provided through standard VoIP Gateway Devices. Click to see Supported PBX Systems and Supported Gateways.