SIP trunking is a wireless phone service using a virtual phone line (VolP). GlobalPhone uses VolP with SIP trunking to provide service to West Falls Church VA using equipment by Asterisk, Trixbox and Fonality, leaders in the industry. This services provides substantial cost savings to the West Falls Church VA community while providing local, long distance and international calling, free calling between on-net offices and virtual workers, combined data and voice circuits, and more. This system also eliminates the need for your business to keep a reserved circuit room and bulky equipment that is difficult to maintain and move as you expand.