VUI offers smart SIP Trunking services to every big and small business entity in US and across the globe. Our SIP Trunking gives the advantage to the businesses to efficiently use IP-PBXs not only for internal communication, but also for global communication. At VUI our cost effective SIP Trunking services eliminate the need for local PSTN gateways, costly ISDN BRIs (Basic Rate Interfaces) or PRIs (Primary Rate Interfaces).

VUI’s SIP Trunking facility works well with IP PBX. The facility also works efficiently with the legacy customer premise equipment that uses Integrated Access Device or the gateway. The SIP Trunking facility from VUI provides inexpensive local, toll-free, domestic and international long distance communication to the enterprises.