GTT Communications SIP Trunking

Unifying communications

One connection to global communication

GTT Communications SIP Trunking service drives productivity and efficiency by integrating diverse communication capabilities onto a single global platform for businesses. We are positioned as the future of voice communication, providing a rich feature-set of cloud telephony with inbound and outbound calling to the PSTN over an SIP. We provide a global, geographically flexible, and easy-to-use calling solution with a high-quality voice-over IP connection. We also offer seamless integration, a highly cost-effective service with a single rate card, and carrier-class support and reliability.

Top Features

  • Cost effective

    GTT pricing was designed with global enterprises in mind. We offer free office-to-office calls and a single global cost model.

  • Reliable SIP service

    Our business communication SIP trunking ensures high-quality calls are possible at all times. Run your VoIP services over SIP trunks for reliable and secure calling.

  • Easy integration

    SIP trunking services easily integrate with any mix of legacy telephony equipment for expanded telecom capabilities. GTT trunks between the internet and PTSN for optimal business communications.

  • Grow your reach

    Inbound and outbound global calling enables your business to thrive. With SIP trunking and centralized global provisioning, internet connectivity and outages will not affect call quality.