GTT’s SIP Trunking goes beyond voice transport, transforming how enterprises do business. From voice to video to instant messaging, we help you drive productivity and efficiency organizationwide through seamless integration of diverse communication capabilities.
Our SIP Trunking offering is interoperable with all major UC platforms, including Skype for Business, Avaya, Cisco, Siemens and ShoreTel, and can be seamlessly integrated with legacy equipment. We also provide a secure SIP Trunking service option that guarantees encryption of sensitive call signalling and media with TLS and SRTP.
GTT offers a full suite of international services, including DDIs, toll-free, termination and emergency services, providing expansive reach on a global basis. Our global, fully redundant and robust SIP-based network has been specifically designed to meet the demands of bandwidth-intensive communication services.
SIP Trunking is capex-efficient, eliminating the need for public switched telephone network (PSTN) gateways and ISDN BRIs or PRIs. The service also reduces local and long-distance costs as site-to-site calling is included at no charge. Furthermore, SIP Trunking provides bundled options to include per-minute usage in the monthly service charge.
Termination — 200+ countries and territories
DDIs — 65+ countries
Toll free — 120+ countries and territories
Emergency services — select countries outside the U.S.
Work anywhere with cloud-based voice services and enterprise calling featuresLearn More
High-performance, secure connectivity for your global enterprise, backed by end-to-end SLAsLearn More
Transform your WAN with dynamic network traffic managementLearn More
Comprehensive offering including network monitoring and CPE full life-cycle managementLearn More