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Flexible & Interoperable SIP Trunking offering is interoperable with all major UC platforms and can be seamlessly integrated with legacy equipment. Thanks to GTT’s direct peering with Microsoft, we can deliver dedicated SIP trunks to a client’s Microsoft Teams service. Clients will benefit from the lowest latency connectivity between GTT’s voice network and Microsoft Office 365. Comprehensive Global Footprint GTT offers a full suite of international services, including DIDs, toll-free, termination, and emergency services, providing expansive reach on a global basis. A global, fully redundant, and robust SIP-based network has been specifically designed to meet the demands of bandwidth-intensive communication services.