SIP Trunking
Integrating diverse communication capabilities onto a single global platform.
Voice
Your Tier 1 Telephony Partner
Whether you’re migrating to cloud-based telephony or connecting your voice infrastructure over SIP, we have you covered. Our Voice services help you take advantage of the advanced functionality and cost efficiencies these solutions bring – all backed by the global reach of the GTT Tier 1, IP backbone that supports our SIP-based voice network.
Voice Portfolio
Whether you’re migrating to cloud-based telephony or connecting your voice infrastructure over SIP, we have you covered. Our Voice services help you take advantage of the advanced functionality and cost efficiencies these solutions bring – all backed by the global reach of the GTT Tier 1, IP backbone that supports our SIP-based voice network.
The Benefits of GTT Voice
EXPANSIVE & SCALABLE NETWORK
Whether you’re migrating to cloud-based telephony or connecting your voice infrastructure over SIP, we have you covered. Our Voice services help you take advantage of the advanced functionality and cost efficiencies these solutions bring – all backed by the global reach of the GTT Tier 1, IP backbone that supports our SIP-based voice network.
GLOBAL TELEPHONY FOOTPRINT
We offer one of the largest global footprints for DIDs, termination & toll-free services. We also provide emergency services in many countries.
DIVERSE TECHNOLOGIES & PLATFORMS
SIP-based interoperability with UC platforms (Microsoft, Avaya, Cisco, ShoreTel & Siemens). Flexible access options, include public IP & private network.
Why GTT Voice?
- Diverse global communications services integrated onto one connection.
- Interoperable with key UC platforms and legacy infrastructure. Supports direct routing to Microsoft Teams, Cisco Webex Calling & Zoom Phone.
- Global SIP-based voice network, which includes industry-leading Session Border Controllers for easy scalability.
- Comprehensive telephony footprint with DIDs in 55+ countries and toll free in 120+ countries.
- Low latency global outbound calling using our IP backbone to deliver locally terminated calls.
- Free office-to-office calls.
Related Services
SIP Trunking
Integrating diverse communication capabilities onto a single global platform.
Operator Connect pour Microsoft Teams
Trusted partner of Microsoft withglobal voice services from GTT
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Cloud Phone Direct
GTT Cloud Phone Direct is GTT’s SIP trunking offering that supports direct routing to Microsoft Teams, Cisco Webex Calling, and Zoom Phone for your voice needs.
Our Gartner Rating
4.2
62 Reviews
88%
as of the last 12 months
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