
Zoom Phone with GTT SIP Trunking
Trusted BYOC and provider exchange partner
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Demystifying the Migration to SIP Trunking
Read post: Demystifying the Migration to SIP Trunking
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Beyond SIP Trunking: Building a Future-Ready Communication Infrastructure
Read white paper: Beyond SIP Trunking: Building a Future-Ready Communication Infrastructure
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Setec Case Study
Read guide: Setec Case Study

Consolidate your communications over a single platform
Voice, video, chat and collaboration
GTT partners with Zoom and supports both Zoom Phone Bring Your Own Carrier (BYOC) and Zoom Phone Provide Exchange to offer the next level of phone number self-service.
Customers using Zoom Phone can easily connect to GTT’s SIP Trunking with Zoom BYOC or Provider Exchange and obtain global telephone numbers and outbound calling capabilities to meet their calling needs.
Our robust global voice solution supports telephone numbers, local and international outbound calling, emergency service calling and number porting.
Global and fully resilient Voice services
Zoom Phone with GTT SIP Trunking provides a global, geographically flexible and easy-to-use calling solution with a high-quality voice over IP connection that allows your business to stay productive and connected.
Easy migration
Zoom Phone with GTT SIP Trunking helps you drive productivity and efficiency by integrating diverse communication capabilities and global voice capabilities onto a single global platform. Simplify your infrastructure and remove the need for on-premises phone solutions with GTT SIP Trunking.

The benefits of Zoom Phone with GTT SIP Trunking
High-performing network and peering
- Your solution delivered end-to-end on GTT’s secure global Tier 1 IP backbone
- Direct integration to Zoom Phone on highly secure encrypted connections
- Scalable, fully redundant and robust SIP-based network designed to meet the demands of bandwidth-intensive communication services
- Geographically redundant connections to Zoom Phone for always-on service

Seamless migration and deployment
- Existing customers can keep their calling plans
- A parallel build of legacy GTT SIP Trunking service can be supported during migration
- Easy set up and activation with GTT superior provisioning team
- Eliminates the need to host any hardware on-premises or in a data center
Superior support and reliability
- Secure and reliable network managed by GTT’s Network Operations Centers across the world
- Carrier-class support and reliability – 24/7/365 technical support to deliver a high-quality service
- Expert GTT engineers supporting SIP Trunk solution
Transparent pricing
- Telephone numbers charged monthly with no per-minute collection charges
- A simple per channel/CCS monthly charge to support the capacity of bi-directional calls
- Simple rating structure with a usage-based calling model makes it easy to manage costs
Why Zoom Phone with GTT SIP Trunking?
Enjoy all of the features of Zoom Phone while benefiting from GTT’s global voice solution.
- Ensure a better-quality experience for your business operations and customer meetings with Zoom Phone’s provider exchange capabilities backed by GTT’s purpose-built, fully redundant, global and robust SIP based network.
- Engage with an experienced managed service provider such as GTT to ensure a simplified migration path from an on-prem PBX to a cloud solution for your organization, allowing you to stay productive, efficient and connected.
- Full coverage international and national capabilities
Discover more in our Cloud Phone Direct portfolio
Microsoft Teams
We can deliver dedicated SIP trunks to Microsoft Teams services residing in Office 365. As a Tier 1 ISP, GTT peers directly with Microsoft, ensuring the lowest latency connectivity between our voice network and Microsoft Office 365.
AnywhereNow
Easily incorporate GTT Voice with AnywhereNow cloud-based contact center, natively integrated with Microsoft Teams. You can activate a GTT SIP Trunk group to Microsoft Teams Direct routing and AnywhereNow.
Cisco Webex Calling
Our SIP Trunking service can provide Cloud Connected PSTN (CCP) capabilities for Cisco Webex Calling clients. You can make inbound and outbound telephone calls using telephone numbers assigned by or ported to GTT.
Complete your solution
Managed SD-WAN
Transform your WAN with dynamic network traffic management for flexibility, speed, security and cost control.
Dedicated Internet Access
High-quality internet connectivity for enterprises, delivered on our leading Tier-1 IP network.
MPLS
High-performance, secure connectivity for your global enterprise, backed by end-to-end SLAs.
Managed Detection & Response
Monitor, validate and respond to security threats faster than ever. We leverage a best-in-class SIEM platform augmented with machine learning and automation to detect sophisticated threats in cloud environments.
Our Gartner rating
Global WAN Services
74%
Recommended
As of
Simplify your global communications
Stop overpaying for fragmented and outdated voice networks. Consolidate your communications on a global IP backbone built for performance and scale.
