
Google SIP Link with GTT SIP Trunking
Use Google desktop features and integrate GTT voice communications with Google SIP Link
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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
What is Google SIP Link?
Organizations can now unify their enterprise voice strategy by integrating GTT’s SIP Trunking services with Google SIP Link. This integration enables the use of Google Voice desktop features—such as voicemail transcription, ring groups and intelligent call forwarding—while maintaining GTT as the primary voice carrier and telephony routing provider.
The solution is delivered through certified SIP trunk groups provisioned by GTT, ensuring secure, direct connectivity to Google’s infrastructure. This architecture supports rapid deployment via pre-built, resilient connections to Google Global Access, offering a fully redundant and globally scalable voice solution.
The benefits of Operator Connect with GTT SIP Trunking

Global access and network integration
- GTT SIP trunking provides global DID and termination capabilities complementing Google SIP Link cloud phone features
- Direct, secure connections to Google providing resilient connections
- Voice traffic to Google Sip Link will route through GTT’s Tier 1 direct IP peering to Google. This will ensure optimal/minimum latency between GTT and Google Sip Link

Deployment and migration
- SIP trunking delivered on pre-built secure connections to Google
- GTT has porting expertise and experience to support quick and problem free number migrations to GTT SIP Trunking with Google SIP Link

Architecture and Security
- Fully Redundant to Google
- No customer Session Border Controller (SBC) required to connect to Google SIP Link Connectivity supported by GTT, thereby saving customers cost and time
Why Google SIP Link?
- Make calling business contacts and customers across the globe convenient and secure. Inbound and outbound global calling enables your business to thrive. Google SIP Link with GTT SIP Trunking centralizes your end user desktop needs and global voice capabilities.
- In addition to Google’s desktop features, GTT offers a full suite of international services, including DIDs, toll-free, termination and emergency services, providing expansive reach on a global basis as part of SIP Trunking.
- Our global, fully redundant and robust SIP-based network has been specifically designed to meet the demands of your bandwidth-intensive communication services. With a network of virtual phone lines, you can extend your global reach without sacrificing functionality or price.
- Google SIP Link with GTT SIP Trunking is capex-efficient and easily integrated with our larger portfolio including Managed SD-WAN, MPLS and our Internet services, eliminating the need for public switched telephone network (PSTN) gateways and ISDN BRIs or PRIs.
- The service also reduces local and long-distance costs, with site-to-site calling included at no charge. Managing outbound calling is simple, as calls are charged from a single, shared rate card for all sites.
- Mix-and-match telephone numbers across multiple telephone systems, including Google SIP Link, Microsoft Teams, Cisco Webex, Zoom, other PBXs and contact centers. GTT has the capability to simplify telephony migrations where there are multiple sites across multiple continents, with different types of existing phone systems and PBXs.

Discover more in our Voice portfolio
SIP Trunking
Integrate diverse communication capabilities onto a single global platform. Connect your existing PBX infrastructure to our global IP network to reduce hardware dependencies and lower your total cost of ownership.
Cloud Phone Direct
Global, scalable and high-performing enterprise voice services
Virtual Voice Network
Easily expand your global voice footprint without making large upfront infrastructure investments
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.
Zoom Phone
With Zoom’s BYOC feature, you can use GTT SIP Trunking together with the Zoom Phone cloud. You can enjoy all of the benefits and features of Zoom Phone while benefiting from our global voice solution for outbound calling, as well as new and ported DIDs.
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.
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.
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.
