Enterprise Voice

Redefine How Your Enterprise Communicates

Comprehensive Global Footprint

Whether you are migrating to a cloud-based telephony system or connecting your voice infrastructure over SIP, GTT has you covered. Our Enterprise Voice services help you take advantage of the advanced functionality and cost efficiencies these solutions bring, backed by the global reach of the GTT Tier 1, IP backbone that supports our SIP-based voice network.

The GTT Difference

Expansive, Highly Scalable Network

Expansive, Highly Scalable Network

GTT’s global voice network includes redundant points of presence per region worldwide, where we interconnect with leading regional and global carriers.

Comprehensive Global Telephony Footprint

Comprehensive Global Telephony Footprint

We offer one of the broadest footprints for DDIs, termination services and toll-free services around the world, helping you to easily expand your reach. We also offer emergency services in select countries around the world, as well as in-country voice testing in over 100 countries and territories.

Support for Diverse Technologies and Platforms

Support for Diverse Technologies and Platforms

Our robust SIP-based network is interoperable with major UC platforms, including Microsoft, Avaya, Cisco, ShoreTel and Siemens. We also provide flexible access options for your service, including public IP and private network access technologies such as GTT SD-WAN.

Learn more about how GTT can help support your business collaboration, mobility and growth.

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Sales Enquiries:
UK: +44 207 029 4800 BE: +32 2/588 5333 NL: +31 20 4546700 SE: +46 8 459 94 00 APAC: +852 8107 1088
GTT NOC:
Toll Free: +44 203 002 1633 Toll Free: +353 1800 944 992 Non Toll Free: +44 203 005 0711
General Enquiries:
For general enquiries please use the form on our Contact Us page
GTT NOC:
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