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Voice overview choices

Set your enterprise up with a quick and easy telephone service

Achieve collaboration without limits with our range of enterprise phone options that meet your unique requirements. Pick a single enterprise line or upgrade to a rotary or trunk line for scalability and enhanced communication features, which enable you to set up multiple connections.

Empower your teams without limits

We understand you need cost effective solutions to ensure you stay connected to your teams. With our Integrated Services Digital Network (ISDN) solution you have the flexibility to scale your business connections as your enterprise grows.

Simple and scalable business communications with VoIP solutions

We understand that your enterprise requires a reliable, integrated, and scalable communication solution to connect your teams, partners, and customers. Whether you are a growing enterprise requiring a flexible voice solution without the need for day-to-day management, or large organization with multiple business locations on and off the island looking to converge your voice and data networks, we have a service that meets your needs.

Deliver an improved customer experience with Hosted PBX

Gain ease of management with Hosted PBX, and eliminate the need to maintain your communication systems. At GTA, we offer you the PBX functionality and routing intelligence you need, residing on the GTA network.

With Hosted PBX, you can enjoy the following key benefits:

  • Upgrade to the latest communications technology easily, with all updates handled by GTA.

  • Scale your communication lines seamlessly within minutes, without phone system constraints or hardware upgrades.

  • Gain access to an array of innovative features and capabilities to enable your business to improve employee productivity while delivering better customer service.

  • Ease of management without the need to maintain hardware or technology on premises. All operations and maintenance of your Hosted PBX system will be performed by GTA.

  • Route calls to any phone, including phones not wired to your Hosted PBX.

A single-source phone systems solution for all your enterprise needs

Gain cost-savings, ease of management, and convenience when you choose GTA as the single vendor for all your business communication needs. Whatever phone system solution and equipment your enterprise requires, we have a service for you. By eliminating multiple vendors, your business can also enjoy a personalized, reliable service.

Why GTA for enterprise?

A network you can trust

Get connected to your customers and prospects faster, seamlessly and securely, with our fully buried, fully owned fiber and copper network.

Work the way you want

We want you to work and collaborate without limits anytime and anywhere, with the connectivity you need to power your enterprise productivity.


We have invested over $70 million in our networks over the past four years—with no plans to stop—to consistently deliver a world-class experience to the enterprises of Guam.

Tailored to your ambition and scale

Whatever your ambition and scale, and however you need to connect with your customers and prospects, GTA provides a full range of services specifically tailored to the needs of your island-based enterprise.

Let's get your enterprise connected

Your GTA support

For assistance or to book an appointment in our stores, please contact us. We’re happy to assist you.

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