Enterprise PBX

Imagine a PBX That Allows You to Work Anywhere

Optimize communication across your organization and around the world with Enterprise PBX. Our offering allows you to eliminate legacy equipment and take advantage of the efficiency and ubiquity of voice services delivered from the cloud.

Efficient Telephony

With Enterprise PBX, you can provision voice infrastructure instantly and fully control your company’s calling environment via a single administrator portal. Your employees have access to a single contact number that they can use across offices and devices as well as a web-based portal to manage their calling preferences.


Enterprise PBX includes full enterprise calling features, such as call transfer, voicemail, music on hold, enhanced call routing and unified messaging. The service is backed by leading SLAs and the comprehensive reach of our robust global SIP-based network.

Flexible and Comprehensive

Gain additional value from your Enterprise PBX investment by adding additional voice services, such as audio conferencing, Call Center or Contact Center. Enterprise PBX is available globally, with common pricing structure for ease of management. We offer two service options: Standard and Advanced, as well as fully hosted PBX or hybrid PBX deployment models.

Robust set of enterprise calling capabilities and simple set-up allows for easy PBX replacement

One device-agnostic contact number for employees simplifies communication

Service backed by our global, Sonus Networks-based SIP network

Ability to manage global voice infrastructure from a single portal

Available as a hybrid or hosted PBX configuration

Standard and advanced service options

Available globally, with common pricing structure for ease of management

Can be bundled with additional services such as Call Center and Contact Center as well as audio conferencing


Voice and Unified Communications

Optimize collaboration across your business with our suite of cloud-based voice services.


SIP Trunking

Take your voice network to the next level and expand communication globally.


Enterprise PBX

Take advantage of full PBX functionality delivered from the cloud.



Through Enterprise PBX, Corsair reduced capex and improved customer service.

Learn more about how GTT can help your enterprise propel
collaboration, mobility and growth.