
AVST delivers the industry's most interoperable UC platform bringing best-of-breed UC-Voice, UC- Mobile and UC- Business Process solutions to the enterprise. Unlike virtually every other UC vendor, AVST does not constrain customers with a single vendor lock-in approach. In fact, it's the very opposite. By connecting new and existing technologies, AVST frees organizations from the constraints of a closed, single vendor lock-in approach, unlocking the full potential of their communications infrastructure. With over 15 million users worldwide and three decades of innovation excellence, AVST is unifying communications®.
AVST offers the most powerful enterprise-class Voicemail, Automated Attendant and Fax solutions on the market. With three decades of continuous development, AVST's solutions enable the migration of first generation messaging systems to next generation UC deployments. Discover how AVST is the bridge that connects your past to your future.
First, flexible, forward-thinking – thats AVST. For 20 years, AVST has designed the most feature-rich Unified Messaging solution on the market. Don't just take our word for it. Leading industry analysts have consistently rated AVST's Unified Messaging solution, as best-of-breed in the marketplace. In addition, AVST is enabling business mobility with powerful mobile tools that include Personal Assistant, a hands-free Speech interface, Mobile Number Protection and more.
Accelerate information flow with AVST. Improve business efficiency by enabling faster response times, speed up processes and reduce human latency. Stay ahead of the game with real-time Notification alerts, automatic Information Access, Click-to-Call, and even extend communications to your Web Portal.
At AVST, we understand that Unified Communications isn’t a single product; it’s about integrating a set of different communications solutions together. AVST delivers the industry’s most advanced and extensive UC interoperability, connecting all major PBX systems, e-mail systems, presence engines and business applications together.

![]() |
||
CallXpressCallXpress is the industry’s most interoperable Unified Communications platform that brings best-of-breed voice, mobile and business process applications to the enterprise. The elastic and open nature of the platform enables organizations to leverage and extend the value of existing IT communications infrastructures while maximizing business, workgroup and personal productivity. |
CallXpress ServerPowerful and Reliable Servers for Your CallXpress ApplicationsWhether you're a small business poised to grow or a large corporation with a global presence, you're sure to find the perfect fit for your communications needs among AVST's portfolio of high performance, highly reliable CallXpress servers. CallXpress Server Resources: |
XpressCareSoftware Protection for Your AVST SolutionsXpressCare provides full software protection for your AVST product in one easy-to-buy plan. XpressCare helps to maximize the benefits of your system through continuous software improvements and proactive service. This ensures optimal software performance, continued stability, and on-going compatibility, which equates to increased customer satisfaction and smooth operations. XpressCare Resources: |
ReparteeFor a Linux-based Messaging Solution, Rely on ReparteeRepartee® is an easy-to-deploy messaging system designed for small to mid-size businesses to cost effectively manage their voice communications, improve customer service and increase productivity. Built on a proven Linux platform, Repartee delivers feature-rich applications including hospitality, call processing, personal call control, voicemail, automated attendant, unified messaging, and fax. Repartee delivers the right solution that best fits your SMB needs.
Repartee Resources: |
XpressCareSoftware Protection for Your AVST SolutionsXpressCare provides full software protection for your AVST product in one easy-to-buy plan. XpressCare helps to maximize the benefits of your system through continuous software improvements and proactive service. This ensures optimal software performance, continued stability, and on-going compatibility, which equates to increased customer satisfaction and smooth operations. XpressCare Resources: |

Press Releases |
AVST In the News |
Latest AVST News |
||
Featured CallXpress Customers |
|
| Over 10 Million Users Trust CallXpress from AVST. Our existing customers are big fans of AVST, because they have experienced first-hand the benefits of CallXpress. Featured CallXpress customers:
| |
|
Additional CallXpress Case Studies can be found here. |
CallXpress User GroupLooking for a way to connect with other CallXpress users? Join the CallXpress User Group and take advantage of the opportunity to network with your peers at the End User Conference, participate in online discussions on the User Forum, and learn about the latest enhancements to CallXpress by tuning into a webinar or blog.
All of this an more is available on the AVST Community website. |
EventsAVST participates in many of the leading industry events, online webinars and activities in the enterprise communications arena. Review the list of our upcoming activities to find an event where you can meet face-to-face with AVST representatives. It will be time well spent. Archived Online Webinars: Upcoming AVST Live Online Webinars can be found here. |