Microsoft Exchange Online Unified Messaging

Enterprise-Class Unified Messaging Alternative for
Microsoft Customers

Exchange Online Unified Messaging


Microsoft announced that as of July 2018 they will be discontinuing support for Session Border Controllers (SBC) to connect third-party PBX systems to Exchange Online Unified Messaging (UM). This news forces many Microsoft customers to seek an alternative Unified Messaging solution for Office 365 that can connect to their existing on-premise PBX.

AVST provides Microsoft customers with a secure and flexible enterprise-class Unified Messaging solution that enables them to continue using their existing PBX investments until they are ready to transition to the cloud and Skype for Business over time.

AVST delivers Unified Messaging to Office 365 while integrating with current and future PBX investments.

  • Integrates with all leading PBX/IP-PBX phone systems – Avaya, Cisco, Microsoft and more
  • Ability to continue using Exchange UM Outlook forms
  • Enables an easy migration path from existing premise-based PBX to Skype for Business, Premise or Cloud
  • Economically provides an enterprise-class Unified Messaging solution that integrates with on-premise PBXs

Contact Us

AVST is offering a significant incentive to ease the economic impact of this UM challenge for enterprises.

Call Us to learn about our Exchange Online UM promotion (866) 368-0400

The AVST Alternative to Exchange Online UM

Microsoft Gold Communications and Messaging Competencies

AVST is proud to be a member of the Microsoft Partner ecosystem, holding Gold Communications and Messaging Competencies for CX-E. These competencies distinguish AVST as being within the top 1% of the Microsoft Partner ecosystem.

AVST is pleased to offer Microsoft customers an alternative Unified Messaging solution that enables them to continue to enjoy the benefits of Exchange-based UM, regardless of their current or future PBX, with no interruption in service.

7 Steps to UM Success

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Quick Guide: Understanding Your Options

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