VX 900 Multi-Service Voice Switch

The Sonus VX 900 Voice Exchange is the industry's first fully integrated multi-service voice switch with Any-to-Any gateway functionality, creating a next-generation solution for enterprise VoIP enablement. The award-winning VX 900 platform provides the most powerful, most complete, Voice over Internet Protocol (VoIP) solution for the government market. The VX 900 offers an efficient, robust and cost-effective way to provide high-quality voice and secure voice services over the diverse and challenging transmission environments in fixed/mobile government and military networks.

As a multi-function voice switch, the VX 900 can be deployed in distributed networks to reduce and consolidate PBX infrastructure. The VX 900 extends advanced call system features from centralized data centers to remote locations. With its remote survivability features, the Sonus VX 900 provides continuous, local call service and intelligent trunk routing in the event of network connectivity failure.

  • Bandwidth-efficient secure voice platform
  • Robust, secure voice relay over IP
  • Purpose-built voice and data solution for government and military networks
  • Integrated signaling, gateway and media server functions
  • Dynamic flow control technology to keep secure call connected in a degraded environment
  • Supports 200 simultaneous Future Narrowband Digital Terminal (FNBDT) calls over IP


  • MathWorks estimates that through the automated provisioning and call routing features of the Sonus solution, the company has freed up more than 250 IT staff hours per week for more important projects.

    MathWorks is the leading developer of mathematical computing software for engineers and scientists. Founded in 1984, MathWorks employs 2800 people in 15 countries, with headquarters in Natick, Massachusetts, U.S.A.
  • The industry-leading performance and scale of Sonus' SBC 5100 allows us to maintain a competitive edge in the market while delivering exeptional customer service. 

    Smart Tel is a major player in the Singapore telecommunications industry and aims to develop its global presence with new offices in Australia, Thailand, Indonesia, Philippines, India, South Africa, the US and the UK, with cost effective, easy-to-use and scalable telephony solutions.
  • We wanted to work with an industry-leading SBC vendor and our market analysis indicated that Sonus was the clear choice for this partnership.

    (GCS) is a software company founded in 2006 by Neal Axelrad and Jay Meranchik. GCS' goal is to be the best company in the marketplace. We are privately held and have offices in New York & New Jersey USA.
  • Sonus made the deployment, integration and migration to Microsoft Lync easy. 

    We are experts in identifying and delivering flexible communication solutions that scale and adapt to your business demands, empowering your business to do more, faster and with less effort and cost.