Dan Teichman

Dan is a telecommunications industry veteran who joined Sonus earlier this year and has product and solutions marketing responsibilities for Sonus’ signaling, policy, and SDN products. Prior to Sonus, Dan worked for Empirix, a market leader for testing, monitoring, and analytics solutions, where he held multiple management positions for product marketing, product management, sales engineering and professional services. Prior to Empirix, Dan was responsible for product marketing and business development at Integral Access, an MPLS-based access network start-up. Dan earned a BS from Union College and a Masters of International Management from the University of Denver.
Senior Product Marketing Manager, Sonus

The Advantages of Using a Vendor-specific Virtual Network Functions Manager

As defined by ETSI, the Virtual Network Functions Manager (VNFM) is responsible for the lifecycle management of VNFs under the control of the NFV Orchestrator. VNFM operations include instantiation, scaling, updating, upgrading, or termination of Virtual Network Functions (VNFs).

Demystifying Voice Quality When Using Graphical Processing Units for Transcoding

I believe Graphical Processing Units (GPUs) are the right solution for voice transcoding as VoIP services continue their migration to virtual, cloud-based solutions. However, an argument I have recently heard is that codec transcoding is more efficient and produces better voice quality with fixed point processing, whereas GPUs are designed for floating point calculations.

If this argument was true, it directly implies that using GPUs will result in inferior voice quality. Fortunately, this argument can be shown to be false by looking at actual test results.

Ensuring Performance for Real-time Media Packet Processing in OpenStack – Part 2

As I pointed out in my last blog, there are two aspects to address in order to deliver high performance real-time media packet processing in a virtual, Cloud deployment. This blog will address the 2nd aspect - ensuring deterministic behavior of real-time media traffic with no packet loss.

Ensuring Performance for Real-time Media Packet Processing in OpenStack – Part 1

It’s been a while since I last posted, but now I am back to talk some more about Sonus innovation for real-time communications (RTC) in the Cloud. This time I want to talk about a subject our customers tell us is very important to the success of their network evolution - the ability to ensure high performance for real-time media packet processing in a virtual, Cloud deployment.

Integrated Analytics - Enabling Virtual SBCs in the Cloud

I am back again, with another topic in my continuing series about the key attributes required for successful deployment of virtual, cloud-based SBCs. This time I am going to talk about integrated analytics and the importance of automating management in a virtual, cloud deployment.

High Availability – Ensuring Reliability of Virtual SBCs in the Cloud

In my continuing series about the key attributes required for successful deployment of virtual, cloud-based SBCs, I want to spend some time talking about high availability and the importance of ensuring reliability in a virtual, cloud deployment.

What Does Network Functions Virtualization Mean for Online Service Delivery?

Customers are seeking the advantages of cloud-based services for all areas of business functions including real-time voice, video, and unified communications. Service providers are having to meet these needs by evolving the way they deliver their services. In short, they’re migrating their own networks to more virtual formats to meet the rising demand of their customers.

Load Balancing – Innovative Solutions for Virtualized SBCs

My last blog post addressed the importance of automated registration and automated configuration to achieve true elasticity when scaling a virtual, cloud-based SBC. Now I want to turn to another key attribute required for successful deployment of virtual, cloud-based SBCs – load balancing.

Adoption of Microservices – Insights and Lessons Learned Along the Way

It has been a while since my colleague Justin Hart last posted about microservices, so I decided to revisit the topic, discuss some additional aspects of microservices architecture and highlight various insights we’ve gained on our journey toward the adoption of microservices for a virtual, cloud-based Session Border Controller (SBC).

Two Critical Features Service Providers Need to Unleash Real-Time Communication Services in the Cloud

What’s holding service providers back from making a more complete migration of real-time communication services to the Cloud? Is it concerns about how to deploy and manage these services in the Cloud? Fear of the unknown? Or how about simply a slow start on the eventual migration path? It could be a combination of the above or a number of other legitimate reasons. However, as we look at our customer’s POCs, field trials and live networks, it shouldn’t be because it’s too difficult to dynamically deploy and manage a virtual Session Border Controllers (SBC).


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  • 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 exceptional 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.