How the Emergence of SD-WAN Will Impact VoIP Performance


In the ever-changing world of networking tech, the rise of Software-Defined Wide Area Networking (SD-WAN) is a total game-changer. As businesses rely more on Voice over Internet Protocol (VoIP) for communication, understanding how SD-WAN affects VoIP performance is crucial. In this piece, we dive into the ins and outs of SD-WAN, its influence on VoIP, and ways to boost VoIP performance within SD-WAN setups.

Lauren Davies of bOnline comments: “VoIP is growing in its importance and never before has it been more important to understand what VoIP is, what makes it better and who can benefit from it.”

What Is SD-WAN?


As it’s a fairly new concept, it’s vital to fully understand exactly what SD-WAN is before diving into how it impacts VoIP performance. Traditional Wide Area Networks (WANs) often fall short in meeting modern business needs.

Old-school WAN setups, with their focus on hardware and rigid configurations, just can’t keep up with today’s dynamic networking demands. SD-WAN changes the game by separating control from hardware, using software-defined networking principles to manage and coordinate networks.

By putting network functions into software, SD-WAN lets organisations route traffic across multiple WAN connections—think broadband internet, MPLS, and LTE, based on real-time performance metrics and app priorities.


How Does SD-WAN Impact VoIP Performance?


Voice over Internet Protocol (VoIP) is the go-to for business communication these days, offering a budget-friendly alternative to traditional phone systems. But VoIP’s sensitivity to network latency, jitter, and packet loss can be a headache in traditional WAN environments.

SD-WAN brings a bunch of features that seriously impact VoIP performance:

Smart Path Selection

Unlike traditional WANs with their static routing, SD-WAN picks the best paths for VoIP traffic, dodging congestion and link failures as they happen.

Quality of Service (QoS) Prioritisation

With SD-WAN, you can set QoS rules that put VoIP traffic first, making sure voice quality stays consistent even when other apps are vying for bandwidth.

Dealing with Packet Loss

SD-WAN uses tricks like Forward Error Correction (FEC) to handle packet loss in VoIP calls, making the whole experience more reliable.

Seeing and Controlling Apps

SD-WAN gives you a clear view of your app traffic, letting you route VoIP calls smartly to cut down on latency and jitter.


How To Boost VoIP Performance in SD-WAN


To get VoIP humming in SD-WAN environments, you need a smart approach:

Keep an Eye on Performance

Set up monitoring tools to keep tabs on network metrics in real-time. Use what you learn to tweak your SD-WAN setup for the best VoIP performance.

Smart Routing Choices

Use SD-WAN’s routing smarts to give VoIP traffic top priority and pick the fastest paths based on how the network’s doing. Keep an eye on traffic patterns and tweak routing rules to keep VoIP calls flowing smoothly.

Set Your QoS Right

Create and enforce QoS rules that make sure VoIP calls get the bandwidth they need, even when other apps are clamouring for it. Fine-tune your QoS settings based on what your VoIP setup needs.

Plan for the Worst

Build redundancy into your WAN connections and set up failover mechanisms to keep VoIP calls going even if links drop out. Set up SD-WAN to automatically reroute traffic when links go down, so your VoIP stays up.

Get Your Systems Talking

Make sure your SD-WAN and VoIP systems play nicely together. Work with VoIP vendors to make sure your SD-WAN setup plays nice with your phone system and other communication tools.


What To Consider When Implementing SD-WAN


In addition to the strategies mentioned above, organisations should consider several other factors when implementing SD-WAN for VoIP:

Security Measures

Implement robust security protocols to protect VoIP traffic from potential threats and vulnerabilities in the SD-WAN environment. Employ encryption and authentication mechanisms to ensure the confidentiality and integrity of voice communications.

Bandwidth Management

Monitor and manage bandwidth usage across the SD-WAN infrastructure to prevent congestion and ensure optimal performance for VoIP traffic. Implement bandwidth shaping and traffic prioritisation techniques to allocate resources effectively.

Scalability and Flexibility

Choose an SD-WAN solution that offers scalability and flexibility to accommodate growing VoIP traffic demands and evolving business requirements. Ensure that the SD-WAN architecture can scale seamlessly to support increased bandwidth and new locations.

User Training and Support

Provide comprehensive training and support to users to ensure they understand how to optimise VoIP performance within the SD-WAN environment. Educate users on best practices for VoIP usage and troubleshooting common issues.

In a nutshell, SD-WAN is shaking up how we think about networks, offering flexibility and agility like never before. By embracing SD-WAN and using it smartly, you can give your VoIP setup a serious boost, making communication a breeze in the digital age.

With careful planning and strategic implementation, organisations can optimise VoIP performance within SD-WAN environments and unlock the full potential of modern communication technologies.