SD-WAN Explained

What is SD-WAN : Software Defined Wide Area Network and VoIP

Network administrators suggest SD-WAN.What is SD-WAN? Explained.

Software-Defined WAN (Wide Area Network), SD-WAN for short, is software based management that tries to eliminate the complexity of packet routing by an understanding of applications, their performance and the policies placed. Typically an edge device or VM using software-defined networking (SDN) technology, it is used to prioritize bandwidth allocation and use dynamic path selection for critical applications, like voice, video or CRM applications. These priorities are set according to policies and rules. SD-WAN allows network administrators to create virtual networks at the enterprise level improving network demands using automation. Connecting dozens of remote offices together using broadband options can lower costs over a total MPLS network, a much more expensive option.
SD-WAN offers a solution for companies to use broadband connections for a majority of their networking tasks while reserving their MPLS connections for the most critical data. The complexity of hybrid systems that use router packet prioritization creates the need for time consuming updates as network traffic changes. SD-WAN addresses these complexities by using software-defined networking (SDN) technology which provides many benefits.

SD-WAN- Effective Network Management & Cost Savings

SD-WAN technology offers companies an effective way to solve network congestion by using lower cost broadband rather than than expensive MPLS. By monitoring the network, including broadband connections, it can identify how well specific applications can be handled, including voice or video traffic. If services become problematic from jitter, latency or limited bandwidth, traffic can be rerouted in order to meet QoS for certain applications. SD-WAN offers flexibility and much easier management than packet prioritization.

Cloud-based services and apps are changing how businesses of all sizes work and share information.

Why companies are moving to the cloud for phone service and apps:
  • Mobility- Access to applications from anywhere on multiple devices.
  • Cost Effective- Easy to setup, easy to manage, easy to scale.
  • Save on Infrastructure- Employees can connect from home using their own devices, lowering company costs in office space, desks, etc.
  • Up to Date Software- Cloud providers take on the task of updates and security patches.

VoIP Business Phone Services and SD-WAN

Most small businesses use some sort of cloud services, such as accounting software, payment acceptance, email marketing, or web hosting. The big decision comes when they decide to move their phone system. However, after a successful move to hosted VoIP and the realization of the efficiencies that accrue from mobility and its advanced features, other cloud services usually follow. The choices of Software as a Service (SaaS), such as CRM (Customer Relationship Management) apps, backup apps, storage space are large and readily available at reasonable costs. The problem is that all this new data is moving through the customer's Internet connection and starts to constrict the phone service. The more cloud apps used, the worse it gets. Issues with choppy or degraded voice and video conferencing can occur. Slow applications ends up causing lost customers, lost revenue, and lost opportunities. The fix is SD-WAN which manages these critical application to ensure good performance. SD-WAN benefits include:

  • Cost Savings- There is no need to buy more bandwidth.
  • Control- Shows every app on your network and the bandwidth they use.
  • Intuitive Management- Easy to control and set priorities on specific applications for optimization.


Move your business phone system to the cloud: Get a free quote for business VoIP.

Additional related articles:

Explanations of Business Phone Service  On Premise PBX Benefits