What Is VoIP QoS & How It Improves Your Call Quality

Simplify your phone communication with a cost-effective, secure and reliable virtual phone solution

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Supriya Bajaj

Senior Writer:

green tickDate: October 20, 2022

Phone calls are a crucial part of any organization’s marketing strategy. In fact, 92% of all customer interactions happen over the phone, making it an indispensable business tool.

With the emergence of VoIP (Voice over Internet Protocol) technology, customers are getting access to affordable services that enhance global connectivity. However, one defining criteria for successful VoIP implementation is Quality of Service(QoS). Let’s dive deep and find out more about this vital parameter.

What Is Quality of Service (QoS)

Quality of Service (QoS) is any structured technology that prioritizes data traffic through a router to provide optimized service to end-users. It aims to minimize packet loss, latency, echo, and jitter to resolve audio quality issues and provide a better user experience.

Most cloud PBX providers include QoS in the service level agreement (SLA) to guarantee a specific level of network performance and retain clients. It is an advanced mechanism that can prevent the degradation of voice quality and provide consistent VoIP service to users.

Why Is QoS Important?

A phone call with constant audio problems is terrible for all the parties involved. It leads to communication failure, loss of precious time, and develops a negative brand image. 

Inconsistent VoIP data packets can ruin your sales demos, webinars, and live conference calls. It is necessary to receive continuous voice transmission without any other disturbances for a pleasant calling experience. Similar to other real-time applications, VoIP is also delay-sensitive. For apex call quality, the data packets required for audio transmission must not be dropped, must not get delayed, or suffer from jitter. 

Without implementing QoS, you may experience clogged VoIP networks that lead to poor voice quality. Setting up QoS will improve quality for all users connected to your Local Area Network (LAN). Here are some compelling reasons to set up VoIP QoS:

  • Provides dedicated bandwidth support
  • Leads to a significant improvement in data loss characteristics
  • Manages and eases out network congestion
  • Streamlines traffic priorities across the network

How Does QoS Work?

The QoS setting enables the router to prevent unwanted noises and increases the quality of the VoIP connections. By providing priority to the voice and voice traffic, the router helps to prevent other services from having a similar priority level, ensuring proper data flow maintenance as well as a proper voice connection.

In general, the QoS is a service that prioritizes certain critical packets to reach the destination and delays the least important packets. These prioritized packets reach the destination as soon as possible. If the router is not enabled with QoS, then there is no concept of prioritizing any important packets, and all the packets pass the router through a concept called First In, First Out (FIFO). 

When a router can calculate the total data it can receive, the router can control the data traffic through queues by sending the high-priority packets first and delaying the low-priority packets.

What Are The Limitations Of QoS?

There is no miracle cure to enhance the voice quality of your VoIP business phone system. Undoubtedly, Quality of Service is a key performance indicator that can help you increase customer satisfaction and first-call resolution by improving audio quality. However, there are certain limitations you need to consider before implementing QoS:

  • Despite best-effort routing practices, QoS is a single component of a broader system spectrum. Hence, your voice packets may pass through various routers and network gateways that will lower the final QoS of audio calls.
  • VoIP service providers need to provide constant support to implement QoS for business phone solutions. There may be a few initial problems that require technical assistance or training sessions; however, in the long run, QoS will have manifold benefits.

The Final Word

There is nothing worse for businesses than poor call quality. It disappoints customers and leads to team collaboration issues. 

You need to invest in a trustworthy VoIP service provider willing to implement high Quality of Service standards to receive personalized support and the best voice quality. So make sure to discuss QoS with your service vendor to witness a tremendous increase in call quality and hence improved key bottom-line parameters.

Has implementing QoS in your VoIP phone service helped your organization? If yes, do let us know more in the comments section below. We would love to learn from your experience.



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