Can VoIP Phones Work Over WiFi

Can Voip phones work over WiFi

Last Updated on April 22, 2022 by Markeyus Franks

A VoIP phone can work over WIFi when the wireless router or access point is in a good range of the phone. Typically VoIP phones over WiFi will do pretty well unless there are other factors causing interference.

Originally, VOIP phones did not work over WIFI, but in recent years many VOIP phones have been configured to support a WIFI connection.
Many newer phones come with a USB input that can receive a WIFI USB Adapter. This wifi adapter connects wireless to your router. So instead of using a cat 5 cable to access the internet, your phone will connect to your router by using the added USB adapter.

What’s the advantage of using a WIFI VOIP phone?


There are huge advantages to using a WIFI phone over the traditional wireline method. With using WIFI you have a great advantage as
far as flexibility. With WIFI you can basically place your phone anywhere within range of the router or access point as opposed to being restricted to a desk because of the data cable. It’s also a great cost advantage. With a wireline phone, there are usually more components that came with the setup.

Typically, there will be a network switch, patch panel, and wire drops, and depending on the size of the business initial money can add up quickly. A large corporation can easily rack up thousands of dollars with a VOIP installation. Now on the other end with WIFI phones, you don’t need a network switch, you won’t have to install a patch panel, and you won’t have to drop cables in different locations. The only items that you will need for setup are a router and a few access points depending on the size of the corporation. This can save businesses loads of money in the short and long run.

WiFi phones can be a great advantage for people who work from home as well. If you use a traditional VOIP phone at home, chances are you will have to stay close to your router because that’s where the Ethernet slots are located. This will make your work location more restricted because you have to stay near the router at all times. Now the question that comes up is, can’t I just use a wireless headset in the house. Well, yes you can, but a headset is just a headset. You can’t see a caller, transfer a call, or see BLF statuses with a headset. Now with a WiFi VOIP phone, you can position it anywhere in your house that receives a good WiFi signal. This is great if your office is far away from the router. With the times we are living in many people are working from home, so we expect to see an increase in home VOIP phones.


Why is Wi-Fi bad for VoIP? ( Common Disadvantages )

Although few, there are disadvantages of using WiFi VOIP phones. One common disadvantage that is overlooked is EMI (Electromagnetic interference). EMI happens when device noise causes interference between two antennas. This causes breaks and losses between data transfers.
Below are a few products that can cause EMI:

  • Doorbell transmitters,
  • Vacuum cleaners
  • Ac units
  • Pencil sharpeners
  • Power lines


If you are experiencing choppy voice or if your phone is not working, then try turning off other devices or changing the phone to a new location.

Many newer appliances come with EMI shielding which protects the device from getting caught in an EMI crossfire, but sometimes you still may experience a little interference

WIFI RANGE: Another issue with using WiFi VOIP phones is range issues. Everyone knows that WiFi signals can be diminished quite harshly when multiple walls are involved. If you have a medium to large size house, then you could very well fall victim to range issues. If your phone is out of range, it will have suffered from packet loss, jitter, or latency. This will most likely make your phone unusable. But don’t worry, this can be easily fixed if you
purchase multiple extenders for home use and access points for the workplace. Here’s a great home extender on amazon that with great reviews.

Can VOIP phones work over WiFi in a work environment


This is a good question because in a work environment you have to factor in load and space, how many people will be using the WiFi, and how to space them out. Generally speaking, when you have VOIP phones included with the regular internet, you’re going to want to separate the bandwidth.

This can be Laccomplished by creating a V-LAN in your router. The V-Lan will allow a separate bandwidth flow just for the VOIP phones. This is good practice for network organization and bandwidth allocation. This also makes it easier to set up QoS ( Quality of Service). With VOIP phones you want to make sure they get the highest priority when it comes to distributing bandwidth. Therefore implementing Qos is very important in a workplace environment.

Having multiple WLANs. The great thing about installing access points is the ability to create multiple WLAN (SSID) or in other words different network names. This ensures that other WiFi users are not connecting to the same network as your phones. For example, anybody who wants to connect their computer to the WiFi can use a network name called General office; whereas if anyone wants to Connect their WiFi phone to the network then they would use a different name called Phones. With access points, there is some QOS as well. You can limit the bandwidth of specific WLANs giving more network priority to the other.

Recommended Access points

Here are a few good access points on the market

  1. Ubiquiti Networks UnFi Access Point
  2. Netgear Wireless Desktop Access Point
  3. TP-Link EAP245 V3


Types of VOIP phones that can be used with WIFI

  1. Yealink T41S- T48S (will need a USB WiFi Adapter)

2. Polycom VVX410- 610 (will need a USB attachment)

V-Tech ( This phone works similar to a cordless phone. The base is connected via wired to an ethernet slot and the rest of of the phones can be placed with in range of the base. ( Range extenders can also be used to extend range.) This V-Tech phone works great for restaurants.

How to Troubleshoot a VOIP Phone over WIFI

If you find yourself having issues with your VOIP phones such as choppy voice, voice going in and out, one-way audio, or no audio at all. The first thing to check is to make sure you’re in a good range of the router. Many routers can go up to 160ft without any obstruction in the way. If you think the phone is out of range, then move it to another location and try again. If you can’t move the phone to a different location and are sure its a range issue, then you can invest in a simple repeater or mesh range extenders ()

The next step to troubleshooting your WIFI phone is to make sure your internet speed is up to par. Nowadays, the average internet speed that ISPs offer is around 80mbps. That’s more than enough to run a few VOIP phones, but what happens when you

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