The 7 Best VOIP Adapters of 2018

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Best Buy VOIP Adapter
Best Google Voice VOIP Adapter
Best Affordable VOIP Adapter

Even though VOIP phone adapters are such simple devices, they play a crucial role in enabling you to take advantage of a VOIP service. This device is capable of converting analog voice signals into digital IP packets that are then transported over an IP network. An FXS port is an interface that makes the connection from a POTS line to an adapter. By using an RJ45 port and an Ethernet cable, VOIP adapters can connect to the Local Area Network. You might also be interested in our articles about the best cell phone signal boosters and the best walkie talkies.

VOIP adapters act like bridges between an IP network and a desktop telephone which is the analog station device. There are three types of VOIP phone adapters that are worth discussing: single FXS, dual FXS, and FXO/FXS. The first can connect to one telephone and usually has one or two Ethernet ports. The dual FXS model allows you to connect a maximum of two telephones and an FXO/FXS adapter enables you to connect just a single telephone with a single POTS line.

There are some considerations before you purchase a VOIP adapter so if you are interested in one, take a look at this small buying guide:

1. The number of telephones

This number determines how many FXS ports you will require. If you only want to connect one telephone, a VOIP adapter with a single FXS port should suffice.

2. The router

A VOIP adapter has to connect to your network to be able to send and receive VOIP calls. If your home lacks a router or if the one you own only has a single Ethernet connection you have to buy an adapter with dual Ethernet ports. If your home router has plenty of available ports or you’ve got a workstation that has multiple Ethernet drops, then a single Ethernet port is enough.

3. Keeping the POTS line

In case you decide to keep the POTS line, just in case your network connection goes down, then an ATA with an FXO port is required. If you want to connect two or more POTS lines, an FXO gateway is recommended.

4. Protocols and codecs

Your other systems have to be checked to make sure that they will support the correct VOIP protocols and codecs. Look over at their manufacturer’s websites and then simply ensure that your chosen adapter supports them. The most appreciated products for their cost-effectiveness and overall quality and reliability can be discovered in the following section. They have been carefully researched and analyzed to help you make an informed decision and to never again have to deal with disappointing items that aren’t worth the money.

Best Buy VOIP Adapter

1. Ooma Telo Free Home Phone Service

Getting clear nationwide calling for free is possible with the help of this capable VOIP adapter from Ooma called Telo. Simply connect the device to your network and go through the online activation. Included with the basic calling service is the PureVoice HD technology, integration with Amazon Echo and the smart assistant Alexa, as well as one-touch voicemail audio playback.

One of the best features of this model is the PureVoice HD technology which promises fewer dropped calls and better voice quality. It certainly seems to increase the fidelity of your phone calls as the voice sounds more natural. Packet loss causes stutters during phone calls and to solve that problem Ooma’s Adaptive Redundancy is a smart technology that’s capable of detecting packet loss and sending redundant packets automatically to maintain a good sound quality.

The Ooma Mobile App is pretty intuitive and is designed to make free US calls from a smartphone using the Ooma phone number on Wi-Fi or 3G/4G. It’s compatible with both iOS and Android mobile devices and it has the ability to upload contacts directly to the Ooma address book, listen to voicemail, and modify various settings.

If you have the Amazon Echo device with Alexa you can make calls or check voicemails through Ooma’s cloud platform. This VoIP adapter has been designed with an advanced voice compression algorithm to reduce as much as possible excessive bandwidth consumption that can happen with standard VOIP technology. This model is capable of prioritization of the voice packets to enjoy clear calls even if you stream online video so the network isn’t slowed down.

Ooma Telo has great potential to create a smarter home and a more enjoyable calling experience for anyone. Considering the voice quality and the overall reliability, this adapter gives you exactly what you need and allows you to make some great savings. The fact that it integrates with Amazon Echo and other smart products means that you can transform your living space into a more convenient one.

Key Features:

  • Free nationwide calling and low international rates
  • PureVoice HD
  • Ooma Mobile HD app
  • Easy install
  • One-touch voicemail audio playback
  • Home security for one sensor
  • Remote voicemail retrieval and online playback

Best Google Voice VOIP Adapter

2. Obihai OBi202 2-Port VoIP Phone Adapter

The Obihai OBi202 is a solid option for a VOIP phone adapter because it’s packed with lots of powerful features to improve your calling experience. It’s easy to set-up, it works with Google Voice and supports up to four VOIP services across two phone ports. The price is reasonable for what it offers so this is definitely an option worth checking out.

This little device allows you to make international calls at very low rates to approximately 150 destinations. Without any connection fee, you can enjoy rates to India, Mexico, and China as low as 1 cent per minute.

If you are tired of annoying telemarketer calls, you can easily block them with this unit. Another interesting feature is when someone calls it can ring more than a single OBi device anywhere.

Setting up the device can be done in a few simple steps. First, connect the adapter to the Wi-Fi router. After that, connect your home phone and go over the Internet and log-in or sign-up to the manufacturer’s website. There are a few extras if you choose to upgrade your subscription and they seem pretty good taking into account the relatively low cost. There’s voice command for calling people in your Google Contacts by saying their name, call blocking and blacklist management, caller ID for Google Contacts and many more.

Considering the support for many VOIP providers, the superb convenience and comfort offered over your home phone, the Obihai OBi202 represents the next level for anyone who needs a capable VOIP adapter. It has so many features, the voice quality is decent and if you pair it with Google Voice it’s absolutely free. Compared to many alternatives, this is an affordable and efficient VOIP phone adapter that does what it’s supposed to.

Key Features:

  • Easy to Set-Up
  • Works with Google Voice
  • Supports T.38 Fax and SIP
  • 1x USB for Obihai Accessories
  • Designed, developed and supported in the USA

3. MagicJack Go 2017 Version Digital Phone Service

One of the best on-the-go digital phone services suitable for home and business environments is the MagicJack Go 2017 which allows you to make unlimited local and long distance calls anywhere in the U.S. and Canada. Simplicity is key for this device and the price is one of the lowest you can find. Let’s see how capable is this little gadget.

If you are traveling internationally, you can take this unit with you to make calls to the US and Canada from wherever you are. You can also call outbound worldwide and enjoy some of the lowest international rates.

The companion app for your smartphone is absolutely essential as it allows you to make and receive calls on-the-go. Simply assign your magicJack device number to the app. It’s available for both iOS and Android devices.

Some of the notable features of this adapter are the Caller ID and Voicemail and the free magicJack-to-magicJack calling. As part of the installation process, you will need to use a software on your computer. In terms of call quality, there are no complaints and you will definitely not regret the monthly savings if you decide to make the switch from your standard phone service.

Paired with a high-speed internet connection, the MagicJack GO will revolutionize the way you make calls from home and can save you a considerable amount of money. Due to the fact that it only takes around five minutes to set-up the device, this adapter can be considered a solid competitor on the market and when you take into account the free smartphone app that’s very intuitive, you can’t go wrong with this unit.

Key Features:

  • Free calling to the U.S. and Canada and magicJack-to-magicJack calls worldwide
  • Free Caller ID, Voicemail, Call Forwarding and Waiting and Conference
  • Low international outbound calling rates
  • Portable

4. Obihai OBi200 1-Port VoIP Phone Adapter

The OBi200 VOIP phone adapter from Obihai has the power to transform the way you make and receive phone calls as it supports plenty of VOIP services for a very small cost or even for free. Local, long distance or international calling – they are all possible with the help of this powerful little gadget. It works with Google Voice and can save you a great amount of money in the long run.

Some of the VOIP services supported by this model are Anveo, VoIPms, Google Voice, PhonePower and lots of ‘Bring Your Own Device’ Internet phone services. Obtaining the lowest local and international cost for your calls is easy and you have a good selection of service providers to choose from. Calls to other OBi devices are free thanks to the OBiTALK network.

In terms of functionality, this VOIP adapter includes lots of useful abilities when paired with Google Voice such as caller ID, call forwarding, 3-way calls, faxing, and call waiting. There is also the possibility to block anonymous calls and to receive missed call notifications via email and to get voicemail notifications through text or email.

Setting up this model is easy, the process is basically as straightforward as the one on the OBi202. You get some of the best voice clarity on the market and you can save a lot of money even if you choose some of the premium subscriptions like the OBiEXTRA features. Just to name a few, you can get home alarm monitoring as the device works well with your alarm system and receives notifications. There is also OBi Voice Command that’s used to call any business by simply saying its name. Premium support is included in the extra package as you gain access to the extensive network of Obihai’s technical support experts.

If you’re tired of expensive phone calls and want to make a solid change, a VOIP phone adapter like the Obihai OBi200 is the perfect solution. It’s pretty clear by now that this device has many capabilities but the most interesting thing about it is the price which is actually very fair considering what you get in exchange.

Key Features:

  • Easy to Set-Up
  • T.38 Fax and SIP
  • Works with Google Voice
  • 1x USB for Obihai Accessories
  • Caller ID, forwarding and waiting

Best Affordable VOIP Adapter

5. Vonage Home Phone Service with 1 Month Free HT802-VD VoIP Device

The least expensive solution for transforming the way you’re making calls at home is by far the Vonage HT802-VD which provides unlimited and crystal clear calling over a strong internet connection to and from anywhere in the U.S. or Canada. This represents some excellent value when you also factor in the reduced cost of the device.

With this VoIP adapter, you will need a Vonage subscription though 3 months of service are already included. This little gadget allows you to use your home broadband internet network when making and receiving calls. It can be paired with the Vonage Extensions app to use these features on-the-go just with your smartphone. The last feature worth talking about is the selective block function that lets you put an end to unwanted calls with a simple touch.

One of the most interesting features of this model is called SimulRing and it lets you forward calls to a maximum of five additional phones simultaneously, smartphones included. Missing critical calls can be considered a thing of the past if you have such a reliable feature.

The Voicemail Plus from Vonage offers you the ability to access important voicemail from any phone or it sends them to you via email. Thanks to the call transfer option, you can transfer any call to any number in the US, Canada, or Puerto Rico. This is possible even if you are already engaged in another call.

With a nice and clear voice quality, a simple set-up and considering how it has the potential to save you a lot of money compared to a regular phone service, the Vonage HT802-VD is a flawless piece of equipment. Performance is not always as reliable as some of its more expensive competitors, but all in all, this is a solid VOIP phone adapter for the money.

Key Features:

  • Unlimited nationwide calling including Canada and Mexico
  • Vonage extensions app
  • Transcribed voicemails can be received via text or email
  • Home Phone number can be kept for free
  • Call Forwarding
  • Caller ID

6. magicJack EXPRESS Digital Phone Service

The MagicJack Express allows you, through a simple set-up, to start making unlimited calls to the US and Canada for a fraction of the cost of a normal phone service. Even though it uses the power of the Internet for making calls, it keeps all the benefits from a regular phone service including Free Call Forwarding, Free Caller ID, Free Call waiting, and Free Voice Mail.

There are three months of service included in the package with the adapter. You can start a new number either for personal or for business use. The rates for outbound calling from the US or Canada are quite low but the real savings are on international calls. The voice quality is decent, nothing that really stands out but it’s certainly an improvement over a standard phone service.

MagicJack provides a solid companion app called magicApp which enables you to take advantage of the same great abilities of this device even when you aren’t at home. It’s free to download and it lets you make unlimited local and long distance calls to the United States and Canada from a smartphone. All you need to do is to assign your magicJack device number to the app and then you can easily get your home, business, and mobile phone ring at the same time.

Other great features that you can discover in this unit is the caller ID, voicemail, call waiting and forwarding, as well as free 411 and free magicJack-t-magicJack calling. This model is also very portable to take overseas during travels.

Up and working in less than 5 minutes and boasting a crystal clear voice quality, the MagicJack Express is a serious candidate that anyone who wishes to buy a great VOIP phone adapter should consider. It’s also worth mentioning the great technical support provided by MagicJack in the account webpage as they have live technicians usually answering questions rapidly if you have any issues. An excellent buy overall.

Key Features:

  • No Monthly Bills
  • Simple Set Up
  • 3 months of service included
  • Unlimited local & long distance calls for less than $3/month
  • Available for calls in the US and Canada

7. Grandstream GS-HT701 Handytone 701 ATA Analog Telephone Adapter

Packaged in an ultra-compact design and providing superb voice quality, as well as advanced VOIP functionality, the Grandstream HT701 is the ideal single-port ATA for personal use but it can also be very useful for large scale commercial IP voice deployments. The cost is relatively low so this is definitely an interesting option.

This model is a 1-port analog telephone adapter excellent for both residential and office environments. The size of the unit is adequate for transporting if necessary as Grandstream designed it to be very compact.

Some of the advanced telephony features that must be mentioned are call waiting and caller ID. The device supports up to 1 SIP account and has 1 FXS analog telephone port and one 10/00 Mbps port. The FXS port is capable of powering up to five phones so it fits well in most homes. You can also check out the status of power, internet, and LINK/ACT or phone with the help of the LED lights on the front panel. It can allow 3-way voice conferences and supports multi-language voice prompts.

One aspect that received a lot of consideration is the security as this model uses some of the strongest security protection and it keeps your privacy safe using TLS/SRTP/HTTPS. The provisioning is secure and automated through TR069 and HTTP/HTTPS/TFTP. There is also a ”Do Not Disturb” function integrated and support for lots of voice codecs, including G.711 and G.726.

Providing unrivaled affordability and taking into account its rich functions and the easy manageability, the Grandstream HT701 is perfect for home applications. The written instructions are very clear and so the set-up process is fairly straightforward and frustration free. Making the transition from hardwired to VOIP more convenient, this ATA device is highly recommended.

Key Features:

  • Single FXS telephone port
  • Single 10/100M Ethernet port
  • TLS/SRTP/HTTPS security
  • TR069 automatic provisioning
  • Support for comprehensive voice codecs