There are many VoIP providers that support BYOD (Bring Your Own Device) in which case gives the flexibility to the end-user to supply their own ATA (Analog Telephone Adapter). This is a good option for those users that are technically savvy since can result in significant savings and a good way for providers to save on costs (typically support on foreign devices is reduced and there’s no shipping or complicated return RMAs involved)
There are many in the market but here we review some of the most commonly used and preferred choices
The latest of the adapters to become a type of cult. GoneVoIP likes the OBi202 because it’s a full ATA with support to two phone lines. It supports Fax T.38 it may be configured with any SIP services available and supports the most typical codecs used in VoIP. It has two RJ-45 Ethernet and a USB port which could be used to connect a Wi-Fi adapter. The unit also has embedded QoS capability – which shall help improve maintain an optimum voice quality throughout all calls. This is the darling of the adapters for VoIP Phone providers.
This is the smaller brother of the OBi202. Supports only one telephone line though comes with the same ability to configure up to 4 VoIP service providers. Also supports Fax T-38 and may be complemented with the USB Wi-Fi card for hard-to-reach locations.
Cisco has always produced very good network equipment, in the years gone by it used to be Linksys (owned by Cisco) who had tackled the VoIP ATA market better. but here of late seems there is a switch and Cisco’s own brand is producing very good and reliable products. The SPA122 is a very economical and reliable unit, supporting all codecs, typical features plus having fax (T.38) support. It has one RJ-45 Ethernet interface and also supports two phone lines.
This Grandstream is a great unit, perhaps the most used by VoIP Phone providers that supply their own ATAs. The HT-802 supports a wide variety of codecs, includes fax support. It has 2 phone lines and 2 network ports with a network router. A neat feature is that it supports dual SIP servers if the primary SIP server fails it switchovers to the secondary without user intervention. It supports all the usual VoIP features, such as Do Not Disturb, Caller ID, 3-Way Calling, and so on.
GrandStream HT701 Single Port
This GrandStream was a great little, inexpensive yet powerful adapter unit. It had one network interface and one phone line; supporting all typical codecs and fax with the usual VoIP features. This unit was used extensively but has since then been faced out by VoIP Phone providers. You may find it in after-market stores, but it is better to pay a few bucks more and have a newer version with support for the latest features along with newer firmware.
This is the newest version of the GrandStream ATA single port. It still is a great little inexpensive yet powerful unit. It comes with one 10/100 network interface and one phone line; supporting all typical codecs and fax with the usual VoIP features. This unit is now the preferred goto by many VoIP Phone providers.
When choosing an ATA to make sure to check with the VoIP provider, as in many cases they do have a hardware compatibility list. The majority of Canada’s Best are listed at GoneVoIP and these providers do support BYOD, but since you are not sure it is better to ask and you can use these 4 ATA as a reference as being widely popular.