An analog telephone adapter (ATA) provides an interface that allows you to use a standard telephone to communicate over an IP network such as the Internet. This includes providing dial tone, understanding touch tones, authenticating to the VoIP provider, encoding your voice in a way that allows it to be transmitted over an IP network, decoding IP packets into voice, and etc.
ATA's are primary used for Overhead paging, Analog/Cordless phones, and Door opener control units.
We do NOT use ATA's for Alarm systems, Emergency Elevator phones, faxing, or high volume data processing such as credit card units. The reason is the packets are different from fax and touch tones. The gaps in packets works great in voice, but the older technologies do not appreciate it. They consider it rude or confusing and hang up.
We provide consultation on which ATA's and paging systems we sell and support. The cordless phone you can pick up at any retail store. If it works on a “landline” it will work on an ATA. Call Customer Service for help.