An ATA is a simple device which lets you connect any standard telephone
or fax machine so it can use VoIP through your Internet connection. The
ATA converts the analog signal from your telephone into digital data
that can be transmitted over the Internet. ATAs are suitable for basic
use but may not be compatible with all features. If you wish to take
full advantage of Jive’s powerful Business VoIP feature set, your best
option is a true IP phone.