It is a method of communication based on text messaging between two fax machines, the first one calling to other one to send a fax, the recipient receives a text on A4 paper and after that communication process ends.
Cisco SPA112 is a dual-port voice adapter, which provides high quality VoIP services with wide set of features through a broadband Internet connection. It is easy to install and use, it works on an IP network connecting fax machines and analog phones to VoIP service providers and provides support for any additional LAN connections.