The function allows you choosing a number that you want in order to
light up during the call to traditional telephones. You can also unlist the
number and it won’t light up.
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.