A Voipswitch or softswitch is a very important device element of any
telecommunications network. It connects different IP networks in order to
deliver end-to-end communications
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.