VoIP
From TBwiki
Voice over Internet Protocol (VoIP) is a means of transmitting voice calls over a packet-based transmission network. It used SIP or H.323 as a signaling protocol.
TelcoBridges and VoIP
TelcoBridges' Tmedia and Tdev families of products support VoIP via the SIP signaling protocol as well as via dedicated on-board hardware.