The two-way transmission of voice over a packet-switched IP network, which is part of the TCP/IP protocol suite. The terms "IP telephony" and "voice over IP" (VoIP) are synonymous. However, the ...

The codes and commands used to establish and terminate a phone call over an IP network. The protocol supports ... The primary IP telephony signaling protocols are H.323, SIP and MGCP/MEGACO.

The Company offers its services using an all-IP network, which enables the Company ... cable and broadband telephony companies. The Company's voice services in the United S ...