The protocol supports such features as conference calling, call waiting and call transfer. The primary IP telephony signaling protocols are H.323, SIP and MGCP/MEGACO. There are also proprietary ...

which is part of the TCP/IP protocol suite. The terms "IP telephony" and "voice over IP" (VoIP) are synonymous. However, the term VoIP is widely used for the actual services offered (see VoIP for ...

VoIP and IP telephony allows PC users to make phone calls over the Internet or other packet networks via gateways and standard telephones. VoIP is an abbreviation for voice over Internet protocol.

There's a lot to consider when you're choosing a business phone system for your small business. This guide covers everything to look for in a business phone system. These top business phone system ...