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 details), while IP telephony often refers to ...

VoIP providers now go far beyond basic business telephony services. These are the best options on the market that combine ...

The primary IP telephony signaling protocols are H.323, SIP and MGCP/MEGACO. There are also proprietary protocols; for example, Cisco's Skinny is widely used. See IP telephony. THIS DEFINITION IS ...

Commissions do not affect our editors' opinions or evaluations. Voice-over-internet-protocol (VoIP) telephony is a more cost-effective alternative to landline phone systems due to its low monthly ...

Avaya also plans to incorporate support for Session Initiation Protocol (SIP), an emerging call control standard, into its Communication Manager IP telephony system software, Griffin said.

NTL Business has joined forces with Mitel and VAR Bailey Teswaine to provide corporate IP telephony. The vendor is also considering a future channel strategy of its own if the initiative is successful ...