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Express Logic develops, markets and supports the ThreadX® real-time operating system (RTOS), NetXTCP/IP networking stack, USBX USB stack, FileX® embedded file system, and PEGX GUI toolkit for embedded applications.
ThreadX is a royalty-free, full source code, small-footprint, low-overhead RTOS that is extremely easy to learn and use. ThreadX is one of the most widely deployed RTOS products in the world, with over 1.25 billion products based on ThreadX.
Definition: Voice-over-Internet protocol is a protocol optimized for the transmission of voice through the Internet or other packet-switched networks.
VoIP is often used abstractly to refer to the actual transmission of voice (rather than the protocol implementing it). This latter concept is also referred to as IP telephony, Internet telephony, voice over broadband, broadband telephony, and broadband phone.
VoIP providers may be viewed as commercial realizations of the experimental Network Voice Protocol (1973) invented for the ARPANET providers.
Some cost savings are due to utilizing a single network to carry voice and data, especially where users have underused network capacity that can carry VoIP at no additional cost.
VoIP-to-VoIP phone calls are sometimes free, while VoIP calls connecting to public switched telephone networks (VoIP-to-PSTN) may have a cost that is borne by the VoIP user.
Source: Wikipedia (http://en.wikipedia.org/wiki/VoIP)
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