Why audio over IP? Why not stick with ISDN or GSM?
With the growth of the Internet, service providers are slowly discontinuing ISDN. This is also the case with GSM. In addition to IP’s widespread availability, IP connections do not have multi-week lead times, costly set-up and per-minute charges. The Zephyr/IP uses exclusive technology to overcome the complications with public-IP audio transmission and is optimized for real-world conditions.
