(IPT, Internet Telephony) Use of IP data connections to exchange voice and fax data that have traditionally been carried over the public switched telephone network.
During the late 1990s, an increasing number of telephone calls have been routed over the Internet. Calls made in this way avoid PSTN charges. Unlike traditional telephony, IP telephony is relatively unregulated.
Companies providing these services are known as Internet Telephony Service Providers (ITSPs). They include telephone companies, cable TV companies and Internet Service Providers (ISPs).
There are still many problems with voice quality, latency, compression algorithms, and quality of service.
Voice over IP is an organised effort to standardise IP telephony.
See also Computer Telephone Integration.
Internet Telephony Overview (http://fokus.gmd.de/research/cc/glone/projects/ipt/).
[ih-rid-ik, ahy-rid-] /ɪˈrɪd ɪk, aɪˈrɪd-/ adjective, Chemistry. 1. of or containing iridium, especially in the tetravalent state. /aɪˈrɪdɪk; ɪˈrɪd-/ adjective 1. of or containing iridium, esp in the tetravalent state 2. of or relating to the iris of the eye iridic i·rid·ic (ĭ-rĭd’ĭk, ī-rĭd’-) adj. Of or relating to the iris.
[ih-rid-ee-uh m, ahy-rid-] /ɪˈrɪd i əm, aɪˈrɪd-/ noun, Chemistry. 1. a precious metallic element resembling platinum: used in platinum alloys and for the points of gold pens. Symbol: Ir; atomic weight: 192.2; atomic number: 77; specific gravity: 22.4 at 20°C. /aɪˈrɪdɪəm; ɪˈrɪd-/ noun 1. a very hard inert yellowish-white transition element that is the most […]
iridesis i·rid·e·sis (ĭ-rĭd’ĭ-sĭs, ī’rĭ-dē’sĭs) n. Ligature of a portion of the iris brought out through an incision in the cornea. Also called iridodesis.