An internet backbone refers to one of the principal data routes. The data travels between large networks and core routers on the Internet. An Internet backbone is a high-speed data transmission line. High-speed internet service providers all around the world.
Largest companies running different parts of the Internet backbone included: -UUNET, AT&T,GTE Corp, and Sprint Nextel Corp. Routers are connected w/high-speed links & support different ranges like: -T1, T3, OC1, OC3, or OC8 The first Internet backbone was named NSFNET. Funded by U.S. Govt.& introduced by the NSF* in 1987. (*National Science Foundation)
T1: a dedicated transmission connection between service provider & client; can carry 24 voice channels for calls/digital data at a rate of 1.544Mbp/s. Developed by AT&T Bell Laboratories in the 1960's. Traditional T1 lines use copper wire, most new installs use optic fiber. In the 1970's Bell LAbs developed higher rate systems. T2:developed capable of carrying up to 6.312Mbp/s* *with required special low-capacitance cable with foam insulation.
No lines are longer than 80 characters, TYVM. Other specified properties aren't being scored automatically at this time so this is not necessarily good news...